ath9k: remove permissions from debugfs files
Don't allow users to open debugfs files, because it can cause oopses.
When a user opens some file, driver unlinks it and frees the
corresponding structure, we will dereference freed memory.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c
index 6d20725..9f99f00 100644
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -500,31 +500,31 @@
goto err;
sc->debug.debugfs_debug = debugfs_create_file("debug",
- S_IRUGO | S_IWUSR, sc->debug.debugfs_phy, sc, &fops_debug);
+ S_IRUSR | S_IWUSR, sc->debug.debugfs_phy, sc, &fops_debug);
if (!sc->debug.debugfs_debug)
goto err;
- sc->debug.debugfs_dma = debugfs_create_file("dma", S_IRUGO,
+ sc->debug.debugfs_dma = debugfs_create_file("dma", S_IRUSR,
sc->debug.debugfs_phy, sc, &fops_dma);
if (!sc->debug.debugfs_dma)
goto err;
sc->debug.debugfs_interrupt = debugfs_create_file("interrupt",
- S_IRUGO,
+ S_IRUSR,
sc->debug.debugfs_phy,
sc, &fops_interrupt);
if (!sc->debug.debugfs_interrupt)
goto err;
sc->debug.debugfs_rcstat = debugfs_create_file("rcstat",
- S_IRUGO,
+ S_IRUSR,
sc->debug.debugfs_phy,
sc, &fops_rcstat);
if (!sc->debug.debugfs_rcstat)
goto err;
sc->debug.debugfs_wiphy = debugfs_create_file(
- "wiphy", S_IRUGO | S_IWUSR, sc->debug.debugfs_phy, sc,
+ "wiphy", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy, sc,
&fops_wiphy);
if (!sc->debug.debugfs_wiphy)
goto err;