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wl12xx: fix illegal memset if debugfs is not enabled 

If we try to reset the debugfs statistics when debugfs is not configured in
the kernel, we're memset an illegal pointer, because it has never been
allocated.  So check whether we have debugfs enabled by looking into the
wl->rootdir before trying to reset the fw_stats struct.

Reported-by: Joerie de Gram <j.de.gram@gmail.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
This commit is contained in:
Luciano Coelho 2010-11-30 14:58:46 +02:00
parent d60080ae06
commit 43a598d5e4
1 changed files with 3 additions and 0 deletions
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3
drivers/net/wireless/wl12xx/debugfs.c
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@ -414,6 +414,9 @@ err:
void wl1271_debugfs_reset(struct wl1271 *wl) void wl1271_debugfs_reset(struct wl1271 *wl)
{ {
if (!wl->rootdir)
return;
memset(wl->stats.fw_stats, 0, sizeof(*wl->stats.fw_stats)); memset(wl->stats.fw_stats, 0, sizeof(*wl->stats.fw_stats));
wl->stats.retry_count = 0; wl->stats.retry_count = 0;
wl->stats.excessive_retries = 0; wl->stats.excessive_retries = 0;