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fix for a memory leak in an error case introduced by fix for double free 

The fix NULLed a pointer without freeing it.

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Reported-by: Juha Motorsportcom <juha_motorsportcom@luukku.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Oliver Neukum 2008-07-26 22:42:42 +02:00 committed by Linus Torvalds
parent 9ee08c2df4
commit 852fef69c0
1 changed files with 8 additions and 6 deletions
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14
drivers/usb/serial/ipaq.c
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@ -651,15 +651,17 @@ static int ipaq_open(struct tty_struct *tty,
*/
kfree(port->bulk_in_buffer);
port->bulk_in_buffer = kmalloc(URBDATA_SIZE, GFP_KERNEL);
if (port->bulk_in_buffer == NULL) {
port->bulk_out_buffer = NULL; /* prevent double free */
goto enomem;
}
kfree(port->bulk_out_buffer);
/* make sure the generic serial code knows */
port->bulk_out_buffer = NULL;
port->bulk_in_buffer = kmalloc(URBDATA_SIZE, GFP_KERNEL);
if (port->bulk_in_buffer == NULL)
goto enomem;
port->bulk_out_buffer = kmalloc(URBDATA_SIZE, GFP_KERNEL);
if (port->bulk_out_buffer == NULL) {
/* the buffer is useless, free it */
kfree(port->bulk_in_buffer);
port->bulk_in_buffer = NULL;
goto enomem;