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USB: isight: fix kernel bug when loading firmware

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commit 59bf5cf94f upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Greg Kroah-Hartman
2011-12-05 14:02:59 -08:00
parent e60f83773e
commit 41671fca58
1 changed files with 4 additions and 2 deletions
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6
drivers/usb/misc/isight_firmware.c
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@@ -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;