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| author | Mathias Nyman <mathias.nyman@linux.intel.com> | 2017-09-18 17:39:17 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-09-18 18:10:41 +0300 |
| commit | 4ec1cd3eeeee7ccc35681270da028dbc29ca7bbd (patch) | |
| tree | 4846232141189bfc8b213bbf89830a19b37400c7 /drivers/usb/host/xhci-hub.c | |
| parent | c6b8e79306f515b5483eb11076e0fbfc140434a8 (diff) | |
| download | linux-4ec1cd3eeeee7ccc35681270da028dbc29ca7bbd.tar.xz | |
xhci: Fix sleeping with spin_lock_irq() held in ASmedia 1042A workaround
The flow control workaround for ASM1042A xHC hosts sleeps between
register polling. The workaround gets called in several places, among
them with spin_lock_irq() held when xHC host is resumed or hoplug removed.
This was noticed as kernel panics at resume on a Dell XPS15 9550 with
TB16 thunderbolt dock.
Avoid sleeping with spin_lock_irq() held, use udelay() instead
The original workaround was added to 4.9 and 4.12 stable releases,
this patch needs to be applied to those as well.
Fixes: 9da5a1092b13 ("xhci: Bad Ethernet performance plugged in ASM1042A host")
Cc: <stable@vger.kernel.org> #4.9+
Reported-by: Jose Marino <marinoj@nso.edu>
Tested-by: Jose Marino <marinoj@nso.edu>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/xhci-hub.c')
0 files changed, 0 insertions, 0 deletions