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staging: comedi: Remove NULL check before kfree

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This patch was generated by the following semantic patch:
// <smpl>
@@ expression E; @@
- if (E != NULL) { kfree(E); }
+ kfree(E);

@@ expression E; @@
- if (E != NULL) { kfree(E); E = NULL; }
+ kfree(E);
+ E = NULL;
// </smpl>

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Ilia Mirkin 2011-03-13 00:28:57 -05:00 committed by Greg Kroah-Hartman
parent 46d994b1f5
commit e4e1f289be
6 changed files with 9 additions and 28 deletions
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7
drivers/staging/comedi/drivers/8255.c
View File

@ -383,15 +383,8 @@ EXPORT_SYMBOL(subdev_8255_init_irq);
void subdev_8255_cleanup(struct comedi_device *dev, struct comedi_subdevice *s)
{
if (s->private) {
/* this test does nothing, so comment it out
* if (subdevpriv->have_irq) {
* }
*/
kfree(s->private);
}
}
EXPORT_SYMBOL(subdev_8255_cleanup);
/*

2
drivers/staging/comedi/drivers/das16.c
View File

@ -1695,9 +1695,7 @@ static int das16_detach(struct comedi_device *dev)
}
if (devpriv->dma_chan)
free_dma(devpriv->dma_chan);
if (devpriv->user_ai_range_table)
kfree(devpriv->user_ai_range_table);
if (devpriv->user_ao_range_table)
kfree(devpriv->user_ao_range_table);
}

1
drivers/staging/comedi/drivers/ni_at_a2150.c
View File

@ -479,7 +479,6 @@ static int a2150_detach(struct comedi_device *dev)
if (devpriv) {
if (devpriv->dma)
free_dma(devpriv->dma);
if (devpriv->dma_buffer)
kfree(devpriv->dma_buffer);
}

1
drivers/staging/comedi/drivers/ni_labpc.c
View File

@ -797,7 +797,6 @@ int labpc_common_detach(struct comedi_device *dev)
subdev_8255_cleanup(dev, dev->subdevices + 2);
/* only free stuff if it has been allocated by _attach */
if (devpriv->dma_buffer)
kfree(devpriv->dma_buffer);
if (devpriv->dma_chan)
free_dma(devpriv->dma_chan);

4
drivers/staging/comedi/drivers/serial2002.c
View File

@ -907,13 +907,9 @@ static int serial2002_detach(struct comedi_device *dev)
printk("comedi%d: serial2002: remove\n", dev->minor);
for (i = 0; i < 5; i++) {
s = &dev->subdevices[i];
if (s->maxdata_list) {
kfree(s->maxdata_list);
}
if (s->range_table_list) {
kfree(s->range_table_list);
}
}
return 0;
}

8
drivers/staging/comedi/drivers/usbdux.c
View File

@ -2265,12 +2265,8 @@ static void tidy_up(struct usbduxsub *usbduxsub_tmp)
usbduxsub_unlink_OutURBs(usbduxsub_tmp);
}
for (i = 0; i < usbduxsub_tmp->numOfOutBuffers; i++) {
if (usbduxsub_tmp->urbOut[i]->transfer_buffer) {
kfree(usbduxsub_tmp->
urbOut[i]->transfer_buffer);
usbduxsub_tmp->urbOut[i]->transfer_buffer =
NULL;
}
kfree(usbduxsub_tmp->urbOut[i]->transfer_buffer);
usbduxsub_tmp->urbOut[i]->transfer_buffer = NULL;
if (usbduxsub_tmp->urbOut[i]) {
usb_kill_urb(usbduxsub_tmp->urbOut[i]);
usb_free_urb(usbduxsub_tmp->urbOut[i]);