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* | | | serial: samsung: correct the case and default order in switchNaveen Krishna Chatradhi2014-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The cases should comes before default in a switch. Even if we want the case and default to share same code. Its good to define the case first followed by default. Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | | serial: samsung: get fifosize via device treeNaveen Krishna Chatradhi2014-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | UART modules on some SoCs only differ in the fifosize of each UART channel. Its useless to duplicate the drv_data structure or create a compatible name for such a change. We can get fifosize via the device tree nodes (not mandating it). Also updates the documentation. Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | | serial: 8250: introduce up_to_u8250p() helperAndy Shevchenko2014-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | It helps to cast struct uart_port to struct uart_8250_port at runtime. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | | tty: serial: fsl_lpuart: add 32-bit register interface supportJingchang Lu2014-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This add the 32-bit register version LPUART support with big-endian byte order. Signed-off-by: Jingchang Lu <jingchang.lu@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | | serial: sh-sci: Add calculation recive margin for HSCIFNobuhiro Iwamatsu2014-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the error of the same bit rate is detected, we will need to select the recive margin is large. Current code holds the minimum error, it does not have to check the recive margin. This adds this calculation. Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | | serial: sh-sci: Fix range check of bit-rate for HSCIFNobuhiro Iwamatsu2014-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If bit-rate calculation result of HSCIF is expect 255 from 0, driver does not calculate error bit. However, we need to round the value to calculate error bit in the case of negative value. This rounds the value of bit-rate using clamp(), and bit-rate is the case of negative value, it enables the calculation of the error bit. Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | | serial: sh-sci: Updated calculation of bit error rate and bit rateNobuhiro Iwamatsu2014-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, the decimal point is discarded calculation of BRR. Therefore, it can not calculate a value close to the correct value. This patch fixes this problem by using DIV_ROUND_CLOSEST. Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | | Merge 3.16-rc5 into tty-next.Greg Kroah-Hartman2014-07-13
|\| | | | | | | | | | | | | | | | | | | | | | | We want those fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: imx: Fix build breakagePeter Hurley2014-07-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix breakage introduced by commit c557d392fbf5badd693ea1946a4317c87a26a716, 'serial: Test for no tx data on tx restart'. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: arc_uart: Use uart_circ_empty() for open-coded comparisonPeter Hurley2014-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace open-coded test for empty tx ring buffer with equivalent helper function, uart_circ_empty(). No functional change. Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: Test for no tx data on tx restartPeter Hurley2014-07-10
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 717f3bbab3c7628736ef738fdbf3d9a28578c26c, 'serial_core: Fix conditional start_tx on ring buffer not empty' exposes an incorrect assumption in several drivers' start_tx methods; the tx ring buffer can, in fact, be empty when restarting tx while performing flow control. Affected drivers: sunsab.c ip22zilog.c pmac_zilog.c sunzilog.c m32r_sio.c imx.c Other in-tree serial drivers either are not affected or already test for empty tx ring buffer before transmitting. Test for empty tx ring buffer in start_tx() method, after transmitting x_char (if applicable). Reported-by: Aaro Koskinen <aaro.koskinen@iki.fi> Cc: Seth Bollinger <sethb@digi.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Cc: stable <stable@vger.kernel.org> # 3.15 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial: pch_uart: Update error message for dmaengine_prep_slave_sg() APIGeert Uytterhoeven2014-07-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 16052827d98fbc13c31ebad560af4bd53e2b4dd5 ("dmaengine/dma_slave: introduce inline wrappers") changed the code to use the new API, but forgot to update an error message. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Cc: Jiri Kosina <trivial@kernel.org> Cc: linux-serial@vger.kernel.org -- v2: - New Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial/arc: Fix warning with CONSOLE_POLLVineet Gupta2014-07-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | drivers/tty/serial/arc_uart.c:516:2: warning: (near initialization for 'arc_serial_pops.poll_put_char') [enabled by default] This partially undoes "serial/arc: use uart_console_write() helper" by restoring the prototpye of poll helper and use a different one in uart_console_write() Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial: altera: Adopt uart_console_write()Daniel Thompson2014-07-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This driver does not currently use uart_console_write() and instead provides is own LF to LFCR conversion in it's console_write() method. We should use the library function instead. Cmopile tested only (with ARCH=arm). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Cc: Tobias Klauser <tklauser@distanz.ch> Cc: Jiri Slaby <jslaby@suse.cz> Cc: linux-serial@vger.kernel.org Cc: nios2-dev@lists.rocketboards.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial: efm32: correct namespacing of location propertyUwe Kleine-König2014-07-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Olof Johansson pointed out that usually the company name is picked as namespace prefix to specific properties. So expect "energymicro,location" but fall back to the previously introduced name "efm32,location". Cc: Olof Johansson <olof@lixom.net> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | tty: serial: msm: Support big-endian CPUsStephen Boyd2014-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To support big-endian CPUs use the string versions of the io read/write macros on the TX/RX fifos and the non-raw variants of the readl/writel macros throughout. This way we don't byteswap the characters coming from the fifos but we properly deal with the little-endian nature of the serial hardware while controlling it. Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial: txx9: remove duplicate TXX9_SIFCR_TDIL_MASK defineDan Carpenter2014-07-10
| | | | | | | | | | | | | | | | | | | | | | | | The TXX9_SIFCR_TDIL_MASK define is cut and pasted twice so we can delete the second instance. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial: blackfin: Fix CTS flow controlPeter Hurley2014-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | blackfin uart port drivers mistakenly set the struct uart_port flags bit UPF_BUG_THRE (which only has meaning to the 8250 core) while trying to set ASYNC_CTS_FLOW. Uart port drivers can override termios settings based on actual hardware support in their .set_termios method; the serial core sets the appropriate port flags based on the overrides. Overriding only the initial termios settings is accomplished by only perform those overrides if the old termios parameter is NULL. CC: Sonic Zhang <sonic.zhang@analog.com> CC: adi-buildroot-devel@lists.sourceforge.net Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | tty: serial: Fix termios/port flags mismatchPeter Hurley2014-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | Uart port drivers may reconfigure termios settings based on available hardware support; set/clear ASYNC_CTS_FLOW and ASYNC_CHECK_CD _after_ calling the port driver's .set_termios method. Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | tty: Remove tty_hung_up_p() tests from tty drivers' open()Peter Hurley2014-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since at least before 2.6.30, it has not been possible to observe a hung up file pointer in a tty driver's open() method unless/until the driver open() releases the tty_lock() (eg., before blocking). This is because tty_open() adds the file pointer while holding the tty_lock() _and_ doesn't release the lock until after calling the tty driver's open() method. [ Before tty_lock(), this was lock_kernel(). ] Since __tty_hangup() first waits on the tty_lock() before enumerating and hanging up the open file pointers, either __tty_hangup() will wait for the tty_lock() or tty_open() will not yet have added the file pointer. For example, CPU 0 | CPU 1 | tty_open | __tty_hangup .. | .. tty_lock | .. tty_reopen | tty_lock / blocks .. | tty_add_file(tty, filp) | .. | tty->ops->open(tty, filp) | tty_port_open | tty_port_block_til_ready | .. | while (1) | .. | tty_unlock | / unblocks schedule | for each filp on tty->tty_files | f_ops = tty_hung_up_fops; | .. | tty_unlock tty_lock | .. | tty_unlock | Note that since tty_port_block_til_ready() and similar drop the tty_lock while blocking, when woken, the file pointer must then be tested for having been hung up. Also, fix bit-rotted drivers that used extra_count to track the port->count bump. CC: Mikael Starvik <starvik@axis.com> CC: Samuel Ortiz <samuel@sortiz.org> CC: "David S. Miller" <davem@davemloft.net> Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial: Use UPF_* constants with struct uart_port flagsPeter Hurley2014-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix ASYNC_* constant usage that should be the corresponding UPF_* constant. CC: Grant Likely <grant.likely@linaro.org> CC: Rob Herring <robh+dt@kernel.org> CC: devicetree@vger.kernel.org Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | tty: Move tty->closing from port lock critical sectionPeter Hurley2014-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | tty->closing informs the line discipline that the hardware will be shutting down imminently, and to disable further input other than soft flow control (but to still allow additional output). However, the tty lock is the necessary lock for preventing concurrent changes to tty->closing. As shown by the call-tree audit [1] of functions that modify tty->closing, the tty lock is already held for those functions. [1] Call-tree audit of functions that modify tty->closing * does not include call tree to tty_port_close(), tty_port_close_start(), or tty_port_close_end() which is already documented in 'tty: Document locking for tty_port_close{,start,end}' that shows callers to those 3 functions hold the tty lock tty_release() tty->ops->close() --+ | __tty_hangup() | tty->ops->close() --+ | mp_close():drivers/staging/sb105x/sb_pci_mp.c dngc_tty_close():drivers/staging/dgnc/dgnc_tty.c dgap_tty_close():drivers/staging/dgap/dgap_tty.c dgrp_tty_close():drivers/staging/dgrp/dgrp_tty.c rp_close():drivers/tty/rocket.c hvsi_close():drivers/tty/hvc/hvsi.c rs_close():drivers/tty/serial/68328serial.c rs_close():drivers/tty/serial/crisv10.c uart_close():drivers/tty/serial/serial_core.c isdn_tty_close():drivers/isdn/i4l/isdn_tty.c tty3215_close():drivers/s390/char/con3215.c tty_open() tty_ldisc_setup() ----+ | __tty_hangup() | tty_ldisc_hangup() ---+ | tty_set_ldisc() --------+ tty_ldisc_restore() --+ | +- tty_ldisc_open() ld->ops->open() --+ | +- n_tty_open() Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial: fsl_lpuart: calculate DMA burstStefan Agner2014-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The DMA burst size must match the transmit FIFO depth in order to make sure all character are transmitted. This patch calculates DMA burst size by using FIFO depth rather than use the hardcoded 16 bytes. This is required since some UARTs (e.g. UART2 on Vybrid) have a FIFO depth of 8 bytes. Signed-off-by: Stefan Agner <stefan@agner.ch> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial: fsl_lpuart: move DMA RX timeout calculationStefan Agner2014-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The DMA RX timeout calculation is done based on FIFO buffer size and port timeout when setting up DMA. However, both variables are not necessarily initialized at DMA initialization time, which can lead to a division by zero. Move the timeout calculation to set_termios where both variables are initialized. Signed-off-by: Stefan Agner <stefan@agner.ch> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial: core: Preserve termios c_cflag for console resumePeter Hurley2014-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When a tty is opened for the serial console, the termios c_cflag settings are inherited from the console line settings. However, if the tty is subsequently closed, the termios settings are lost. This results in a garbled console if the console is later suspended and resumed. Preserve the termios c_cflag for the serial console when the tty is shutdown; this reflects the most recent line settings. Fixes: Bugzilla #69751, 'serial console does not wake from S3' Reported-by: Valerio Vanni <valerio.vanni@inwind.it> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial: tegra: ack the rx dma desc after transfer terminatedPradeep Goudagunta2014-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Rx dma descriptor allocated without the DMA_ACK flags so that once after tarnsfer done or terminated, client can ack the descriptor to free it for later use. If the Rx DMA is terminated for some reason then rx-dma descriptor is not getting acked which causes the memory leak and list of usage desc to grow continuously. Hence, acknowledge the rx-dma descriptor once transfer is terminated to avoid memory leak and desc list to grow. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial: tegra: update tx_circular buffer only when TX_DMA is in progressPradeep Goudagunta2014-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When channel is require to stop transmit then update the Tx circular buffer only when DMA based transfer is in progress. If there is no DMA based transfer then no need to update the Tx buffer. Signed-off-by: Pradeep Goudagunta <pgoudagunta@nvidia.com> Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial: lpc32xx uart module can't do consoleArnd Bergmann2014-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Every uart driver that provides a console driver needs to be built-in for the console code to work, we get a build error for modular console drivers. This changes the SERIAL_HS_LPC32XX_CONSOLE symbol to depend on the SERIAL_HS_LPC32XX driver being built-in, just like we do for all the other uart drivers. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial: pxa: fix build with !SERIAL_PXA_CONSOLEArnd Bergmann2014-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | When CONFIG_SERIAL_PXA_CONSOLE is disabled, the serial_pxa_get_poll_char and serial_pxa_put_poll_char functions are not defined, and we can't reference them. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial/arc: Enable DT based earlyconVineet Gupta2014-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | This allows a param less earlycon to pick up the earlyconsole from chosen/stdout-path Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial/arc: inline the probe helperVineet Gupta2014-07-10
| | | | | | | | | | | | | | | | | | Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial/arc: remove last remanants of platform dataVineet Gupta2014-07-10
| | | | | | | | | | | | | | | | | | Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial/arc: remove earlyprintk support and switch to earlyconVineet Gupta2014-07-10
| | | | | | | | | | | | | | | | | | Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial/arc: Use generic earlycon infrastructureVineet Gupta2014-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | With this change both earlyprintk and earlycon coexist We switch over to latter in next patch Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial/arc: Remove the workaround for legacy ISSVineet Gupta2014-07-10
| | | | | | | | | | | | | | | | | | Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial/arc: Refactor by referencing to uart_port where possibleVineet Gupta2014-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ARC UART MMIO helpers would take arc_uart_port and then reference generic uart_port->membase member. So change them to difrectly refer to uart_port and fix call sites accordingly. This removes the need for to_arc_port() converion almost eveeywhere and makes code a bit easier to read. Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial/arc: use uart_console_write() helperVineet Gupta2014-07-10
| | | | | | | | | | | | | | | | | | Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial: 8250_dw: add ability to handle the peripheral clockHeiko Stübner2014-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | First try to find the named clock variants then fall back to the already existing handling of a nameless declared baudclk. This also adds the missing documentation for this already existing variant. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial: 8250_dw: use UPF_* constants when define flagsAndy Shevchenko2014-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The flags member has upf_t type and corresponding macros to define them. This patch converts ASYNC_SKIP_TEST to UPF_SKIP_TEST in 8250_dw.c. Otherwise we got a sparse warning: drivers/tty/serial/8250/8250_dw.c:302:46: warning: restricted upf_t degrades to integer drivers/tty/serial/8250/8250_dw.c:302:62: warning: restricted upf_t degrades to integer drivers/tty/serial/8250/8250_dw.c:302:26: warning: incorrect type in assignment (different base types) drivers/tty/serial/8250/8250_dw.c:302:26: expected restricted upf_t [usertype] flags drivers/tty/serial/8250/8250_dw.c:302:26: got unsigned int Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial: 8250_dw: clock rate handling for all ACPI platformsHeikki Krogerus2014-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This replaces the Baytrail specific custom set_termios hook with a more generic one where the clock framework is used to set the rate. The method also doesn't need to be limited to just Baytrail, so it's used with all ACPI platforms. Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial: samsung: Use %pa to print 'resource_size_t' typeFabio Estevam2014-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When building multi_v7_defconfig with CONFIG_ARM_LPAE=y the following warning is seen: drivers/tty/serial/samsung.c: In function 's3c24xx_serial_init_port': drivers/tty/serial/samsung.c:1229:2: warning: format '%x' expects argument of type 'unsigned int', but argument 2 has type 'resource_size_t' [-Wformat] Use %pa to print 'resource_size_t' type to fix the warning. Reported-by: Olof's autobuilder <build@lixom.net> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Reviewed-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | tty: serial: msm_serial.c: Cleaning up uninitialized variablesRickard Strandqvist2014-07-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | There is a risk that the variable will be used without being initialized. This was largely found by using a static code analysis program called cppcheck. Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial: sirf: transfer more bytes once to decrease interruptsQipan Li2014-07-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | the current codes send 1 bytes, then after getting TX done interrupt, send subsequent bytes. it causes redundant interrupts. for example, if we have 3 bytes in TX buffer, the TX flow is: 1. send 1 byte 2. get TX down interrupt 3. send the left 2 bytes 4. get TX down interrupt this patch moves to send more bytes and decrease interrupts, the new flow is: 1. send 3 bytes 2. get TX down interrupt Signed-off-by: Qipan Li <Qipan.Li@csr.com> Signed-off-by: Barry Song <Baohua.Song@csr.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | tty: serial: men_z135_uart: Wakeup UART after transmittingJohannes Thumshirn2014-07-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Call uart_write_wakeup() after writing the hardware FIFO and updateing the FIFO pointers. This fixes high latency and jitter on PPP over Serial links. Reported-by: Jun Shih <Jun.Shih@pason.com> Tested-by: Jun Shih <Jun.Shih@pason.com> Signed-off-by: Johannes Thumshirn <johannes.thumshirn@men.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial: treewide: Remove empty implementations of enable_ms()Alexander Shiyan2014-07-09
| | | | | | | | | | | | | | | Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial: core: Make enable_ms() optionalAlexander Shiyan2014-07-09
| | | | | | | | | | | | | | | | | | | | | | | | This patch makes enable_ms() optional, so we can eliminate a lot of empty enable_ms() implementations from driver code. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial: samsung: no more support for S5PC100 SoCKukjin Kim2014-07-09
| | | | | | | | | | | | | | | | | | | | | | | | This patch removes s5pc100 related serial. Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial: samsung: no more support for S5P6440 and S5P6450 SoCsKukjin Kim2014-07-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes s5p64x0 related serial because of removing support for s5p64x0 SoCs. Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial: samsung: Consider DT alias when probing portsTomasz Figa2014-07-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Current driver code relies on probe order of particular samsung-uart instances, which makes it impossible to get proper initialization of ports when not all ports are available on board, not even saying of deterministic device naming. This patch fixes this on DT-enabled systems by using DT aliases for ports as instance ID, if specified, or falling back to legacy method otherwise to provide backwards compatibility. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | serial: amba-pl010: Use devres APIsTushar Behera2014-07-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | Migrating to use devres managed APIs devm_kzalloc, devm_ioremap and devm_clk_get. Signed-off-by: Tushar Behera <tushar.b@samsung.com> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
generated by cgit v1.2.3 (git 2.25.1) at 2026-07-29 18:02:47 +0000