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, linux/device.h is added to make sure the devm_*()
routine declarations are unambiguously available. Earlier, in the probe
function ctrlpriv was leaked on the failure of ctrl = of_iomap(nprop, 0);
as well as on the failure of ctrlpriv->jrpdev = kzalloc(...); . These
two bugs have been fixed by the patch.
The following Coccinelle semantic patch was used for making the change:
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]>
---
Not compile tested due to incompatible architecture.
drivers/crypto/caam/ctrl.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c
index 1c38f86..34ffc35 100644
--- a/drivers/crypto/caam/ctrl.c
+++ b/drivers/crypto/caam/ctrl.c
@@ -5,6 +5,7 @@
* Copyright 2008-2012 Freescale Semiconductor, Inc.
*/
+#include <linux/device.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
@@ -295,9 +296,6 @@ static int caam_remove(struct platform_device *pdev)
/* Unmap controller region */
iounmap(&topregs->ctrl);
- kfree(ctrlpriv->jrpdev);
- kfree(ctrlpriv);
-
return ret;
}
@@ -382,7 +380,8 @@ static int caam_probe(struct platform_device *pdev)
#endif
u64 cha_vid;
- ctrlpriv = kzalloc(sizeof(struct caam_drv_private), GFP_KERNEL);
+ ctrlpriv = devm_kzalloc(&pdev->dev, sizeof(struct caam_drv_private),
+ GFP_KERNEL);
if (!ctrlpriv)
return -ENOMEM;
@@ -432,8 +431,9 @@ static int caam_probe(struct platform_device *pdev)
of_device_is_compatible(np, "fsl,sec4.0-job-ring"))
rspec++;
- ctrlpriv->jrpdev = kzalloc(sizeof(struct platform_device *) * rspec,
- GFP_KERNEL);
+ ctrlpriv->jrpdev = devm_kzalloc(&pdev->dev,
+ sizeof(struct platform_device *) * rspec,
+ GFP_KERNEL);
if (ctrlpriv->jrpdev == NULL) {
iounmap(&topregs->ctrl);
return -ENOMEM;
--
1.9.1
On Tuesday, May 27, 2014 at 08:25:48 PM, Himangi Saraogi wrote:
> 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, linux/device.h is added to make sure the devm_*()
> routine declarations are unambiguously available. Earlier, in the probe
> function ctrlpriv was leaked on the failure of ctrl = of_iomap(nprop, 0);
> as well as on the failure of ctrlpriv->jrpdev = kzalloc(...); . These
> two bugs have been fixed by the patch.
>
> The following Coccinelle semantic patch was used for making the change:
Reviewed-by: Marek Vasut <[email protected]>
Best regards,
Marek Vasut
On Sun, Jun 01, 2014 at 06:56:41PM +0200, Marek Vasut wrote:
> On Tuesday, May 27, 2014 at 08:25:48 PM, Himangi Saraogi wrote:
> > 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, linux/device.h is added to make sure the devm_*()
> > routine declarations are unambiguously available. Earlier, in the probe
> > function ctrlpriv was leaked on the failure of ctrl = of_iomap(nprop, 0);
> > as well as on the failure of ctrlpriv->jrpdev = kzalloc(...); . These
> > two bugs have been fixed by the patch.
> >
> > The following Coccinelle semantic patch was used for making the change:
>
> Reviewed-by: Marek Vasut <[email protected]>
Patch applied.
--
Email: Herbert Xu <[email protected]>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt