]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
xhci: Warn when hosts don't halt.
authorSarah Sharp <sarah.a.sharp@linux.intel.com>
Fri, 16 Mar 2012 19:58:20 +0000 (12:58 -0700)
committerSarah Sharp <sarah.a.sharp@linux.intel.com>
Wed, 11 Apr 2012 15:28:54 +0000 (08:28 -0700)
commit5af98bb06dee79d28c805f9fd0805ce791121784
tree14f198d776b386c56dc6eb3065227c579ab54a58
parent4e833c0b87a30798e67f06120cecebef6ee9644c
xhci: Warn when hosts don't halt.

Eric Fu reports a problem with his VIA host controller fetching a zeroed
event ring pointer on resume from suspend.  The host should have been
halted, but we can't be sure because that code ignores the return value
from xhci_halt().  Print a warning when the host controller refuses to
halt within XHCI_MAX_HALT_USEC (currently 16 seconds).

(Update: it turns out that the VIA host controller is reporting a halted
state when it fetches the zeroed event ring pointer.  However, we still
need this warning for other host controllers.)

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
drivers/usb/host/xhci.c