From: Sherry Sun <sherry.sun@nxp.com>
To: gregkh@linuxfoundation.org, jirislaby@kernel.org
Cc: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-imx@nxp.com
Subject: [PATCH] tty: serial: imx: clear RTSD status before suspend
Date: Tue, 23 Nov 2021 15:03:49 +0800 [thread overview]
Message-ID: <20211123070349.20099-1-sherry.sun@nxp.com> (raw)
From: Fugang Duan <fugang.duan@nxp.com>
Clear RTSD status before suspend due to the port also
use RTS pin as wakeup source, need to clear the flag first.
Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: Sherry Sun <sherry.sun@nxp.com>
---
drivers/tty/serial/imx.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 90f82e6c54e4..fb75e3e0d828 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -2482,10 +2482,12 @@ static void imx_uart_enable_wakeup(struct imx_port *sport, bool on)
if (sport->have_rtscts) {
u32 ucr1 = imx_uart_readl(sport, UCR1);
- if (on)
+ if (on) {
+ imx_uart_writel(sport, USR1_RTSD, USR1);
ucr1 |= UCR1_RTSDEN;
- else
+ } else {
ucr1 &= ~UCR1_RTSDEN;
+ }
imx_uart_writel(sport, ucr1, UCR1);
}
}
--
2.17.1
next reply other threads:[~2021-11-23 7:07 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-23 7:03 Sherry Sun [this message]
2021-11-23 7:42 ` Uwe Kleine-König
2021-11-23 8:41 ` Sherry Sun
2021-11-23 9:51 ` Uwe Kleine-König
2021-11-23 10:20 ` Sherry Sun
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