iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

usb: xhci: Increase timeout for HC halt

Browse Source 
On some devices (specifically the SC8180x based Surface Pro X with
QCOM04A6) HC halt / xhci_halt() times out during boot. Manually binding
the xhci-hcd driver at some point later does not exhibit this behavior.
To work around this, double XHCI_MAX_HALT_USEC, which also resolves this
issue.

Cc: <stable@vger.kernel.org>
Signed-off-by: Maximilian Luz <luzmaximilian@gmail.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20210512080816.866037-5-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Maximilian Luz 2021-05-12 11:08:15 +03:00 committed by Greg Kroah-Hartman
parent dda32c00c9
commit ca09b1bea6
1 changed files with 3 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/usb/host/xhci-ext-caps.h
View File

@ -7,8 +7,9 @@
* Author: Sarah Sharp
* Some code borrowed from the Linux EHCI driver.
*/
/* Up to 16 ms to halt an HC */
#define XHCI_MAX_HALT_USEC (16*1000)
/* HC should halt within 16 ms, but use 32 ms as some hosts take longer */
#define XHCI_MAX_HALT_USEC (32 * 1000)
/* HC not running - set to 1 when run/stop bit is cleared. */
#define XHCI_STS_HALT (1<<0)