Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.10 579/717] USB: serial: mos7720: fix parallel-port state restore | Date | Mon, 28 Dec 2020 13:49:37 +0100 |
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From: Johan Hovold <johan@kernel.org>
commit 975323ab8f116667676c30ca3502a6757bd89e8d upstream.
The parallel-port restore operations is called when a driver claims the port and is supposed to restore the provided state (e.g. saved when releasing the port).
Fixes: b69578df7e98 ("USB: usbserial: mos7720: add support for parallel port on moschip 7715") Cc: stable <stable@vger.kernel.org> # 2.6.35 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>
--- drivers/usb/serial/mos7720.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/usb/serial/mos7720.c +++ b/drivers/usb/serial/mos7720.c @@ -639,6 +639,8 @@ static void parport_mos7715_restore_stat spin_unlock(&release_lock); return; } + mos_parport->shadowDCR = s->u.pc.ctr; + mos_parport->shadowECR = s->u.pc.ecr; write_parport_reg_nonblock(mos_parport, MOS7720_DCR, mos_parport->shadowDCR); write_parport_reg_nonblock(mos_parport, MOS7720_ECR,
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