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Diffstat (limited to 'arch/arm/mach-omap2/powerdomain.c')
-rw-r--r--arch/arm/mach-omap2/powerdomain.c14
1 files changed, 10 insertions, 4 deletions
diff --git a/arch/arm/mach-omap2/powerdomain.c b/arch/arm/mach-omap2/powerdomain.c
index 5164d587ef52..8a18d1bd61c8 100644
--- 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;