From: Johan Hovold Date: Wed, 4 Nov 2020 16:47:27 +0000 (+0100) Subject: USB: serial: mos7720: fix parallel-port state restore X-Git-Tag: v4.4.249~25 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=158806154b75511b6ffc2c74271c5e8cc34c314b;p=thirdparty%2Fkernel%2Fstable.git USB: serial: mos7720: fix parallel-port state restore 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 # 2.6.35 Reviewed-by: Greg Kroah-Hartman Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c index 1927f41ccafc4..1d8a6c17c9eb0 100644 --- a/drivers/usb/serial/mos7720.c +++ b/drivers/usb/serial/mos7720.c @@ -640,6 +640,8 @@ static void parport_mos7715_restore_state(struct parport *pp, 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,