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| author | Larry Finger <Larry.Finger@lwfinger.net> | 2015-04-24 18:03:37 +0200 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2015-04-28 12:55:28 +0200 |
| commit | 414b7e3b9ce8b0577f613e656fdbc36b34b444dd (patch) | |
| tree | 1f28f41ff605b7e08d1be6fa40342a57fa6fbe7f /drivers | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf (diff) | |
| download | linux-414b7e3b9ce8b0577f613e656fdbc36b34b444dd.tar.xz linux-414b7e3b9ce8b0577f613e656fdbc36b34b444dd.zip | |
rtlwifi: rtl8192cu: Fix kernel deadlock
The USB mini-driver in rtlwifi, which is used by rtl8192cu, issues a call to
usb_control_msg() with a timeout value of 0. In some instances where the
interface is shutting down, this infinite wait results in a CPU deadlock. A
one second timeout fixes this problem without affecting any normal operations.
This bug is reported at https://bugzilla.novell.com/show_bug.cgi?id=927786.
Reported-by: Bernhard Wiedemann <bwiedemann@suse.com>
Tested-by: Bernhard Wiedemann <bwiedemann@suse.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@vger.kernel.org>
Cc: Bernhard Wiedemann <bwiedemann@suse.com>
Cc: Takashi Iwai<tiwai@suse.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/rtlwifi/usb.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/wireless/rtlwifi/usb.c b/drivers/net/wireless/rtlwifi/usb.c index f0188c83c79f..2721cf89fb16 100644 --- a/drivers/net/wireless/rtlwifi/usb.c +++ b/drivers/net/wireless/rtlwifi/usb.c @@ -126,7 +126,7 @@ static int _usbctrl_vendorreq_sync_read(struct usb_device *udev, u8 request, do { status = usb_control_msg(udev, pipe, request, reqtype, value, - index, pdata, len, 0); /*max. timeout*/ + index, pdata, len, 1000); if (status < 0) { /* firmware download is checksumed, don't retry */ if ((value >= FW_8192C_START_ADDRESS && |