Thread (4 messages) flat view 4 messages, 2 authors, 2012-08-08
STALE5117d

[PATCH 1/2] cpufreq: OMAP: Handle missing frequency table on SMP systems

From: Rajendra Nayak <hidden>
Date: 2012-08-08 10:54:13
Also in: linux-omap
Subsystem: cpu frequency scaling framework, the rest · Maintainers: "Rafael J. Wysocki", Viresh Kumar, Linus Torvalds

On OMAP4, if the first CPU fails to get a valid frequency table (this
could happen if the platform does not register any OPP table), the
subsequent CPU instances end up dealing with a NULL freq_table and
crash. Add a check for a NULL freq_table to help error the rest
of the CPU instances out.

Signed-off-by: Rajendra Nayak <redacted>
Cc: <redacted>
---
 drivers/cpufreq/omap-cpufreq.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/cpufreq/omap-cpufreq.c b/drivers/cpufreq/omap-cpufreq.c
index 17fa04d..0ee824c 100644
--- a/drivers/cpufreq/omap-cpufreq.c
+++ b/drivers/cpufreq/omap-cpufreq.c
@@ -221,7 +221,7 @@ static int __cpuinit omap_cpu_init(struct cpufreq_policy *policy)
 	if (atomic_inc_return(&freq_table_users) == 1)
 		result = opp_init_cpufreq_table(mpu_dev, &freq_table);
 
-	if (result) {
+	if (result || !freq_table) {
 		dev_err(mpu_dev, "%s: cpu%d: failed creating freq table[%d]\n",
 				__func__, policy->cpu, result);
 		goto fail_ck;
-- 
1.7.9.5
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