From 17f272d8e4349543de855ea63e4eea4a67a7abc5 Mon Sep 17 00:00:00 2001 From: Yegor Yefremov Date: Mon, 23 Jan 2012 08:32:23 +0100 Subject: [PATCH] ARM: OMAP2+: GPMC: fix device size setup commit 8ef5d844cc3a644ea6f7665932a4307e9fad01fa upstream. 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 Signed-off-by: Tony Lindgren Signed-off-by: Greg Kroah-Hartman --- arch/arm/mach-omap2/gpmc.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c index 130034bf01d5..dfffbbf4c009 100644 --- a/arch/arm/mach-omap2/gpmc.c +++ b/arch/arm/mach-omap2/gpmc.c @@ -528,7 +528,13 @@ int gpmc_cs_configure(int cs, int cmd, int wval) 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; -- 2.34.1