From: Dor Shaish <dor.shaish@xxxxxxxxx>
Test for null pointer prior to access.
Print "Not Allocated" if null pointer.
Signed-off-by: Dor Shaish <dor.shaish@xxxxxxxxx>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
Signed-off-by: Reinette Chatre <reinette.chatre@xxxxxxxxx>
---
drivers/net/wireless/iwlwifi/iwl-debugfs.c | 7 ++++++-
1 files changed, 6 insertions(+), 1 deletions(-)
diff --git a/drivers/net/wireless/iwlwifi/iwl-debugfs.c b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
index d9f21bb..cee3d12 100644
--- a/drivers/net/wireless/iwlwifi/iwl-debugfs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
@@ -1018,8 +1018,13 @@ static ssize_t iwl_dbgfs_rx_queue_read(struct file *file,
rxq->write);
pos += scnprintf(buf + pos, bufsz - pos, "free_count: %u\n",
rxq->free_count);
- pos += scnprintf(buf + pos, bufsz - pos, "closed_rb_num: %u\n",
+ if (rxq->rb_stts) {
+ pos += scnprintf(buf + pos, bufsz - pos, "closed_rb_num: %u\n",
le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF);
+ } else {
+ pos += scnprintf(buf + pos, bufsz - pos,
+ "closed_rb_num: Not Allocated\n");
+ }
return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}
--
1.7.0.4
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