Merge branch 'drm-intel-fixes' of git://people.freedesktop.org/~keithp/linux into...

[pandora-kernel.git] / arch / arm / mach-omap2 / powerdomain.c

diff --git a/arch/arm/mach-omap2/powerdomain.c b/arch/arm/mach-omap2/powerdomain.c
index 5164d58..8a18d1b 100644 (file)
--- a/arch/arm/mach-omap2/powerdomain.c
+++ b/arch/arm/mach-omap2/powerdomain.c
@@ -1002,16 +1002,16 @@ int pwrdm_post_transition(void)
  * @pwrdm: struct powerdomain * to wait for
  *
  * Context loss count is the sum of powerdomain off-mode counter, the
- * logic off counter and the per-bank memory off counter.  Returns 0
+ * logic off counter and the per-bank memory off counter.  Returns negative
  * (and WARNs) upon error, otherwise, returns the context loss count.
  */
-u32 pwrdm_get_context_loss_count(struct powerdomain *pwrdm)
+int pwrdm_get_context_loss_count(struct powerdomain *pwrdm)
 {
        int i, count;
 
        if (!pwrdm) {
                WARN(1, "powerdomain: %s: pwrdm is null\n", __func__);
-               return 0;
+               return -ENODEV;
        }
 
        count = pwrdm->state_counter[PWRDM_POWER_OFF];
@@ -1020,7 +1020,13 @@ u32 pwrdm_get_context_loss_count(struct powerdomain *pwrdm)
        for (i = 0; i < pwrdm->banks; i++)
                count += pwrdm->ret_mem_off_counter[i];
 
-       pr_debug("powerdomain: %s: context loss count = %u\n",
+       /*
+        * Context loss count has to be a non-negative value. Clear the sign
+        * bit to get a value range from 0 to INT_MAX.
+        */
+       count &= INT_MAX;
+
+       pr_debug("powerdomain: %s: context loss count = %d\n",
                 pwrdm->name, count);
 
        return count;