diff options
| -rw-r--r-- | drivers/char/diag/diag_masks.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/char/diag/diag_masks.c b/drivers/char/diag/diag_masks.c index a1721a3b80cc..44e71a704e6a 100644 --- a/drivers/char/diag/diag_masks.c +++ b/drivers/char/diag/diag_masks.c @@ -1,4 +1,4 @@ -/* Copyright (c) 2008-2016, The Linux Foundation. All rights reserved. +/* Copyright (c) 2008-2017, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and @@ -112,10 +112,12 @@ static void diag_send_log_mask_update(uint8_t peripheral, int equip_id) else mask_info = &log_mask; - if (!mask_info) + if (!mask_info || !mask_info->ptr || !mask_info->update_buf) return; mask = (struct diag_log_mask_t *)mask_info->ptr; + if (!mask->ptr) + return; buf = mask_info->update_buf; switch (mask_info->status) { @@ -224,7 +226,7 @@ static void diag_send_event_mask_update(uint8_t peripheral) else mask_info = &event_mask; - if (!mask_info) + if (!mask_info || !mask_info->ptr || !mask_info->update_buf) return; buf = mask_info->update_buf; @@ -305,10 +307,12 @@ static void diag_send_msg_mask_update(uint8_t peripheral, int first, int last) else mask_info = &msg_mask; - if (!mask_info) + if (!mask_info || !mask_info->ptr || !mask_info->update_buf) return; mask = (struct diag_msg_mask_t *)mask_info->ptr; + if (!mask->ptr) + return; buf = mask_info->update_buf; mutex_lock(&mask_info->lock); switch (mask_info->status) { |