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Message-ID: <20240825135001.48963-1-krzysztof.kozlowski@linaro.org>
Date: Sun, 25 Aug 2024 15:50:00 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Vladimir Zapolskiy <vz@...ia.com>,
Krzysztof Kozlowski <krzk@...nel.org>,
Miquel Raynal <miquel.raynal@...tlin.com>,
Michal Simek <michal.simek@....com>,
linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
Jonathan Cameron <Jonathan.Cameron@...wei.com>
Subject: [PATCH 1/2] memory: pl172: simplify releasing AMBA regions with devm
Use devm_add_action_or_reset() and dev_err_probe() to make the probe()
error handling simpler around amba_release_regions() cleanup. This
allows to drop the remove() callback entirely.
Suggested-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
drivers/memory/pl172.c | 28 +++++++++++++---------------
1 file changed, 13 insertions(+), 15 deletions(-)
diff --git a/drivers/memory/pl172.c b/drivers/memory/pl172.c
index db5fbee34077..be7ba599cccf 100644
--- a/drivers/memory/pl172.c
+++ b/drivers/memory/pl172.c
@@ -187,6 +187,13 @@ static int pl172_parse_cs_config(struct amba_device *adev,
return -EINVAL;
}
+static void pl172_amba_release_regions(void *data)
+{
+ struct amba_device *adev = data;
+
+ amba_release_regions(adev);
+}
+
static const char * const pl172_revisions[] = {"r1", "r2", "r2p3", "r2p4"};
static const char * const pl175_revisions[] = {"r1"};
static const char * const pl176_revisions[] = {"r0"};
@@ -232,13 +239,14 @@ static int pl172_probe(struct amba_device *adev, const struct amba_id *id)
return ret;
}
+ ret = devm_add_action_or_reset(dev, pl172_amba_release_regions, adev);
+ if (ret)
+ return ret;
+
pl172->base = devm_ioremap(dev, adev->res.start,
resource_size(&adev->res));
- if (!pl172->base) {
- dev_err(dev, "ioremap failed\n");
- ret = -ENOMEM;
- goto err_no_ioremap;
- }
+ if (!pl172->base)
+ return dev_err_probe(dev, -ENOMEM, "ioremap failed\n");
amba_set_drvdata(adev, pl172);
@@ -256,15 +264,6 @@ static int pl172_probe(struct amba_device *adev, const struct amba_id *id)
}
return 0;
-
-err_no_ioremap:
- amba_release_regions(adev);
- return ret;
-}
-
-static void pl172_remove(struct amba_device *adev)
-{
- amba_release_regions(adev);
}
static const struct amba_id pl172_ids[] = {
@@ -292,7 +291,6 @@ static struct amba_driver pl172_driver = {
.name = "memory-pl172",
},
.probe = pl172_probe,
- .remove = pl172_remove,
.id_table = pl172_ids,
};
module_amba_driver(pl172_driver);
--
2.43.0
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