From: Emil Goode <emilgoode@gmail.com>
To: dwmw2@infradead.org, artem.bityutskiy@linux.intel.com,
wfp5p@virginia.edu, gregkh@linuxfoundation.org,
thierry.reding@avionic-design.de
Cc: kernel-janitors@vger.kernel.org, Emil Goode <emilgoode@gmail.com>,
linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: [PATCH] mtd: lantiq-flash: Convert to devm_kzalloc
Date: Thu, 30 May 2013 15:00:36 +0000 [thread overview]
Message-ID: <1369926036-2416-1-git-send-email-emilgoode@gmail.com> (raw)
The ltq_mtd_probe function is missing some error handling for
memory allocation failure. This patch fixes that and simplifies
the code by converting to devm_kzalloc.
Signed-off-by: Emil Goode <emilgoode@gmail.com>
---
drivers/mtd/maps/lantiq-flash.c | 31 +++++++++++++++----------------
1 file changed, 15 insertions(+), 16 deletions(-)
diff --git a/drivers/mtd/maps/lantiq-flash.c b/drivers/mtd/maps/lantiq-flash.c
index d7ac65d..de0ac1e 100644
--- a/drivers/mtd/maps/lantiq-flash.c
+++ b/drivers/mtd/maps/lantiq-flash.c
@@ -123,24 +123,28 @@ ltq_mtd_probe(struct platform_device *pdev)
return -ENODEV;
}
- ltq_mtd = kzalloc(sizeof(struct ltq_mtd), GFP_KERNEL);
+ ltq_mtd = devm_kzalloc(&pdev->dev, sizeof(struct ltq_mtd), GFP_KERNEL);
+ if (!ltq_mtd)
+ return -ENOMEM;
+
platform_set_drvdata(pdev, ltq_mtd);
ltq_mtd->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!ltq_mtd->res) {
dev_err(&pdev->dev, "failed to get memory resource\n");
- err = -ENOENT;
- goto err_out;
+ return -ENOENT;
}
- ltq_mtd->map = kzalloc(sizeof(struct map_info), GFP_KERNEL);
+ ltq_mtd->map = devm_kzalloc(&pdev->dev, sizeof(struct map_info),
+ GFP_KERNEL);
+ if (!ltq_mtd->map)
+ return -ENOMEM;
+
ltq_mtd->map->phys = ltq_mtd->res->start;
ltq_mtd->map->size = resource_size(ltq_mtd->res);
ltq_mtd->map->virt = devm_ioremap_resource(&pdev->dev, ltq_mtd->res);
- if (IS_ERR(ltq_mtd->map->virt)) {
- err = PTR_ERR(ltq_mtd->map->virt);
- goto err_out;
- }
+ if (IS_ERR(ltq_mtd->map->virt))
+ return PTR_ERR(ltq_mtd->map->virt);
ltq_mtd->map->name = ltq_map_name;
ltq_mtd->map->bankwidth = 2;
@@ -155,8 +159,7 @@ ltq_mtd_probe(struct platform_device *pdev)
if (!ltq_mtd->mtd) {
dev_err(&pdev->dev, "probing failed\n");
- err = -ENXIO;
- goto err_free;
+ return -ENXIO;
}
ltq_mtd->mtd->owner = THIS_MODULE;
@@ -177,10 +180,7 @@ ltq_mtd_probe(struct platform_device *pdev)
err_destroy:
map_destroy(ltq_mtd->mtd);
-err_free:
- kfree(ltq_mtd->map);
-err_out:
- kfree(ltq_mtd);
+
return err;
}
@@ -194,9 +194,8 @@ ltq_mtd_remove(struct platform_device *pdev)
mtd_device_unregister(ltq_mtd->mtd);
map_destroy(ltq_mtd->mtd);
}
- kfree(ltq_mtd->map);
- kfree(ltq_mtd);
}
+
return 0;
}
--
1.7.10.4
reply other threads:[~2013-05-30 15:00 UTC|newest]
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