xhci: fix debugfs register accesses while suspended
authorJohan Hovold <johan+linaro@kernel.org>
Wed, 5 Apr 2023 09:03:42 +0000 (11:03 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 20 Apr 2023 08:13:06 +0000 (10:13 +0200)
commit735baf1b23458f71a8b15cb924af22c9ff9cd125
treec68aaeaff6101e0d4ac994feadcfea285bcb2e5f
parent091b813d3d1078afba6ed74fa8df2a5bbc9bf124
xhci: fix debugfs register accesses while suspended

Wire up the debugfs regset device pointer so that the controller is
resumed before accessing registers to avoid crashing or locking up if it
happens to be runtime suspended.

Fixes: 02b6fdc2a153 ("usb: xhci: Add debugfs interface for xHCI driver")
Cc: stable@vger.kernel.org # 4.15: 30332eeefec8: debugfs: regset32: Add Runtime PM support
Cc: stable@vger.kernel.org # 4.15
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20230405090342.7363-1-johan+linaro@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/host/xhci-debugfs.c