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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-13 16:35:33 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-13 16:35:33 -0700 |
| commit | d94bc4fc24ed6263746934ace161ab916818d38a (patch) | |
| tree | d6c8045823efe4ef1599261e8451775b19dcfd00 /arch/arm/mm/ioremap.c | |
| parent | 70813196581fc636cb8a49e9bba9e04bda76206e (diff) | |
| parent | 06c10884486a63a1e4ff657aaa51e848e64b9dc3 (diff) | |
| download | linux-d94bc4fc24ed6263746934ace161ab916818d38a.tar.gz | |
Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm:
ARM: relax ioremap prohibition (309caa9) for -final and -stable
ARM: 6440/1: ep93xx: DMA: fix channel_disable
cpuimx27: fix i2c bus selection
cpuimx27: fix compile when ULPI is selected
ARM: 6435/1: Fix HWCAP_TLS flag for ARM11MPCore/Cortex-A9
ARM: 6436/1: AT91: Fix power-saving in idle-mode on 926T processors
ARM: fix section mismatch warnings in Versatile Express
ARM: 6412/1: kprobes-decode: add support for MOVW instruction
ARM: 6419/1: mmu: Fix MT_MEMORY and MT_MEMORY_NONCACHED pte flags
ARM: 6416/1: errata: faulty hazard checking in the Store Buffer may lead to data corruption
Diffstat (limited to 'arch/arm/mm/ioremap.c')
| -rw-r--r-- | arch/arm/mm/ioremap.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c index ab506272b2d3..17e7b0b57e49 100644 --- a/arch/arm/mm/ioremap.c +++ b/arch/arm/mm/ioremap.c @@ -204,8 +204,12 @@ void __iomem * __arm_ioremap_pfn_caller(unsigned long pfn, /* * Don't allow RAM to be mapped - this causes problems with ARMv6+ */ - if (WARN_ON(pfn_valid(pfn))) - return NULL; + if (pfn_valid(pfn)) { + printk(KERN_WARNING "BUG: Your driver calls ioremap() on system memory. This leads\n" + KERN_WARNING "to architecturally unpredictable behaviour on ARMv6+, and ioremap()\n" + KERN_WARNING "will fail in the next kernel release. Please fix your driver.\n"); + WARN_ON(1); + } type = get_mem_type(mtype); if (!type) |