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ath6kl: Fix system crash sometimes for USB hotplug

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System crash because of NULL pointer reference due to
cleanup_scatter is not implemented for USB.

Signed-off-by: Ray Chen <raychen@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Ray Chen 2012-04-12 20:48:34 +08:00 committed by Kalle Valo
parent cdeb860252
commit 08c6100967
1 changed files with 9 additions and 0 deletions
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9
drivers/net/wireless/ath/ath6kl/usb.c
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@ -1037,6 +1037,14 @@ static void ath6kl_usb_stop(struct ath6kl *ar)
hif_stop(ar);
}
static void ath6kl_usb_cleanup_scatter(struct ath6kl *ar)
{
/*
* USB doesn't support it. Just return.
*/
return;
}
static const struct ath6kl_hif_ops ath6kl_usb_ops = {
.diag_read32 = ath6kl_usb_diag_read32,
.diag_write32 = ath6kl_usb_diag_write32,
@ -1049,6 +1057,7 @@ static const struct ath6kl_hif_ops ath6kl_usb_ops = {
.pipe_get_default = ath6kl_usb_get_default_pipe,
.pipe_map_service = ath6kl_usb_map_service_pipe,
.pipe_get_free_queue_number = ath6kl_usb_get_free_queue_number,
.cleanup_scatter = ath6kl_usb_cleanup_scatter,
};
/* ath6kl usb driver registered functions */