tree 84af116c39a95d13a264448be20cc90a1afd7629
parent fe5b2e54d6c639996d29a2840c9335c9a446361e
author Mathias Nyman <mathias.nyman@linux.intel.com> 1584024309 +0200
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1587113319 +0200

xhci: bail out early if driver can't accress host in resume

[ Upstream commit 72ae194704da212e2ec312ab182a96799d070755 ]

Bail out early if the xHC host needs to be reset at resume
but driver can't access xHC PCI registers.

If xhci driver already fails to reset the controller then there
is no point in attempting to free, re-initialize, re-allocate and
re-start the host. If failure to access the host is detected later,
failing the resume, xhci interrupts will be double freed
when remove is called.

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20200312144517.1593-2-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>