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| author | Scott Wood <scottwood@freescale.com> | 2014-05-14 18:11:24 (GMT) |
|---|---|---|
| committer | Scott Wood <scottwood@freescale.com> | 2014-05-14 18:12:24 (GMT) |
| commit | ffb069a30665ec06c05916355bc3252e33fc863b (patch) | |
| tree | ba7b82696000c0f2983672d22966b83112da874e /arch/arm/mm | |
| parent | 8d5cd1658cb0c97d5429124f9fb5caa88c460186 (diff) | |
| parent | 3756888c2a2da9c7291d39cacd1184171111b49d (diff) | |
| download | linux-fsl-qoriq-ffb069a30665ec06c05916355bc3252e33fc863b.tar.xz | |
Merge remote-tracking branch 'stable/linux-3.12.y' into sdk-v1.6.x
Signed-off-by: Scott Wood <scottwood@freescale.com>
Conflicts:
arch/sparc/Kconfig
drivers/tty/tty_buffer.c
Diffstat (limited to 'arch/arm/mm')
| -rw-r--r-- | arch/arm/mm/mmap.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/arch/arm/mm/mmap.c b/arch/arm/mm/mmap.c index 304661d..5e85ed3 100644 --- a/arch/arm/mm/mmap.c +++ b/arch/arm/mm/mmap.c @@ -202,13 +202,11 @@ int valid_phys_addr_range(phys_addr_t addr, size_t size) } /* - * We don't use supersection mappings for mmap() on /dev/mem, which - * means that we can't map the memory area above the 4G barrier into - * userspace. + * Do not allow /dev/mem mappings beyond the supported physical range. */ int valid_mmap_phys_addr_range(unsigned long pfn, size_t size) { - return !(pfn + (size >> PAGE_SHIFT) > 0x00100000); + return (pfn + (size >> PAGE_SHIFT)) <= (1 + (PHYS_MASK >> PAGE_SHIFT)); } #ifdef CONFIG_STRICT_DEVMEM |