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can: ems_usb: Improved memory handling on ems_usb_start 

Do not return from ems_usb_start if allocation fails. If not all URBs
could be allocated use the one already submitted.

Signed-off-by: Sebastian Haas <dev@sebastianhaas.info>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Sebastian Haas 2011-12-22 23:58:34 +01:00 committed by Marc Kleine-Budde
parent 9a12349663
commit 2ee6850ca0
1 changed files with 4 additions and 2 deletions
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6
drivers/net/can/usb/ems_usb.c
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@ -607,7 +607,8 @@ static int ems_usb_start(struct ems_usb *dev)
if (!urb) {
dev_err(netdev->dev.parent,
"No memory left for URBs\n");
return -ENOMEM;
err = -ENOMEM;
break;
}
buf = usb_alloc_coherent(dev->udev, RX_BUFFER_SIZE, GFP_KERNEL,
@ -616,7 +617,8 @@ static int ems_usb_start(struct ems_usb *dev)
dev_err(netdev->dev.parent,
"No memory left for USB buffer\n");
usb_free_urb(urb);
return -ENOMEM;
err = -ENOMEM;
break;
}
usb_fill_bulk_urb(urb, dev->udev, usb_rcvbulkpipe(dev->udev, 2),