diff options
| author | Suzuki K Poulose <suzuki.poulose@arm.com> | 2019-04-25 21:52:42 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-25 22:00:15 +0200 |
| commit | ee8146aad87cd8eeb5963856ac0b9a9176392e3a (patch) | |
| tree | f16719e64f85a7a3534af32a6f92472df1e7a065 /drivers/hwtracing | |
| parent | coresight: tmc: Report DMA setup failures (diff) | |
| download | linux-ee8146aad87cd8eeb5963856ac0b9a9176392e3a.tar.xz linux-ee8146aad87cd8eeb5963856ac0b9a9176392e3a.zip | |
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>
Diffstat (limited to 'drivers/hwtracing')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-dynamic-replicator.c | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/drivers/hwtracing/coresight/coresight-dynamic-replicator.c b/drivers/hwtracing/coresight/coresight-dynamic-replicator.c index 299667b887fc..fe176b987685 100644 --- a/drivers/hwtracing/coresight/coresight-dynamic-replicator.c +++ b/drivers/hwtracing/coresight/coresight-dynamic-replicator.c @@ -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 |