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| author | Alex Shi <alex.shi@linaro.org> | 2016-04-13 12:02:21 +0800 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2016-04-13 12:02:21 +0800 |
| commit | 08562bfcb85748c69e5824fc6d1d77d5725787e4 (patch) | |
| tree | 905e39ccad43e244dbb09d4eccce1c91e0facce0 /drivers/acpi/resource.c | |
| parent | 9fe9bdd75b2ad9ed25152fce02f41fe63c542e8a (diff) | |
| parent | ad592b70ae97800d4f5bf535d45a680649e2789e (diff) | |
Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android
Diffstat (limited to 'drivers/acpi/resource.c')
| -rw-r--r-- | drivers/acpi/resource.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c index cdc5c2599beb..627f8fbb5e9a 100644 --- a/drivers/acpi/resource.c +++ b/drivers/acpi/resource.c @@ -26,8 +26,20 @@ #ifdef CONFIG_X86 #define valid_IRQ(i) (((i) != 0) && ((i) != 2)) +static inline bool acpi_iospace_resource_valid(struct resource *res) +{ + /* On X86 IO space is limited to the [0 - 64K] IO port range */ + return res->end < 0x10003; +} #else #define valid_IRQ(i) (true) +/* + * ACPI IO descriptors on arches other than X86 contain MMIO CPU physical + * addresses mapping IO space in CPU physical address space, IO space + * resources can be placed anywhere in the 64-bit physical address space. + */ +static inline bool +acpi_iospace_resource_valid(struct resource *res) { return true; } #endif static bool acpi_dev_resource_len_valid(u64 start, u64 end, u64 len, bool io) @@ -126,7 +138,7 @@ static void acpi_dev_ioresource_flags(struct resource *res, u64 len, if (!acpi_dev_resource_len_valid(res->start, res->end, len, true)) res->flags |= IORESOURCE_DISABLED | IORESOURCE_UNSET; - if (res->end >= 0x10003) + if (!acpi_iospace_resource_valid(res)) res->flags |= IORESOURCE_DISABLED | IORESOURCE_UNSET; if (io_decode == ACPI_DECODE_16) |