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usb: writing_usb_driver free urb cleanup

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Allright. As Greg KH suggested I split this big patch into smaller ones to
make the changes easier to review. Having no better idea how to split that I 
split it on a 'patch per file' basis. All those patches clean redundant 'if' before 
usb_unlink/free/kill_urb():

if (urb)
	usb_free_urb(urb); /* unlink / free / kill */

I decided not to touch bigger 'if's like 

if (urb) {
	usb_kill_urb(urb);
	usb_free_urb(urb);
	urb = NULL;
}

as that would be probably too intrusive. One of patches also fixes 
drivers/usb/misc/auerswald.c memleak I found when digging the code. All those
patches are against 2.6.19-rc4.

Signed-off-by: Mariusz Kozlowski <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Mariusz Kozlowski 2006-11-08 15:33:38 +01:00 • committed by Greg Kroah-Hartman
commit 3c8961ee6d
1 changed files with 1 additions and 2 deletions
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3
Documentation/DocBook/writing_usb_driver.tmpl
View file

@ -345,8 +345,7 @@ static inline void skel_delete (struct usb_skel *dev)
usb_buffer_free (dev->udev, dev->bulk_out_size,
dev->bulk_out_buffer,
dev->write_urb->transfer_dma);
if (dev->write_urb != NULL)
usb_free_urb (dev->write_urb);
usb_free_urb (dev->write_urb);
kfree (dev);
}
</programlisting>