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| author | Ben Dooks <ben.dooks@codethink.co.uk> | 2016-06-21 12:20:23 +0200 |
|---|---|---|
| committer | Krzysztof Kozlowski <k.kozlowski@samsung.com> | 2016-06-21 13:08:14 +0200 |
| commit | f4c24f36c3e457cb727f9f548f146d805739e8e0 (patch) | |
| tree | 6eae2bd2bed51b3be79048adda50eb802980359a /arch/arm/plat-samsung | |
| parent | ARM: EXYNOS: Fixup debug macros for big-endian (diff) | |
| download | linux-f4c24f36c3e457cb727f9f548f146d805739e8e0.tar.xz linux-f4c24f36c3e457cb727f9f548f146d805739e8e0.zip | |
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.c | 8 |
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); |