tree 10e0a54e3e20a42a8dd4b20448705f0ebad1dd94
parent af59cf404fc7ad6cc642de9e78252fb264917611
author Alan Stern <stern@rowland.harvard.edu> 1170687375 -0500
committer Greg Kroah-Hartman <gregkh@suse.de> 1171668739 -0800

USB: fix concurrent buffer access in the hub driver

This patch (as849) fixes a bug in the USB hub driver.  A single
pre-allocated buffer is used for all port status reads, but nothing
guarantees exclusive use of the buffer.  A mutex is added to provide
this guarantee.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>