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drm/panfrost: Add missing check for pfdev->regulator 

When modifying panfrost_devfreq_target() to support a device without a
regulator defined I missed the check on the error path. Let's add it.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: e21dd29088 ("drm/panfrost: Enable devfreq to work without regulator")
Signed-off-by: Steven Price <steven.price@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190822093218.26014-1-steven.price@arm.com
This commit is contained in:
Steven Price 2019-08-22 10:32:18 +01:00 committed by Rob Herring
parent 578d2342ec
commit c90f30812a
1 changed files with 4 additions and 2 deletions
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6
drivers/gpu/drm/panfrost/panfrost_devfreq.c
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@ -53,8 +53,10 @@ static int panfrost_devfreq_target(struct device *dev, unsigned long *freq,
if (err) {
dev_err(dev, "Cannot set frequency %lu (%d)\n", target_rate,
err);
regulator_set_voltage(pfdev->regulator, pfdev->devfreq.cur_volt,
pfdev->devfreq.cur_volt);
if (pfdev->regulator)
regulator_set_voltage(pfdev->regulator,
pfdev->devfreq.cur_volt,
pfdev->devfreq.cur_volt);
return err;
}