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xhci: fix port BESL LPM capability checking 

Wrong capability bit was checked for best effort service latency.
bit 20 indicate port is BESL LPM capable (BLC),
bit 19 is hardware LPM capable (HLC)

This patch should be backported to kernels as old as 3.11, that
contain the commit a558ccdcc7 "usb: xhci:
add USB2 Link power management BESL support"

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Reported-by: Steve Cotton <steve@s.cotton.clara.co.uk>
Cc: stable@vger.kernel.org
This commit is contained in:
Mathias Nyman 2013-08-21 18:50:09 +03:00 committed by Sarah Sharp
parent c8476fb855
commit dcf06a0368
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/host/xhci-ext-caps.h
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@ -71,7 +71,7 @@
/* USB 2.0 xHCI 1.0 hardware LMP capability - section 7.2.2.1.3.2 */
#define XHCI_HLC (1 << 19)
#define XHCI_BLC (1 << 19)
#define XHCI_BLC (1 << 20)
/* command register values to disable interrupts and halt the HC */
/* start/stop HC execution - do not write unless HC is halted*/