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Subject[PATCH v3 2/7] coresight: Consolidate error handling path for tmc_probe
Date
This patch cleans up the error handling path for tmc_probe
as a side effect of the removal of the spurious dma_free_coherent().

Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
---
drivers/hwtracing/coresight/coresight-tmc.c | 36 ++++++++++++++---------------
1 file changed, 17 insertions(+), 19 deletions(-)

diff --git a/drivers/hwtracing/coresight/coresight-tmc.c b/drivers/hwtracing/coresight/coresight-tmc.c
index 3978cbb..1b47258 100644
--- a/drivers/hwtracing/coresight/coresight-tmc.c
+++ b/drivers/hwtracing/coresight/coresight-tmc.c
@@ -309,22 +309,31 @@ static int tmc_probe(struct amba_device *adev, const struct amba_id *id)

if (np) {
pdata = of_get_coresight_platform_data(dev, np);
- if (IS_ERR(pdata))
- return PTR_ERR(pdata);
+ if (IS_ERR(pdata)) {
+ ret = PTR_ERR(pdata);
+ goto out;
+ }
adev->dev.platform_data = pdata;
}

+ ret = -ENOMEM;
drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL);
if (!drvdata)
- return -ENOMEM;
+ goto out;
+
+ desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL);
+ if (!desc)
+ goto out;

drvdata->dev = &adev->dev;
dev_set_drvdata(dev, drvdata);

/* 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;
+ }

drvdata->base = base;

@@ -347,12 +356,6 @@ static int tmc_probe(struct amba_device *adev, const struct amba_id *id)

pm_runtime_put(&adev->dev);

- desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL);
- if (!desc) {
- ret = -ENOMEM;
- goto err_devm_kzalloc;
- }
-
desc->pdata = pdata;
desc->dev = dev;
desc->subtype.sink_subtype = CORESIGHT_DEV_SUBTYPE_SINK_BUFFER;
@@ -373,7 +376,7 @@ static int tmc_probe(struct amba_device *adev, const struct amba_id *id)
drvdata->csdev = coresight_register(desc);
if (IS_ERR(drvdata->csdev)) {
ret = PTR_ERR(drvdata->csdev);
- goto err_devm_kzalloc;
+ goto out;
}

drvdata->miscdev.name = pdata->name;
@@ -381,13 +384,8 @@ static int tmc_probe(struct amba_device *adev, const struct amba_id *id)
drvdata->miscdev.fops = &tmc_fops;
ret = misc_register(&drvdata->miscdev);
if (ret)
- goto err_misc_register;
-
- return 0;
-
-err_misc_register:
- coresight_unregister(drvdata->csdev);
-err_devm_kzalloc:
+ coresight_unregister(drvdata->csdev);
+out:
return ret;
}

--
1.9.1
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