From 08c6100967103a26f4cf58b404205747733a8018 Mon Sep 17 00:00:00 2001 From: Ray Chen <raychen@qca.qualcomm.com> Date: Thu, 12 Apr 2012 20:48:34 +0800 Subject: [PATCH] ath6kl: Fix system crash sometimes for USB hotplug 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> --- drivers/net/wireless/ath/ath6kl/usb.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/net/wireless/ath/ath6kl/usb.c b/drivers/net/wireless/ath/ath6kl/usb.c index 73aacdd047ca..dfbbe9e7ff75 100644 --- a/drivers/net/wireless/ath/ath6kl/usb.c +++ b/drivers/net/wireless/ath/ath6kl/usb.c @@ -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 */ -- 2.30.9