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USB: fix memory leak in cdc-acm

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This fixes a memory leak on disconnect in cdc-acm

Thanks to 施金前 for finding it.

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Oliver Neukum 2008-10-21 10:39:04 +02:00 committed by Greg Kroah-Hartman
parent e8fab4ce76
commit a496c64f13
1 changed files with 2 additions and 1 deletions
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3
drivers/usb/class/cdc-acm.c
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@ -849,9 +849,10 @@ static void acm_write_buffers_free(struct acm *acm)
{
int i;
struct acm_wb *wb;
struct usb_device *usb_dev = interface_to_usbdev(acm->control);
for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) {
usb_buffer_free(acm->dev, acm->writesize, wb->buf, wb->dmah);
usb_buffer_free(usb_dev, acm->writesize, wb->buf, wb->dmah);
}
}