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ARM: OMAP: Don't restore of DMTIMER TISTAT register 

The timer TISTAT register is a read-only register and therefore restoring the
context is not needed. Furthermore, the context of TISTAT is never saved
anywhere in the current code. The TISTAT register is read-only for all OMAP
devices from OMAP1 to OMAP4. OMAP5 timers no longer have this register.

Signed-off-by: Jon Hunter <jon-hunter@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
This commit is contained in:
Jon Hunter 2012-09-28 16:09:03 -05:00
parent ffc957bd83
commit d3004bb43d
2 changed files with 0 additions and 4 deletions
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3
arch/arm/plat-omap/dmtimer.c
View File

@ -83,9 +83,6 @@ static void omap_dm_timer_write_reg(struct omap_dm_timer *timer, u32 reg,
static void omap_timer_restore_context(struct omap_dm_timer *timer)
{
if (timer->revision == 1)
__raw_writel(timer->context.tistat, timer->sys_stat);
__raw_writel(timer->context.tisr, timer->irq_stat);
omap_dm_timer_write_reg(timer, OMAP_TIMER_WAKEUP_EN_REG,
timer->context.twer);

1
arch/arm/plat-omap/include/plat/dmtimer.h
View File

@ -84,7 +84,6 @@ struct omap_dm_timer;
struct timer_regs {
u32 tidr;
u32 tistat;
u32 tisr;
u32 tier;
u32 twer;