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MIPS: SEAD3: Introduce the use of the managed version of kzalloc

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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 now unnecessary labels out_mem and out are done
away with. The error handling code is moved under if and return 0 is now
at the end of the function.

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 <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Tested-by: Markos Chandras <markos.chandras@imgtec.com>
Reviewed-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/6977/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Himangi Saraogi 2014-05-20 23:39:42 +05:30 committed by Ralf Baechle
parent acd8bc1a70
commit bfb7971c30
1 changed files with 13 additions and 23 deletions
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36
arch/mips/mti-sead3/sead3-pic32-i2c-drv.c
View File

@ -312,16 +312,13 @@ static int i2c_platform_probe(struct platform_device *pdev)
pr_debug("i2c_platform_probe\n");
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!r) {
ret = -ENODEV;
goto out;
}
if (!r)
return -ENODEV;
priv = kzalloc(sizeof(struct i2c_platform_data), GFP_KERNEL);
if (!priv) {
ret = -ENOMEM;
goto out;
}
priv = devm_kzalloc(&pdev->dev, sizeof(struct i2c_platform_data),
GFP_KERNEL);
if (!priv)
return -ENOMEM;
/* FIXME: need to allocate resource in PIC32 space */
#if 0
@ -330,10 +327,8 @@ static int i2c_platform_probe(struct platform_device *pdev)
#else
priv->base = r->start;
#endif
if (!priv->base) {
ret = -EBUSY;
goto out_mem;
}
if (!priv->base)
return -EBUSY;
priv->xfer_timeout = 200;
priv->ack_timeout = 200;
@ -348,17 +343,13 @@ static int i2c_platform_probe(struct platform_device *pdev)
i2c_platform_setup(priv);
ret = i2c_add_numbered_adapter(&priv->adap);
if (ret == 0) {
platform_set_drvdata(pdev, priv);
return 0;
if (ret) {
i2c_platform_disable(priv);
return ret;
}
i2c_platform_disable(priv);
out_mem:
kfree(priv);
out:
return ret;
platform_set_drvdata(pdev, priv);
return 0;
}
static int i2c_platform_remove(struct platform_device *pdev)
@ -369,7 +360,6 @@ static int i2c_platform_remove(struct platform_device *pdev)
platform_set_drvdata(pdev, NULL);
i2c_del_adapter(&priv->adap);
i2c_platform_disable(priv);
kfree(priv);
return 0;
}