iwlwifi: Fix null pointer referencing in iwl_dbgfs_rx_queue_read.
Test for null pointer prior to access. Print "Not Allocated" if null pointer. Signed-off-by: Dor Shaish <dor.shaish@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
This commit is contained in:
parent
f4989d9bef
commit
f5cc6a224d
|
@ -1018,8 +1018,13 @@ static ssize_t iwl_dbgfs_rx_queue_read(struct file *file,
|
||||||
rxq->write);
|
rxq->write);
|
||||||
pos += scnprintf(buf + pos, bufsz - pos, "free_count: %u\n",
|
pos += scnprintf(buf + pos, bufsz - pos, "free_count: %u\n",
|
||||||
rxq->free_count);
|
rxq->free_count);
|
||||||
|
if (rxq->rb_stts) {
|
||||||
pos += scnprintf(buf + pos, bufsz - pos, "closed_rb_num: %u\n",
|
pos += scnprintf(buf + pos, bufsz - pos, "closed_rb_num: %u\n",
|
||||||
le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF);
|
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);
|
return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
Loading…
Reference in New Issue