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USB: check serial-number string after device reset

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This patch (as1048) extends the descriptor checking after a device is
reset.  Now the SerialNumber string descriptor is compared to its old
value, in addition to the device and configuration descriptors.

As a consequence, the kmalloc() call in usb_string() is now on the
error-handling pathway for usb-storage.  Hence its allocation type is
changed to GFO_NOIO.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Stern
2008-03-03 15:16:04 -05:00
committed by Greg Kroah-Hartman
parent feccc30d90
commit eb764c4be1
3 changed files with 54 additions and 19 deletions
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2
drivers/usb/core/message.c
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@@ -784,7 +784,7 @@ int usb_string(struct usb_device *dev, int index, char *buf, size_t size)
if (size <= 0 || !buf || !index)
return -EINVAL;
buf[0] = 0;
tbuf = kmalloc(256, GFP_KERNEL);
tbuf = kmalloc(256, GFP_NOIO);
if (!tbuf)
return -ENOMEM;