[PATCH] OMAP24xx: CM: fix mask used for checking IDLEST status

[Kevin Hilman <khilman@deeprootsystems.com>]

On OMAP24xx, the polarity for the IDLEST bits is opposite of OMAP3.
The mask used to check this was using the bit position instead of the
bit mask.

This patch fixes the problem by using the bit mask instead of the bit
field.

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
---
Found when testing UART hwmods on OMAP2420 (n810)

 arch/arm/mach-omap2/cm.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm/mach-omap2/cm.c b/arch/arm/mach-omap2/cm.c
index 2d83565..721c3b6 100644
--- a/arch/arm/mach-omap2/cm.c
+++ b/arch/arm/mach-omap2/cm.c
@@ -50,15 +50,15 @@ int omap2_cm_wait_module_ready(s16 prcm_mod, u8 idlest_id, u8 idlest_shift)
 
 	cm_idlest_reg = cm_idlest_offs[idlest_id - 1];
 
+	mask = 1 << idlest_shift;
+
 	if (cpu_is_omap24xx())
-		ena = idlest_shift;
+		ena = mask;
 	else if (cpu_is_omap34xx())
 		ena = 0;
 	else
 		BUG();
 
-	mask = 1 << idlest_shift;
-
 	/* XXX should be OMAP2 CM */
 	omap_test_timeout(((cm_read_mod_reg(prcm_mod, cm_idlest_reg) & mask) == ena),
 			  MAX_MODULE_READY_TIME, i);
-- 
1.7.0.2