summaryrefslogtreecommitdiff
path: root/drivers/base/power/opp (follow)
Commit message (Collapse)AuthorAge
* Merge android-4.4.103 (9fbf3d7) into msm-4.4Srinivasarao P2018-01-02
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * refs/heads/tmp-9fbf3d7 Linux 4.4.103 Revert "sctp: do not peel off an assoc from one netns to another one" xen: xenbus driver must not accept invalid transaction ids s390/kbuild: enable modversions for symbols exported from asm ASoC: wm_adsp: Don't overrun firmware file buffer when reading region data btrfs: return the actual error value from from btrfs_uuid_tree_iterate ASoC: rsnd: don't double free kctrl netfilter: nf_tables: fix oob access netfilter: nft_queue: use raw_smp_processor_id() spi: SPI_FSL_DSPI should depend on HAS_DMA staging: iio: cdc: fix improper return value iio: light: fix improper return value mac80211: Suppress NEW_PEER_CANDIDATE event if no room mac80211: Remove invalid flag operations in mesh TSF synchronization drm: Apply range restriction after color adjustment when allocation ALSA: hda - Apply ALC269_FIXUP_NO_SHUTUP on HDA_FIXUP_ACT_PROBE ath10k: set CTS protection VDEV param only if VDEV is up ath10k: fix potential memory leak in ath10k_wmi_tlv_op_pull_fw_stats() ath10k: ignore configuring the incorrect board_id ath10k: fix incorrect txpower set by P2P_DEVICE interface drm/armada: Fix compile fail net: 3com: typhoon: typhoon_init_one: fix incorrect return values net: 3com: typhoon: typhoon_init_one: make return values more specific net: Allow IP_MULTICAST_IF to set index to L3 slave dmaengine: zx: set DMA_CYCLIC cap_mask bit PCI: Apply _HPX settings only to relevant devices RDS: RDMA: return appropriate error on rdma map failures e1000e: Separate signaling for link check/link up e1000e: Fix return value test e1000e: Fix error path in link detection PM / OPP: Add missing of_node_put(np) net/9p: Switch to wait_event_killable() fscrypt: lock mutex before checking for bounce page pool sched/rt: Simplify the IPI based RT balancing logic media: v4l2-ctrl: Fix flags field on Control events cx231xx-cards: fix NULL-deref on missing association descriptor media: rc: check for integer overflow media: Don't do DMA on stack for firmware upload in the AS102 driver powerpc/signal: Properly handle return value from uprobe_deny_signal() parisc: Fix validity check of pointer size argument in new CAS implementation ixgbe: Fix skb list corruption on Power systems fm10k: Use smp_rmb rather than read_barrier_depends i40evf: Use smp_rmb rather than read_barrier_depends ixgbevf: Use smp_rmb rather than read_barrier_depends igbvf: Use smp_rmb rather than read_barrier_depends igb: Use smp_rmb rather than read_barrier_depends i40e: Use smp_rmb rather than read_barrier_depends NFC: fix device-allocation error return IB/srp: Avoid that a cable pull can trigger a kernel crash IB/srpt: Do not accept invalid initiator port names libnvdimm, namespace: make 'resource' attribute only readable by root libnvdimm, namespace: fix label initialization to use valid seq numbers clk: ti: dra7-atl-clock: fix child-node lookups clk: ti: dra7-atl-clock: Fix of_node reference counting SUNRPC: Fix tracepoint storage issues with svc_recv and svc_rqst_status KVM: SVM: obey guest PAT KVM: nVMX: set IDTR and GDTR limits when loading L1 host state target: Fix QUEUE_FULL + SCSI task attribute handling iscsi-target: Fix non-immediate TMR reference leak fs/9p: Compare qid.path in v9fs_test_inode fix a page leak in vhost_scsi_iov_to_sgl() error recovery ALSA: hda/realtek - Fix ALC700 family no sound issue ALSA: timer: Remove kernel warning at compat ioctl error paths ALSA: usb-audio: Add sanity checks in v2 clock parsers ALSA: usb-audio: Fix potential out-of-bound access at parsing SU ALSA: usb-audio: Add sanity checks to FE parser ALSA: pcm: update tstamp only if audio_tstamp changed ext4: fix interaction between i_size, fallocate, and delalloc after a crash ata: fixes kernel crash while tracing ata_eh_link_autopsy event rtlwifi: fix uninitialized rtlhal->last_suspend_sec time rtlwifi: rtl8192ee: Fix memory leak when loading firmware nfsd: deal with revoked delegations appropriately nfs: Fix ugly referral attributes NFS: Fix typo in nomigration mount option isofs: fix timestamps beyond 2027 bcache: check ca->alloc_thread initialized before wake up it eCryptfs: use after free in ecryptfs_release_messaging() nilfs2: fix race condition that causes file system corruption autofs: don't fail mount for transient error MIPS: BCM47XX: Fix LED inversion for WRT54GSv1 MIPS: Fix an n32 core file generation regset support regression dm: fix race between dm_get_from_kobject() and __dm_destroy() dm bufio: fix integer overflow when limiting maximum cache size ALSA: hda: Add Raven PCI ID MIPS: ralink: Fix typo in mt7628 pinmux function MIPS: ralink: Fix MT7628 pinmux ARM: 8721/1: mm: dump: check hardware RO bit for LPAE ARM: 8722/1: mm: make STRICT_KERNEL_RWX effective for LPAE x86/decoder: Add new TEST instruction pattern lib/mpi: call cond_resched() from mpi_powm() loop sched: Make resched_cpu() unconditional vsock: use new wait API for vsock_stream_sendmsg() AF_VSOCK: Shrink the area influenced by prepare_to_wait ipv6: only call ip6_route_dev_notify() once for NETDEV_UNREGISTER s390/disassembler: increase show_code buffer size s390/disassembler: add missing end marker for e7 table s390/runtime instrumention: fix possible memory corruption s390: fix transactional execution control register handling BACKPORT: time: Clean up CLOCK_MONOTONIC_RAW time handling BACKPORT: time: Fix CLOCK_MONOTONIC_RAW sub-nanosecond accounting UPSTREAM: arm64: vdso: fix clock_getres for 4GiB-aligned res f2fs: updates on 4.15-rc1 UPSTREAM: android: binder: fix type mismatch warning Linux 4.4.102 mm, hwpoison: fixup "mm: check the return value of lookup_page_ext for all call sites" Conflicts: fs/ext4/crypto_key.c mm/debug-pagealloc.c Change-Id: Ibe35d78bd0397f3ff2049e0a1dda20fcb06f2f75 Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
| * PM / OPP: Add missing of_node_put(np)Tobias Jordan2017-11-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 7978db344719dab1e56d05e6fc04aaaddcde0a5e upstream. The for_each_available_child_of_node() loop in _of_add_opp_table_v2() doesn't drop the reference to "np" on errors. Fix that. Fixes: 274659029c9d (PM / OPP: Add support to parse "operating-points-v2" bindings) Signed-off-by: Tobias Jordan <Tobias.Jordan@elektrobit.com> [ VK: Improved commit log. ] Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * PM / OPP: Initialize u_volt_min/max to a valid valueViresh Kumar2016-05-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit c88c395f4a6485f23f81e385c79945d68bcd5c5d upstream. We kept u_volt_min/max initialized to 0, when only the target voltage is present in DT, instead of the target/min/max triplet. This didn't go well with the regulator framework, as on few calls the min voltage was set to target and max was set to 0 and so resulted in a kernel crash like below: kernel BUG at ../drivers/regulator/core.c:216! [<c0684af4>] (regulator_check_voltage) from [<c06857ac>] (regulator_set_voltage_unlocked+0x58/0x230) [<c06857ac>] (regulator_set_voltage_unlocked) from [<c06859ac>] (regulator_set_voltage+0x28/0x54) [<c06859ac>] (regulator_set_voltage) from [<c0775b28>] (_set_opp_voltage+0x30/0x98) [<c0775b28>] (_set_opp_voltage) from [<c0776630>] (dev_pm_opp_set_rate+0xf0/0x28c) [<c0776630>] (dev_pm_opp_set_rate) from [<c096f784>] (__cpufreq_driver_target+0x184/0x2b4) [<c096f784>] (__cpufreq_driver_target) from [<c0973760>] (dbs_check_cpu+0x1b0/0x1f4) [<c0973760>] (dbs_check_cpu) from [<c0973f30>] (cpufreq_governor_dbs+0x324/0x5c4) [<c0973f30>] (cpufreq_governor_dbs) from [<c0970958>] (__cpufreq_governor+0xe4/0x1ec) [<c0970958>] (__cpufreq_governor) from [<c09711e0>] (cpufreq_init_policy+0x64/0x8c) [<c09711e0>] (cpufreq_init_policy) from [<c09718cc>] (cpufreq_online+0x2fc/0x708) [<c09718cc>] (cpufreq_online) from [<c0765ff0>] (subsys_interface_register+0x94/0xd8) [<c0765ff0>] (subsys_interface_register) from [<c0970530>] (cpufreq_register_driver+0x14c/0x19c) [<c0970530>] (cpufreq_register_driver) from [<c09746dc>] (dt_cpufreq_probe+0x70/0xec) [<c09746dc>] (dt_cpufreq_probe) from [<c076907c>] (platform_drv_probe+0x4c/0xb0) [<c076907c>] (platform_drv_probe) from [<c07678e0>] (driver_probe_device+0x214/0x2c0) [<c07678e0>] (driver_probe_device) from [<c0767a18>] (__driver_attach+0x8c/0x90) [<c0767a18>] (__driver_attach) from [<c0765c2c>] (bus_for_each_dev+0x68/0x9c) [<c0765c2c>] (bus_for_each_dev) from [<c0766d78>] (bus_add_driver+0x1a0/0x218) [<c0766d78>] (bus_add_driver) from [<c076810c>] (driver_register+0x78/0xf8) [<c076810c>] (driver_register) from [<c0301d74>] (do_one_initcall+0x90/0x1d8) [<c0301d74>] (do_one_initcall) from [<c1100e14>] (kernel_init_freeable+0x15c/0x1fc) [<c1100e14>] (kernel_init_freeable) from [<c0b27a0c>] (kernel_init+0x8/0xf0) [<c0b27a0c>] (kernel_init) from [<c0307d78>] (ret_from_fork+0x14/0x3c) Code: e1550004 baffffeb e3a00000 e8bd8070 (e7f001f2) Fix that by initializing u_volt_min/max to the target voltage in such cases. Reported-and-tested-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Fixes: 274659029c9d (PM / OPP: Add support to parse "operating-points-v2" bindings) Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | PM / OPP: Rename structures for clarityViresh Kumar2016-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Stephen pointed out recently, that few structures always confuse him as they aren't named properly. And this patch tries to address that: Names are updated as: - device_opp or dev_opp -> opp_table - dev_opp_list -> opp_tables - dev_opp_list_lock -> opp_table_lock - device_list_opp -> opp_device (it was never a list, but a structure) - list_dev -> opp_dev - And similar changes in comments and function names as well. This also fixes checkpatch warnings that were generated with this patch. No functional changes. Suggested-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> (cherry picked from commit 2c2709dc6921c5d246b686521f932c73a20f428f) Signed-off-by: Alex Shi <alex.shi@linaro.org>
* | PM / OPP: Fix incorrect commentsViresh Kumar2016-04-08
| | | | | | | | | | | | | | | | | | | | | | Some comments were just copy/pasted from other sections and don't match to the routines they were added for. Fix them. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> (cherry picked from commit a5da64477ee79efa748df256928ec8840a2a7986) Signed-off-by: Alex Shi <alex.shi@linaro.org>
* | PM / OPP: Initialize regulator pointer to an error valueViresh Kumar2016-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We are currently required to do two checks for regulator pointer: IS_ERR() and IS_NULL(). And multiple instances are reported, about both of these not being used consistently and so resulting in crashes. Fix that by initializing regulator pointer with an error value and checking it only against an error. This makes code more consistent and more efficient. Fixes: 7d34d56ef334 (PM / OPP: Disable OPPs that aren't supported by the regulator) Reported-and-tested-by: Jon Hunter <jonathanh@nvidia.com> Reported-and-tested-by: Tony Lindgren <tony@atomide.com> Reported-and-tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> [ rjw: Initialize to -ENXIO ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> (cherry picked from commit 0c717d0f9cb46259dce5272705adce64a2d646d9) Signed-off-by: Alex Shi <alex.shi@linaro.org>
* | PM / OPP: Initialize u_volt_min/max to a valid valueViresh Kumar2016-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We kept u_volt_min/max initialized to 0, when only the target voltage is present in DT, instead of the target/min/max triplet. This didn't go well with the regulator framework, as on few calls the min voltage was set to target and max was set to 0 and so resulted in a kernel crash like below: kernel BUG at ../drivers/regulator/core.c:216! [<c0684af4>] (regulator_check_voltage) from [<c06857ac>] (regulator_set_voltage_unlocked+0x58/0x230) [<c06857ac>] (regulator_set_voltage_unlocked) from [<c06859ac>] (regulator_set_voltage+0x28/0x54) [<c06859ac>] (regulator_set_voltage) from [<c0775b28>] (_set_opp_voltage+0x30/0x98) [<c0775b28>] (_set_opp_voltage) from [<c0776630>] (dev_pm_opp_set_rate+0xf0/0x28c) [<c0776630>] (dev_pm_opp_set_rate) from [<c096f784>] (__cpufreq_driver_target+0x184/0x2b4) [<c096f784>] (__cpufreq_driver_target) from [<c0973760>] (dbs_check_cpu+0x1b0/0x1f4) [<c0973760>] (dbs_check_cpu) from [<c0973f30>] (cpufreq_governor_dbs+0x324/0x5c4) [<c0973f30>] (cpufreq_governor_dbs) from [<c0970958>] (__cpufreq_governor+0xe4/0x1ec) [<c0970958>] (__cpufreq_governor) from [<c09711e0>] (cpufreq_init_policy+0x64/0x8c) [<c09711e0>] (cpufreq_init_policy) from [<c09718cc>] (cpufreq_online+0x2fc/0x708) [<c09718cc>] (cpufreq_online) from [<c0765ff0>] (subsys_interface_register+0x94/0xd8) [<c0765ff0>] (subsys_interface_register) from [<c0970530>] (cpufreq_register_driver+0x14c/0x19c) [<c0970530>] (cpufreq_register_driver) from [<c09746dc>] (dt_cpufreq_probe+0x70/0xec) [<c09746dc>] (dt_cpufreq_probe) from [<c076907c>] (platform_drv_probe+0x4c/0xb0) [<c076907c>] (platform_drv_probe) from [<c07678e0>] (driver_probe_device+0x214/0x2c0) [<c07678e0>] (driver_probe_device) from [<c0767a18>] (__driver_attach+0x8c/0x90) [<c0767a18>] (__driver_attach) from [<c0765c2c>] (bus_for_each_dev+0x68/0x9c) [<c0765c2c>] (bus_for_each_dev) from [<c0766d78>] (bus_add_driver+0x1a0/0x218) [<c0766d78>] (bus_add_driver) from [<c076810c>] (driver_register+0x78/0xf8) [<c076810c>] (driver_register) from [<c0301d74>] (do_one_initcall+0x90/0x1d8) [<c0301d74>] (do_one_initcall) from [<c1100e14>] (kernel_init_freeable+0x15c/0x1fc) [<c1100e14>] (kernel_init_freeable) from [<c0b27a0c>] (kernel_init+0x8/0xf0) [<c0b27a0c>] (kernel_init) from [<c0307d78>] (ret_from_fork+0x14/0x3c) Code: e1550004 baffffeb e3a00000 e8bd8070 (e7f001f2) Fix that by initializing u_volt_min/max to the target voltage in such cases. Reported-and-tested-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Fixes: 274659029c9d (PM / OPP: Add support to parse "operating-points-v2" bindings) Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> (cherry picked from commit c88c395f4a6485f23f81e385c79945d68bcd5c5d) Signed-off-by: Alex Shi <alex.shi@linaro.org>
* | PM / OPP: Fix NULL pointer dereference crash when disabling OPPsJon Hunter2016-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 7d34d56ef334 (PM / OPP: Disable OPPs that aren't supported by the regulator) causes a crash to happen on Tegra124 Jetson TK1 when using the DFLL clock source for the CPU. The DFLL manages the voltage itself and so there is no regulator specified for the OPPs and so we get a crash when we try to dereference the regulator pointer. Fix this by checking to see if the regulator IS_ERR_OR_NULL before dereferencing it. Fixes: 7d34d56ef334 (PM / OPP: Disable OPPs that aren't supported by the regulator) Signed-off-by: Jon Hunter <jonathanh@nvidia.com> Reported-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> [ rjw: Changelog ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> (cherry picked from commit 78ecc56247f0ec2bc0cf6f2f2af69e98d99767bc) Signed-off-by: Alex Shi <alex.shi@linaro.org>
* | PM / OPP: Add dev_pm_opp_set_rate()Viresh Kumar2016-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds a routine, dev_pm_opp_set_rate(), responsible for configuring power-supply and clock source for an OPP. The OPP is found by matching against the target_freq passed to the routine. This shall replace similar code present in most of the OPP users and help simplify them a lot. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> (cherry picked from commit 6a0712f6f199e737aa5913d28ec4bd3a25de9660) Signed-off-by: Alex Shi <alex.shi@linaro.org>
* | PM / OPP: Manage device clkViresh Kumar2016-04-08
| | | | | | | | | | | | | | | | | | | | | | OPP core has got almost everything now to manage device's OPP transitions, the only thing left is device's clk. Get that as well. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> (cherry picked from commit d54974c2513f487e9e70fbdc79c5da51c53e23da) Signed-off-by: Alex Shi <alex.shi@linaro.org>
* | PM / OPP: Parse clock-latency and voltage-tolerance for v1 bindingsViresh Kumar2016-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | V2 bindings have better support for clock-latency and voltage-tolerance and doesn't need special care. To use callbacks, like dev_pm_opp_get_max_{transition|volt}_latency(), irrespective of the bindings, the core needs to know clock-latency/voltage-tolerance for the earlier bindings. This patch reads clock-latency/voltage-tolerance from the device node, irrespective of the bindings (to keep it simple) and use them only for V1 bindings. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> (cherry picked from commit 50f8cfbd5897ca182d43f4caf19937153f17a604) Signed-off-by: Alex Shi <alex.shi@linaro.org>
* | PM / OPP: Introduce dev_pm_opp_get_max_transition_latency()Viresh Kumar2016-04-08
| | | | | | | | | | | | | | | | | | | | | | In few use cases (like: cpufreq), it is desired to get the maximum latency for changing OPPs. Add support for that. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> (cherry picked from commit 2174344765f472895c076d703c9cdc58215e1393) Signed-off-by: Alex Shi <alex.shi@linaro.org>
* | PM / OPP: Introduce dev_pm_opp_get_max_volt_latency()Viresh Kumar2016-04-08
| | | | | | | | | | | | | | | | | | | | | | In few use cases (like: cpufreq), it is desired to get the maximum voltage latency for changing OPPs. Add support for that. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> (cherry picked from commit 655c9df961751ce21466f6e97e8033932c27a675) Signed-off-by: Alex Shi <alex.shi@linaro.org>
* | PM / OPP: Disable OPPs that aren't supported by the regulatorViresh Kumar2016-04-08
| | | | | | | | | | | | | | | | | | | | | | Disable any OPPs where the connected regulator isn't able to provide the specified voltage. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> (cherry picked from commit 7d34d56ef3349cd5f29cf7aab6650f3414fa81b9) Signed-off-by: Alex Shi <alex.shi@linaro.org>
* | PM / OPP: get/put regulators from OPP coreViresh Kumar2016-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This allows the OPP core to request/free the regulator resource, attached to a device OPP. The regulator device is fetched using the name provided by the driver, while calling: dev_pm_opp_set_regulator(). This will work for both OPP-v1 and v2 bindings. This is a preliminary step for moving the OPP switching logic into the OPP core. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> (cherry picked from commit 9f8ea969d5cfdd4353d2adb004e8e2286b984369) Signed-off-by: Alex Shi <alex.shi@linaro.org>
* | PM / OPP: Use snprintf() instead of sprintf()Viresh Kumar2016-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sprintf() can access memory outside of the range of the character array, and is risky in some situations. The driver specified prop_name string can be longer than NAME_MAX here (only an attacker will do that though) and so blindly copying it into the character array of size NAME_MAX isn't safe. Instead we must use snprintf() here. Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> (cherry picked from commit 5ff24d601092b222340b28466e263b1c4559407e) Signed-off-by: Alex Shi <alex.shi@linaro.org>
* | PM / OPP: Set cpu_dev->id in cpumask firstPi-Cheng Chen2016-04-08
| | | | | | | | | | | | | | | | | | | | | | | | Set cpu_dev->id in cpumask first when setting up cpumask for CPUs that share the same OPP table. This might be helpful when handling cpumask without the original CPU bitfield set. Signed-off-by: Pi-Cheng Chen <pi-cheng.chen@linaro.org> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> (cherry picked from commit d9de19b1cc013433ad293365b5b3902ec73dfd60) Signed-off-by: Alex Shi <alex.shi@linaro.org>
* | PM / OPP: Fix parsing of opp-microvolt and opp-microamp propertiesBartlomiej Zolnierkiewicz2016-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 01fb4d3c39d3 ("PM / OPP: Parse 'opp-<prop>-<name>' bindings") broke support for parsing standard opp-microvolt and opp-microamp properties. Fix it by setting 'name' string to proper value for !prop cases. Fixes: 01fb4d3c39d3 ("PM / OPP: Parse 'opp-<prop>-<name> 'bindings") Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> (cherry picked from commit fd8d8e63467c922be9ae4452cca2980d473477d9) Signed-off-by: Alex Shi <alex.shi@linaro.org>
* | PM / OPP: Parse 'opp-<prop>-<name>' bindingsViresh Kumar2016-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | OPP bindings (for few properties) allow a platform to choose a value/range among a set of available options. The options are present as opp-<prop>-<name>, where the platform needs to supply the <name> string. The OPP properties which allow such an option are: opp-microvolt and opp-microamp. Add support to the OPP-core to parse these bindings, by introducing dev_pm_opp_{set|put}_prop_name() APIs. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Tested-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> (cherry picked from commit 01fb4d3c39d35b725441e8a9a26b3f3ad67793ed) Signed-off-by: Alex Shi <alex.shi@linaro.org>
* | PM / OPP: Parse 'opp-supported-hw' bindingViresh Kumar2016-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | OPP bindings allow a platform to enable OPPs based on the version of the hardware they are used for. Add support to the OPP-core to parse these bindings, by introducing dev_pm_opp_{set|put}_supported_hw() APIs. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Tested-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> (cherry picked from commit 7de36b0aa51a5a59e28fb2da768fa3ab07de0674) Signed-off-by: Alex Shi <alex.shi@linaro.org>
* | PM / OPP: Add missing doc commentsViresh Kumar2016-04-08
| | | | | | | | | | | | | | | | | | | | | | | | Few doc-style comments were missing, add them. Rearrange another one to match the sequence within the structure. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Pavel Machek <pavel@ucw.cz> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> (cherry picked from commit dc4e7b1fa20a840d2317fcfdaa1064fc09d2afcb) Signed-off-by: Alex Shi <alex.shi@linaro.org>
* | PM / OPP: Add debugfs supportViresh Kumar2016-04-08
|/ | | | | | | | | | | | | | | | | | | | | | This patch adds debugfs support to OPP layer to export OPPs and their properties for all the devices. This creates a top level directory: /sys/kernel/debug/opp and then device specific directories (based on device names) inside it. For example: 'cpu0', 'cpu1', etc.. If multiple devices share the OPP table, then the real directory is created only for the first device. For all others, links are created to the real directory. Inside the device specific directory, a separate directory is created for each OPP. And within that files per opp property. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> (cherry picked from commit deaa51465105a7eda19a627b10372f4f7c51a4df) Signed-off-by: Alex Shi <alex.shi@linaro.org>
* Merge tag 'pm+acpi-4.4-rc1-2' of ↵Linus Torvalds2015-11-12
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull more power management and ACPI updates from Rafael Wysocki: "The only new feature in this batch is support for the ACPI _CCA device configuration object, which it a pre-requisite for future ACPI PCI support on ARM64, but should not affect the other architectures. The rest is fixes and cleanups, mostly in cpufreq (including intel_pstate), the Operating Performace Points (OPP) framework and tools (cpupower and turbostat). Specifics: - Support for the ACPI _CCA configuration object intended to tell the OS whether or not a bus master device supports hardware managed cache coherency and a new set of functions to allow drivers to check the cache coherency support for devices in a platform firmware interface agnostic way (Suravee Suthikulpanit, Jeremy Linton). - ACPI backlight quirks for ESPRIMO Mobile M9410 and Dell XPS L421X (Aaron Lu, Hans de Goede). - Fixes for the arm_big_little and s5pv210-cpufreq cpufreq drivers (Jon Medhurst, Nicolas Pitre). - kfree()-related fixup for the recently introduced CPPC cpufreq frontend (Markus Elfring). - intel_pstate fix reducing kernel log noise on systems where P-states are managed by hardware (Prarit Bhargava). - intel_pstate maintainers information update (Srinivas Pandruvada). - cpufreq core optimization related to the handling of delayed work items used by governors (Viresh Kumar). - Locking fixes and cleanups of the Operating Performance Points (OPP) framework (Viresh Kumar). - Generic power domains framework cleanups (Lina Iyer). - cpupower tool updates (Jacob Tanenbaum, Sriram Raghunathan, Thomas Renninger). - turbostat tool updates (Len Brown)" * tag 'pm+acpi-4.4-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (32 commits) PCI: ACPI: Add support for PCI device DMA coherency PCI: OF: Move of_pci_dma_configure() to pci_dma_configure() of/pci: Fix pci_get_host_bridge_device leak device property: ACPI: Remove unused DMA APIs device property: ACPI: Make use of the new DMA Attribute APIs device property: Adding DMA Attribute APIs for Generic Devices ACPI: Adding DMA Attribute APIs for ACPI Device device property: Introducing enum dev_dma_attr ACPI: Honor ACPI _CCA attribute setting cpufreq: CPPC: Delete an unnecessary check before the function call kfree() PM / OPP: Add opp_rcu_lockdep_assert() to _find_device_opp() PM / OPP: Hold dev_opp_list_lock for writers PM / OPP: Protect updates to list_dev with mutex PM / OPP: Propagate error properly from dev_pm_opp_set_sharing_cpus() cpufreq: s5pv210-cpufreq: fix wrong do_div() usage MAINTAINERS: update for intel P-state driver Creating a common structure initialization pattern for struct option cpupower: Enable disabled Cstates if they are below max latency cpupower: Remove debug message when using cpupower idle-set -D switch cpupower: cpupower monitor reports uninitialized values for offline cpus ...
| * Merge branch 'pm-opp'Rafael J. Wysocki2015-11-07
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * pm-opp: PM / OPP: Add opp_rcu_lockdep_assert() to _find_device_opp() PM / OPP: Hold dev_opp_list_lock for writers PM / OPP: Protect updates to list_dev with mutex PM / OPP: Propagate error properly from dev_pm_opp_set_sharing_cpus() PM / OPP: Parse all power-supply related bindings together PM / OPP: Rename routines specific to old bindings with _v1 PM / OPP: Improve print messages with pr_fmt
| | * PM / OPP: Add opp_rcu_lockdep_assert() to _find_device_opp()Viresh Kumar2015-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | _find_device_opp() should be called with rcu-read lock or dev_opp_list_lock held. Add the opp_rcu_lockdep_assert() check to make sure caller have taken appropriate locks. Fix comment over the routine as well. Suggested-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| | * PM / OPP: Hold dev_opp_list_lock for writersViresh Kumar2015-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | Writers need to update OPP device and their list with dev_opp_list_lock mutex held, which was missed at few places. Fix it. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Cc: 4.3 <stable@vger.kernel.org> # 4.3 Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| | * PM / OPP: Protect updates to list_dev with mutexViresh Kumar2015-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | dev_opp_list_lock is used everywhere to protect device and OPP lists, but dev_pm_opp_set_sharing_cpus() is missed somehow. And instead we used rcu-lock, which wouldn't help here as we are adding a new list_dev. This also fixes a problem where we have called kzalloc(..., GFP_KERNEL) from within rcu-lock, which isn't allowed as kzalloc can sleep when called with GFP_KERNEL. With CONFIG_DEBUG_ATOMIC_SLEEP set, we get following lockdep-splat: include/linux/rcupdate.h:578 Illegal context switch in RCU read-side critical section! other info that might help us debug this: rcu_scheduler_active = 1, debug_locks = 0 5 locks held by swapper/0/1: #0: (&dev->mutex){......}, at: [<c02f68f4>] __driver_attach+0x48/0x98 #1: (&dev->mutex){......}, at: [<c02f6904>] __driver_attach+0x58/0x98 #2: (cpu_hotplug.lock){++++++}, at: [<c00249d0>] get_online_cpus+0x40/0xb0 #3: (subsys mutex#5){+.+.+.}, at: [<c02f4f8c>] subsys_interface_register+0x44/0xdc #4: (rcu_read_lock){......}, at: [<c0305c80>] dev_pm_opp_set_sharing_cpus+0x0/0x1e4 stack backtrace: CPU: 1 PID: 1 Comm: swapper/0 Tainted: G W 4.3.0-rc7-00047-g81f5932958a8 #59 Hardware name: SAMSUNG EXYNOS (Flattened Device Tree) [<c0016874>] (unwind_backtrace) from [<c001355c>] (show_stack+0x10/0x14) [<c001355c>] (show_stack) from [<c022553c>] (dump_stack+0x94/0xbc) [<c022553c>] (dump_stack) from [<c004904c>] (___might_sleep+0x24c/0x298) [<c004904c>] (___might_sleep) from [<c00f07e4>] (kmem_cache_alloc+0xe8/0x164) [<c00f07e4>] (kmem_cache_alloc) from [<c0305354>] (_add_list_dev+0x30/0x58) [<c0305354>] (_add_list_dev) from [<c0305d50>] (dev_pm_opp_set_sharing_cpus+0xd0/0x1e4) [<c0305d50>] (dev_pm_opp_set_sharing_cpus) from [<c040eda4>] (cpufreq_init+0x4cc/0x62c) [<c040eda4>] (cpufreq_init) from [<c040a964>] (cpufreq_online+0xbc/0x73c) [<c040a964>] (cpufreq_online) from [<c02f4fe0>] (subsys_interface_register+0x98/0xdc) [<c02f4fe0>] (subsys_interface_register) from [<c040a640>] (cpufreq_register_driver+0x110/0x17c) [<c040a640>] (cpufreq_register_driver) from [<c040ef64>] (dt_cpufreq_probe+0x60/0x8c) [<c040ef64>] (dt_cpufreq_probe) from [<c02f8084>] (platform_drv_probe+0x44/0xa4) [<c02f8084>] (platform_drv_probe) from [<c02f67c0>] (driver_probe_device+0x208/0x2f4) [<c02f67c0>] (driver_probe_device) from [<c02f6940>] (__driver_attach+0x94/0x98) [<c02f6940>] (__driver_attach) from [<c02f4c1c>] (bus_for_each_dev+0x68/0x9c) Reported-by: Michael Turquette <mturquette@baylibre.com> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Cc: 4.3 <stable@vger.kernel.org> # 4.3 Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| | * PM / OPP: Propagate error properly from dev_pm_opp_set_sharing_cpus()Viresh Kumar2015-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We are returning 0 even in case of errors, fix it. Fixes: 8d4d4e98acd6 ("PM / OPP: Add helpers for initializing CPU OPPs") Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Cc: 4.3 <stable@vger.kernel.org> # 4.3 Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| | * PM / OPP: Parse all power-supply related bindings togetherViresh Kumar2015-11-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move all DT parsing for the power supplies to a single function, rather than keeping them at separate places. This will help manage things properly. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| | * PM / OPP: Rename routines specific to old bindings with _v1Viresh Kumar2015-11-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Clearly distinguish routines based on what version of bindings they parse. We have already postfixed routines properly with _v2 for new bindings. Postfix the older ones now with _v1. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| | * PM / OPP: Improve print messages with pr_fmtViresh Kumar2015-11-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | To identify OPP core's print messages easily, prefix them with KBUILD_MODNAME. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | | Merge branch 'next' of ↵Linus Torvalds2015-11-11
|/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux Pull thermal updates from Zhang Rui: - Implement generic devfreq cooling mechanism through frequency reduction for devices using devfreq. From Ørjan Eide and Javi Merino. - Introduce OMAP3 support on TI SoC thermal driver. From Pavel Mack and Eduardo Valentin. - A bounch of small fixes on devfreq_cooling, Exynos, IMX, Armada, and Rockchip thermal drivers. * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (24 commits) thermal: exynos: Directly return 0 instead of using local ret variable thermal: exynos: Remove unneeded semicolon thermal: exynos: Use IS_ERR() because regulator cannot be NULL thermal: exynos: Fix first temperature read after registering sensor thermal: exynos: Fix unbalanced regulator disable on probe failure devfreq_cooling: return on allocation failure thermal: rockchip: support the sleep pinctrl state to avoid glitches in s2r dt-bindings: rockchip-thermal: Add the pinctrl states in this document thermal: devfreq_cooling: Make power a u64 thermal: devfreq_cooling: use a thermal_cooling_device for register and unregister thermal: underflow bug in imx_set_trip_temp() thermal: armada: Fix possible overflow in the Armada 380 thermal sensor formula thermal: imx: register irq handler later in probe thermal: rockhip: fix setting thermal shutdown polarity thermal: rockchip: fix handling of invalid readings devfreq_cooling: add trace information thermal: Add devfreq cooling PM / OPP: get the voltage for all OPPs tools/thermal: tmon: use pkg-config also for CFLAGS linux/thermal.h: rename KELVIN_TO_CELSIUS to DECI_KELVIN_TO_CELSIUS ...
* / Merge branch 'pm-opp'Rafael J. Wysocki2015-11-02
|/ | | | | | | | | | * pm-opp: PM / OPP: passing NULL to PTR_ERR() PM / OPP: Move cpu specific code to opp/cpu.c PM / OPP: Move opp core to its own directory PM / OPP: Prefix exported opp routines with dev_pm_opp_ PM / OPP: Rename opp init/free table routines PM / OPP: reuse of_parse_phandle()
* PM / OPP: passing NULL to PTR_ERR()Dan Carpenter2015-10-09
| | | | | | | | | The code was using PTR_ERR(NULL) which causes a static checker warning. I have fixed up the printks and changed the return to -ENOENT. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* PM / OPP: Move cpu specific code to opp/cpu.cViresh Kumar2015-09-15
| | | | | | | | | | | | Move cpu device specific code out of generic opp library, and add it to cpu.c. Along with that, create a core-internal opp.h header, which will be used to share structures and function prototypes within opp core. Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* PM / OPP: Move opp core to its own directoryViresh Kumar2015-09-15
OPP code is expanding and is already present in multiple directories (cpufreq and power). Lets move it to its own directory, to manage it better. This also moves/renames the cpufreq_opp file to cpu.c, as it will contain helpers for cpu device. Its not just about cpufreq, other frameworks can use OPPs as well. Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
generated by cgit v1.2.3 (git 2.25.1) at 2026-01-28 05:03:40 +0000