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

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 <hsweeten@visionengravers.com>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/mach-ep93xx/core.c b/arch/arm/mach-ep93xx/core.c
index f4b25bf..8e37a04 100644 (file)
--- a/arch/arm/mach-ep93xx/core.c
+++ b/arch/arm/mach-ep93xx/core.c
@@ -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);