This patch moves data allocated using kzalloc to managed data allocated
using devm_kzalloc and cleans now unnecessary kfrees in probe and remove
functions. Also, the unnecesary labels are removed and linux/device.h is
added to make sure the devm_*() routine declarations are unambiguously
available.
The following Coccinelle semantic patch was used for making the change:
@platform@
identifier p, probefn, removefn;
@@
struct platform_driver p = {
.probe = probefn,
.remove = removefn,
};
@prb@
identifier platform.probefn, pdev;
expression e, e1, e2;
@@
probefn(struct platform_device *pdev, ...) {
<+...
- e = kzalloc(e1, e2)
+ e = devm_kzalloc(&pdev->dev, e1, e2)
...
?-kfree(e);
...+>
}
@rem depends on prb@
identifier platform.removefn;
expression e;
@@
removefn(...) {
<...
- kfree(e);
...>
}
Signed-off-by: Himangi Saraogi <[email protected]>
Acked-by: Julia Lawall <[email protected]>
---
drivers/usb/musb/tusb6010.c | 16 +++++-----------
1 file changed, 5 insertions(+), 11 deletions(-)
diff --git a/drivers/usb/musb/tusb6010.c b/drivers/usb/musb/tusb6010.c
index 159ef4b..7dfc6cb 100644
--- a/drivers/usb/musb/tusb6010.c
+++ b/drivers/usb/musb/tusb6010.c
@@ -22,6 +22,7 @@
#include <linux/usb.h>
#include <linux/irq.h>
#include <linux/io.h>
+#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
#include <linux/usb/usb_phy_generic.h>
@@ -1160,12 +1161,12 @@ static int tusb_probe(struct platform_device *pdev)
struct platform_device *musb;
struct tusb6010_glue *glue;
struct platform_device_info pinfo;
- int ret = -ENOMEM;
+ int ret;
- glue = kzalloc(sizeof(*glue), GFP_KERNEL);
+ glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);
if (!glue) {
dev_err(&pdev->dev, "failed to allocate glue context\n");
- goto err0;
+ return -ENOMEM;
}
glue->dev = &pdev->dev;
@@ -1204,16 +1205,10 @@ static int tusb_probe(struct platform_device *pdev)
if (IS_ERR(musb)) {
ret = PTR_ERR(musb);
dev_err(&pdev->dev, "failed to register musb device: %d\n", ret);
- goto err3;
+ return ret;
}
return 0;
-
-err3:
- kfree(glue);
-
-err0:
- return ret;
}
static int tusb_remove(struct platform_device *pdev)
@@ -1222,7 +1217,6 @@ static int tusb_remove(struct platform_device *pdev)
platform_device_unregister(glue->musb);
usb_phy_generic_unregister(glue->phy);
- kfree(glue);
return 0;
}
--
1.9.1