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ARM: 6174/1: ep93xx: clear devcfg bits before setting them

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The ep93xx core helper function ep93xx_devcfg_set_clear should mask the
clear_bits before setting the new set_bits in case the clear_bits are a
mask value that also includes the set_bits.

Signed-off-by: H Hartley Sweeten <[email protected]>
Acked-by: Ryan Mallon <[email protected]>
Signed-off-by: Russell King <[email protected]>
This commit is contained in:
Hartley Sweeten authored and Russell King committed 2010-06-16 22:56:06 +01:00
1 parent 16bcf78f8c
commit a0fb007bf0
1 file changed
+1 -1
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arch/arm/mach-ep93xx/core.c
+1 -1
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@@ -216,8 +216,8 @@ void ep93xx_devcfg_set_clear(unsigned int set_bits, unsigned int clear_bits)
spin_lock_irqsave(&syscon_swlock, flags);
val = __raw_readl(EP93XX_SYSCON_DEVCFG);
val |= set_bits;
val &= ~clear_bits;
val |= set_bits;
__raw_writel(0xaa, EP93XX_SYSCON_SWLOCK);
__raw_writel(val, EP93XX_SYSCON_DEVCFG);