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[PATCH] usb: kfree() cleanups in drivers/usb/core/devio.c 

Checking for NULL before calling kfree() is redundant. This patch removes
these redundant checks and also makes a few tiny whitespace changes.

Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Jesper Juhl 2005-04-18 17:39:33 -07:00 committed by Greg K-H
parent acbb36f116
commit 6fd19f4b55
1 changed files with 12 additions and 20 deletions
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32
drivers/usb/core/devio.c
View File

@ -213,12 +213,10 @@ static struct async *alloc_async(unsigned int numisoframes)
static void free_async(struct async *as)
{
if (as->urb->transfer_buffer)
kfree(as->urb->transfer_buffer);
if (as->urb->setup_packet)
kfree(as->urb->setup_packet);
kfree(as->urb->transfer_buffer);
kfree(as->urb->setup_packet);
usb_free_urb(as->urb);
kfree(as);
kfree(as);
}
static inline void async_newpending(struct async *as)
@ -938,17 +936,13 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
return -EINVAL;
}
if (!(as = alloc_async(uurb->number_of_packets))) {
if (isopkt)
kfree(isopkt);
if (dr)
kfree(dr);
kfree(isopkt);
kfree(dr);
return -ENOMEM;
}
if (!(as->urb->transfer_buffer = kmalloc(uurb->buffer_length, GFP_KERNEL))) {
if (isopkt)
kfree(isopkt);
if (dr)
kfree(dr);
kfree(isopkt);
kfree(dr);
free_async(as);
return -ENOMEM;
}
@ -967,8 +961,7 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
as->urb->iso_frame_desc[u].length = isopkt[u].length;
totlen += isopkt[u].length;
}
if (isopkt)
kfree(isopkt);
kfree(isopkt);
as->ps = ps;
as->userurb = arg;
if (uurb->endpoint & USB_DIR_IN)
@ -1237,7 +1230,7 @@ static int proc_ioctl (struct dev_state *ps, void __user *arg)
return -ENOMEM;
if ((_IOC_DIR(ctrl.ioctl_code) & _IOC_WRITE)) {
if (copy_from_user (buf, ctrl.data, size)) {
kfree (buf);
kfree(buf);
return -EFAULT;
}
} else {
@ -1246,8 +1239,7 @@ static int proc_ioctl (struct dev_state *ps, void __user *arg)
}
if (!connected(ps->dev)) {
if (buf)
kfree(buf);
kfree(buf);
return -ENODEV;
}
@ -1309,8 +1301,8 @@ static int proc_ioctl (struct dev_state *ps, void __user *arg)
&& size > 0
&& copy_to_user (ctrl.data, buf, size) != 0)
retval = -EFAULT;
if (buf != NULL)
kfree (buf);
kfree(buf);
return retval;
}