From: Kevin Hilman Date: Wed, 9 Jun 2010 10:53:09 +0000 (+0300) Subject: OMAP3: PM: fix IO daisy chain enable to use PM_WKEN reg X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=0b96a3a3c5c5e6e1b79a05c23d110d59518f4fc8;p=linux-beck.git OMAP3: PM: fix IO daisy chain enable to use PM_WKEN reg Checking to se if the IO daisy chain is enabled should be checking the PM_WKEN register, not the PM_WKST register. Reading PM_WKST tells us if an event occurred, not whether or not it is enabled. Apparently, we've been lucky until now in that a pending event has not been there during enable. However, on 3630/Zoom3, I noticed because of the WARN that this timeout was always happening. Signed-off-by: Kevin Hilman Signed-off-by: Tony Lindgren --- diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c index 2e967716cc3f..b88737fd6cfe 100644 --- a/arch/arm/mach-omap2/pm34xx.c +++ b/arch/arm/mach-omap2/pm34xx.c @@ -99,7 +99,7 @@ static void omap3_enable_io_chain(void) /* Do a readback to assure write has been done */ prm_read_mod_reg(WKUP_MOD, PM_WKEN); - while (!(prm_read_mod_reg(WKUP_MOD, PM_WKST) & + while (!(prm_read_mod_reg(WKUP_MOD, PM_WKEN) & OMAP3430_ST_IO_CHAIN_MASK)) { timeout++; if (timeout > 1000) { @@ -108,7 +108,7 @@ static void omap3_enable_io_chain(void) return; } prm_set_mod_reg_bits(OMAP3430_ST_IO_CHAIN_MASK, - WKUP_MOD, PM_WKST); + WKUP_MOD, PM_WKEN); } } }