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authorBen Dooks <ben.dooks@codethink.co.uk>2016-06-21 11:20:23 +0100
committerKrzysztof Kozlowski <k.kozlowski@samsung.com>2016-06-21 13:08:14 +0200
commitf4c24f36c3e457cb727f9f548f146d805739e8e0 (patch)
tree6eae2bd2bed51b3be79048adda50eb802980359a /arch/arm/plat-samsung
parent4fdfa8623d0a3aca30da57980b14d1686c48c2d5 (diff)
downloadblackbird-op-linux-f4c24f36c3e457cb727f9f548f146d805739e8e0.tar.gz
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ARM: SAMSUNG: Fixup endian issues in CPU detection
If the system is built for big endian, then the CPU identificaiton register will be read in the wrong order. Fix this by using readl_relaxed() on the register. Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Diffstat (limited to 'arch/arm/plat-samsung')
-rw-r--r--arch/arm/plat-samsung/cpu.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/arm/plat-samsung/cpu.c b/arch/arm/plat-samsung/cpu.c
index 71333bb61013..bd12a55401e0 100644
--- a/arch/arm/plat-samsung/cpu.c
+++ b/arch/arm/plat-samsung/cpu.c
@@ -29,14 +29,14 @@ EXPORT_SYMBOL(samsung_rev);
void __init s3c64xx_init_cpu(void)
{
- samsung_cpu_id = __raw_readl(S3C_VA_SYS + 0x118);
+ samsung_cpu_id = readl_relaxed(S3C_VA_SYS + 0x118);
if (!samsung_cpu_id) {
/*
* S3C6400 has the ID register in a different place,
* and needs a write before it can be read.
*/
- __raw_writel(0x0, S3C_VA_SYS + 0xA1C);
- samsung_cpu_id = __raw_readl(S3C_VA_SYS + 0xA1C);
+ writel_relaxed(0x0, S3C_VA_SYS + 0xA1C);
+ samsung_cpu_id = readl_relaxed(S3C_VA_SYS + 0xA1C);
}
samsung_cpu_rev = 0;
@@ -46,7 +46,7 @@ void __init s3c64xx_init_cpu(void)
void __init s5p_init_cpu(void __iomem *cpuid_addr)
{
- samsung_cpu_id = __raw_readl(cpuid_addr);
+ samsung_cpu_id = readl_relaxed(cpuid_addr);
samsung_cpu_rev = samsung_cpu_id & 0xFF;
pr_info("Samsung CPU ID: 0x%08lx\n", samsung_cpu_id);
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