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coresight: dynamic-replicator: Clean up error handling 

We fail to disable the clock in case of a failure during the
probe. Clean this up. Also, we are supposed to drop the pm reference
only when the probing is successful.

Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Suzuki K Poulose 2019-04-25 13:52:42 -06:00 committed by Greg Kroah-Hartman
parent 08be874775
commit ee8146aad8
1 changed files with 16 additions and 8 deletions
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24
drivers/hwtracing/coresight/coresight-dynamic-replicator.c
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@ -150,7 +150,7 @@ static const struct attribute_group *replicator_groups[] = {
static int replicator_probe(struct amba_device *adev, const struct amba_id *id)
{
int ret;
int ret = 0;
struct device *dev = &adev->dev;
struct resource *res = &adev->res;
struct coresight_platform_data *pdata = NULL;
@ -180,12 +180,13 @@ static int replicator_probe(struct amba_device *adev, const struct amba_id *id)
/* Validity for the resource is already checked by the AMBA core */
base = devm_ioremap_resource(dev, res);
if (IS_ERR(base))
return PTR_ERR(base);
if (IS_ERR(base)) {
ret = PTR_ERR(base);
goto out_disable_clk;
}
drvdata->base = base;
dev_set_drvdata(dev, drvdata);
pm_runtime_put(&adev->dev);
desc.type = CORESIGHT_DEV_TYPE_LINK;
desc.subtype.link_subtype = CORESIGHT_DEV_SUBTYPE_LINK_SPLIT;
@ -195,11 +196,18 @@ static int replicator_probe(struct amba_device *adev, const struct amba_id *id)
desc.groups = replicator_groups;
drvdata->csdev = coresight_register(&desc);
if (!IS_ERR(drvdata->csdev)) {
replicator_reset(drvdata);
return 0;
if (IS_ERR(drvdata->csdev)) {
ret = PTR_ERR(drvdata->csdev);
goto out_disable_clk;
}
return PTR_ERR(drvdata->csdev);
replicator_reset(drvdata);
pm_runtime_put(&adev->dev);
out_disable_clk:
if (ret && !IS_ERR_OR_NULL(drvdata->atclk))
clk_disable_unprepare(drvdata->atclk);
return ret;
}
#ifdef CONFIG_PM