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authorGreg Kroah-Hartman <gregkh@suse.de>2011-12-05 14:02:59 -0800
committerGreg Kroah-Hartman <gregkh@suse.de>2011-12-09 16:18:19 -0800
commit59bf5cf94f0fa3b08fb1258b52649077b7d0914d (patch)
tree6afee22d8bc28e388cb5be996bc33b22f7be66ef /drivers/usb/misc
parentbc677d5b64644c399cd3db6a905453e611f402ab (diff)
downloadblackbird-op-linux-59bf5cf94f0fa3b08fb1258b52649077b7d0914d.tar.gz
blackbird-op-linux-59bf5cf94f0fa3b08fb1258b52649077b7d0914d.zip
USB: isight: fix kernel bug when loading firmware
We were sending data on the stack when uploading firmware, which causes some machines fits, and is not allowed. Fix this by using the buffer we already had around for this very purpose. Reported-by: Wouter M. Koolen <wmkoolen@cwi.nl> Tested-by: Wouter M. Koolen <wmkoolen@cwi.nl> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/misc')
-rw-r--r--drivers/usb/misc/isight_firmware.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/usb/misc/isight_firmware.c b/drivers/usb/misc/isight_firmware.c
index fe1d44319d0a..8f725f651915 100644
--- a/drivers/usb/misc/isight_firmware.c
+++ b/drivers/usb/misc/isight_firmware.c
@@ -55,8 +55,9 @@ static int isight_firmware_load(struct usb_interface *intf,
ptr = firmware->data;
+ buf[0] = 0x01;
if (usb_control_msg
- (dev, usb_sndctrlpipe(dev, 0), 0xa0, 0x40, 0xe600, 0, "\1", 1,
+ (dev, usb_sndctrlpipe(dev, 0), 0xa0, 0x40, 0xe600, 0, buf, 1,
300) != 1) {
printk(KERN_ERR
"Failed to initialise isight firmware loader\n");
@@ -100,8 +101,9 @@ static int isight_firmware_load(struct usb_interface *intf,
}
}
+ buf[0] = 0x00;
if (usb_control_msg
- (dev, usb_sndctrlpipe(dev, 0), 0xa0, 0x40, 0xe600, 0, "\0", 1,
+ (dev, usb_sndctrlpipe(dev, 0), 0xa0, 0x40, 0xe600, 0, buf, 1,
300) != 1) {
printk(KERN_ERR "isight firmware loading completion failed\n");
ret = -ENODEV;
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