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Commit a496c64f authored by Oliver Neukum's avatar Oliver Neukum Committed by Greg Kroah-Hartman
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USB: fix memory leak in cdc-acm 



This fixes a memory leak on disconnect in cdc-acm

Thanks to 施金前 for finding it.

Signed-off-by: default avatarOliver Neukum <oneukum@suse.de>
Cc: stable <stable@kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent e8fab4ce

drivers/usb/class/cdc-acm.c

+2 −1
Original line number Diff line number Diff line
@@ -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);

	}

}