ARM: OMAP2+: GPMC: fix device size setup
following statement can only change device size from 8-bit(0) to 16-bit(1),
but not vice versa:
regval |= GPMC_CONFIG1_DEVICESIZE(wval);
so as this field has 1 reserved bit, that could be used in future,
just clear both bits and then OR with the desired value
Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c
index 130034b..dfffbbf 100644
--- a/arch/arm/mach-omap2/gpmc.c
+++ b/arch/arm/mach-omap2/gpmc.c
@@ -528,7 +528,13 @@
case GPMC_CONFIG_DEV_SIZE:
regval = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
+
+ /* clear 2 target bits */
+ regval &= ~GPMC_CONFIG1_DEVICESIZE(3);
+
+ /* set the proper value */
regval |= GPMC_CONFIG1_DEVICESIZE(wval);
+
gpmc_cs_write_reg(cs, GPMC_CS_CONFIG1, regval);
break;