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Subject[PATCH v2] coresight: etm4x: return 0 instead of using local ret variable
Date
The function etm4_remove_dev() always return 0, and the former function
etm4_remove has been changed to void in commit 3fd269e74f2fe ("amba: Make
the remove callback return void"). But now its changed back to int type
for some reason, which is different to the stable branch linux-5.10.y.

Just let it return void and return 0 directly in it's caller function
etm4_remove_platform_dev.

Signed-off-by: Shile Zhang <shile.zhang@linux.alibaba.com>
---
v2: re-work the commit log from Mathieu's suggestion.
v1: https://lore.kernel.org/linux-arm-kernel/20220421164217.GB1596562@p14s/T/
---
drivers/hwtracing/coresight/coresight-etm4x-core.c | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c
index 7f416a12000eb..141f8209a152a 100644
--- a/drivers/hwtracing/coresight/coresight-etm4x-core.c
+++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c
@@ -2104,7 +2104,7 @@ static void clear_etmdrvdata(void *info)
etmdrvdata[cpu] = NULL;
}

-static int __exit etm4_remove_dev(struct etmv4_drvdata *drvdata)
+static void __exit etm4_remove_dev(struct etmv4_drvdata *drvdata)
{
etm_perf_symlink(drvdata->csdev, false);
/*
@@ -2125,8 +2125,6 @@ static int __exit etm4_remove_dev(struct etmv4_drvdata *drvdata)

cscfg_unregister_csdev(drvdata->csdev);
coresight_unregister(drvdata->csdev);
-
- return 0;
}

static void __exit etm4_remove_amba(struct amba_device *adev)
@@ -2139,13 +2137,14 @@ static void __exit etm4_remove_amba(struct amba_device *adev)

static int __exit etm4_remove_platform_dev(struct platform_device *pdev)
{
- int ret = 0;
struct etmv4_drvdata *drvdata = dev_get_drvdata(&pdev->dev);

if (drvdata)
- ret = etm4_remove_dev(drvdata);
+ etm4_remove_dev(drvdata);
+
pm_runtime_disable(&pdev->dev);
- return ret;
+
+ return 0;
}

static const struct amba_id etm4_ids[] = {
--
2.33.0.rc2
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