USB: serial: ark3116: fix open error handling

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commit b631433b17 upstream.

Fix open error handling which failed to detect errors when reading the
MSR and LSR registers, something which could lead to the shadow
registers being initialised from errnos.

Note that calling the generic close implementation is sufficient in the
error paths as the interrupt urb has not yet been submitted and the
register updates have not been made.

Fixes: f4c1e8d597 ("USB: ark3116: Make existing functions 16450-aware
and add close and release functions.")
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Johan Hovold 2017-01-12 14:56:10 +01:00 • committed by Greg Kroah-Hartman

parent 94bbbfe21b

commit ca4e6525df

1 changed files with 19 additions and 6 deletions

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drivers/usb/serial/ark3116.c

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