diff options
| author | Maksim Salau <maksim.salau@gmail.com> | 2017-05-02 14:47:53 +0300 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> | 2017-05-02 14:47:53 +0300 |
| commit | 45f580c42e5c125d55dbd8099750a1998de3d917 (patch) | |
| tree | 6f714bd1b697975d6875994dd1c89a64bda86702 /drivers/video | |
| parent | 3bbb5b8234161db431992e5d1f8b7cb88ad9dec3 (diff) | |
| download | linux-45f580c42e5c125d55dbd8099750a1998de3d917.tar.xz | |
video: fbdev: udlfb: Fix buffer on stack
Allocate buffers on HEAP instead of STACK for local array
that is to be sent using usb_control_msg().
Signed-off-by: Maksim Salau <maksim.salau@gmail.com>
Cc: Bernie Thompson <bernie@plugable.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/fbdev/udlfb.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/video/fbdev/udlfb.c b/drivers/video/fbdev/udlfb.c index e9c2f7ba3c8e..6a3c353de7c3 100644 --- a/drivers/video/fbdev/udlfb.c +++ b/drivers/video/fbdev/udlfb.c @@ -1487,15 +1487,25 @@ static struct device_attribute fb_device_attrs[] = { static int dlfb_select_std_channel(struct dlfb_data *dev) { int ret; - u8 set_def_chn[] = { 0x57, 0xCD, 0xDC, 0xA7, + void *buf; + static const u8 set_def_chn[] = { + 0x57, 0xCD, 0xDC, 0xA7, 0x1C, 0x88, 0x5E, 0x15, 0x60, 0xFE, 0xC6, 0x97, 0x16, 0x3D, 0x47, 0xF2 }; + buf = kmemdup(set_def_chn, sizeof(set_def_chn), GFP_KERNEL); + + if (!buf) + return -ENOMEM; + ret = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), NR_USB_REQUEST_CHANNEL, (USB_DIR_OUT | USB_TYPE_VENDOR), 0, 0, - set_def_chn, sizeof(set_def_chn), USB_CTRL_SET_TIMEOUT); + buf, sizeof(set_def_chn), USB_CTRL_SET_TIMEOUT); + + kfree(buf); + return ret; } |