diff options
| author | Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> | 2007-05-30 20:42:41 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-07-12 16:29:45 -0700 |
| commit | f6ace2c99afefb7969ccccba2fb413ad29ab2e2e (patch) | |
| tree | e8c2a22f2f2c6f2d8aec6ae6b06e623c4b686ec9 /drivers/usb/host/r8a66597-hcd.c | |
| parent | 5d3043586db428b5b4b3df89fa0c2db9731e934c (diff) | |
| download | linux-f6ace2c99afefb7969ccccba2fb413ad29ab2e2e.tar.bz2 | |
USB: r8a66597-hcd: fix NULL access
This patch fixes the problem that accesses NULL pointer
when disconnected a cable while play music with usb-speaker.
Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host/r8a66597-hcd.c')
| -rw-r--r-- | drivers/usb/host/r8a66597-hcd.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c index af13f1f2296a..a7a7070c6e2a 100644 --- a/drivers/usb/host/r8a66597-hcd.c +++ b/drivers/usb/host/r8a66597-hcd.c @@ -47,7 +47,7 @@ MODULE_DESCRIPTION("R8A66597 USB Host Controller Driver"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Yoshihiro Shimoda"); -#define DRIVER_VERSION "9 May 2007" +#define DRIVER_VERSION "29 May 2007" static const char hcd_name[] = "r8a66597_hcd"; @@ -544,6 +544,9 @@ static void pipe_toggle_restore(struct r8a66597 *r8a66597, unsigned char endpoint = usb_pipeendpoint(urb->pipe); unsigned short *toggle = get_toggle_pointer(dev, urb->pipe); + if (!toggle) + return; + r8a66597_pipe_toggle(r8a66597, pipe, *toggle & (1 << endpoint)); } |