| commit | 2e6aac905807a7f440c15e03e6c88fa4922d849e | |
| author | Sarah Sharp <sarah.a.sharp@linux.intel.com> | |
| Mon, 24 May 2010 20:25:15 +0000 (24 13:25 -0700) | ||
| committer | Greg Kroah-Hartman <gregkh@suse.de> | |
| Mon, 5 Jul 2010 18:22:48 +0000 (5 11:22 -0700) | ||
| tree | ddd3632114ea5c3d6599167c2c6b7c1eaa8dcd60 | treesnapshot (tar.gz zip) |
| parent | cf86414c11c5654ce50a5b476ce00fb4b6db46d4 | commitdiff |
USB: xhci: Wait for controller to be ready after reset.
commit 2d62f3eea98354d61f90d6b115eecf9be5f4bdfe upstream.
After software resets an xHCI host controller, it must wait for the
"Controller Not Ready" (CNR) bit in the status register to be cleared.
Software is not supposed to ring any doorbells or write to any registers
except the status register until this bit is cleared.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
commit 2d62f3eea98354d61f90d6b115eecf9be5f4bdfe upstream.
After software resets an xHCI host controller, it must wait for the
"Controller Not Ready" (CNR) bit in the status register to be cleared.
Software is not supposed to ring any doorbells or write to any registers
except the status register until this bit is cleared.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| drivers/usb/host/xhci.c | diffblobblamehistory |