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greybus: es2: don't protest when getting -ENOENT/ESHUTDOWN USB errors

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-ENOENT or -ESHUTDOWN happens when the urbs are being killed from
->disconnect() callback.  Don't complain to userspace about this, as the
user will see this on es2 module removal.

Tested by removing the gb-es2.ko module on both EVT1.5 and qemu with
gbsim. The driver doesn't throw anymore errors like:
"urb cport in error -2 (dropped)".

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Tested-by: David Lin <dtwlin@google.com>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Viresh Kumar 2016-04-21 11:31:15 +05:30 committed by Greg Kroah-Hartman
parent ecdd3a2d59
commit 62de6e0a72
1 changed files with 5 additions and 0 deletions
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5
drivers/staging/greybus/es2.c
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@ -715,6 +715,11 @@ static void cport_in_callback(struct urb *urb)
if (status) {
if ((status == -EAGAIN) || (status == -EPROTO))
goto exit;
/* The urb is being unlinked */
if (status == -ENOENT || status == -ESHUTDOWN)
return;
dev_err(dev, "urb cport in error %d (dropped)\n", status);
return;
}