]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commit
wusbcore: fix root hub hub_status_data to only return > 0 if status has actually...
authorThomas Pugliese <thomas.pugliese@gmail.com>
Thu, 8 Aug 2013 17:11:45 +0000 (12:11 -0500)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 12 Aug 2013 20:13:32 +0000 (13:13 -0700)
commit467d296f47731bcba578cfdea8416b4c152c4f1b
tree9f1e649793a2699b002e7dac26739432d9ab62d1
parent9841f37a1cca5357c1fd198b1068c12955aa632f
wusbcore: fix root hub hub_status_data to only return > 0 if status has actually changed

The hub_status_data function on the wireless USB root hub controller
(wusbhc_rh_status_data) always returns a positive value even if no ports
have changed.  This patch updates wusbhc_rh_status_data to only return a
positive value if the root hub status needs to be queried.  The current
implementation can also leave the upper bits of the port bitmap
uninitialized if wusbhc->ports_max is not one less than an even multiple
of 8.  This patch fixes that as well by initializing the buffer to 0.

Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/wusbcore/rh.c