linux_dsm_epyc7002/drivers/usb/wusbcore
Thomas Pugliese a899575191 USB: HWA: fix device probe failure
This patch fixes a race condition that caused the HWA_HC interface probe
function to occasionally fail.  The HWA_HC would attempt to register
itself with the HWA_RC by searching for a uwb_rc class device with the
same parent device ptr.  If the probe function for the HWA_RC interface
had yet to run, the uwb_rc class device would not have been created
causing the look up to fail and the HWA_HC probe function to return an
error causing the device to be unusable.

The fix is for the HWA to delay registering with the HWA_RC until
receiving the command from userspace to start the wireless channel.  It
is the responsibility of userspace to ensure that the uwb_rc class
device has been created before starting the HWA channel.

Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-24 16:20:43 -07:00
..
cbaf.c USB: convert drivers/usb/* to use module_usb_driver() 2011-11-18 09:34:02 -08:00
crypto.c Fix common misspellings 2011-03-31 11:26:23 -03:00
dev-sysfs.c uwb: use dev_dbg() for debug messages 2008-12-22 18:22:50 +00:00
devconnect.c wusbcore: reduce keepalive threshold from timeout/2 to timeout/3 2013-06-06 11:19:27 -07:00
Kconfig USB: regroup all depends on USB within an if USB block 2013-04-09 16:49:07 -07:00
Makefile usb: makefile cleanup 2010-10-22 10:22:07 -07:00
mmc.c USB: HWA: fix device probe failure 2013-06-24 16:20:43 -07:00
pal.c USB: HWA: fix device probe failure 2013-06-24 16:20:43 -07:00
reservation.c USB: HWA: fix device probe failure 2013-06-24 16:20:43 -07:00
rh.c wusbhc: disable suspend and resume on the root hub. 2013-06-06 12:14:38 -07:00
security.c wusb: Fix potential memory leak in wusb_dev_sec_add() 2012-08-10 12:06:38 -07:00
wa-hc.c drivers/usb/wusbcore/wa-hc.c: fix error return code 2012-08-15 15:17:40 -07:00
wa-hc.h trivial: fix typos "man[ae]g?ment" -> "management" 2009-09-21 15:14:56 +02:00
wa-nep.c wusbcore wire adapter: ignore HWA_NOTIF_BPST_ADJ notifications 2013-06-06 13:11:14 -07:00
wa-rpipe.c wusbcore: add sysfs attribute for retry count 2013-06-24 16:19:02 -07:00
wa-xfer.c usb: wire adapter: add scatter gather support 2013-06-17 13:41:58 -07:00
wusbhc.c USB: HWA: fix device probe failure 2013-06-24 16:20:43 -07:00
wusbhc.h wusbcore: add sysfs attribute for retry count 2013-06-24 16:19:02 -07:00