diff options
| author | Rajendra Nayak <rnayak@ti.com> | 2011-07-10 05:56:55 -0600 |
|---|---|---|
| committer | Paul Walmsley <paul@pwsan.com> | 2011-07-10 05:56:55 -0600 |
| commit | 555e74ea08bfc04a0136f976cbaa200addf1ba87 (patch) | |
| tree | afac050a2669fcf1e47d764785f9007c568b9e15 /arch/arm/mach-omap2/clockdomain.h | |
| parent | b86cfb52a145d8ddad66b98c39c6764f3883cd5a (diff) | |
| download | lwn-555e74ea08bfc04a0136f976cbaa200addf1ba87.tar.gz lwn-555e74ea08bfc04a0136f976cbaa200addf1ba87.zip | |
OMAP2+: clockdomain: Add per clkdm lock to prevent concurrent state programming
Since the clkdm state programming is now done from within the hwmod
framework (which uses a per-hwmod lock) instead of the being done
from the clock framework (which used a global lock), there is now a
need to have per-clkdm locking to prevent races between different
hwmods/modules belonging to the same clock domain concurrently
programming the clkdm state.
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Diffstat (limited to 'arch/arm/mach-omap2/clockdomain.h')
| -rw-r--r-- | arch/arm/mach-omap2/clockdomain.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/clockdomain.h b/arch/arm/mach-omap2/clockdomain.h index 8782a5cadfa6..1e50c88b8a07 100644 --- a/arch/arm/mach-omap2/clockdomain.h +++ b/arch/arm/mach-omap2/clockdomain.h @@ -17,6 +17,7 @@ #define __ARCH_ARM_MACH_OMAP2_CLOCKDOMAIN_H #include <linux/init.h> +#include <linux/spinlock.h> #include "powerdomain.h" #include <plat/clock.h> @@ -128,6 +129,7 @@ struct clockdomain { const struct omap_chip_id omap_chip; atomic_t usecount; struct list_head node; + spinlock_t lock; }; /** |