From: Jun Li <jun.li@nxp.com>
To: robh+dt@kernel.org, gregkh@linuxfoundation.org,
heikki.krogerus@linux.intel.com, linux@roeck-us.net
Cc: cw00.choi@samsung.com, a.hajda@samsung.com,
shufan_lee@richtek.com, peter.chen@nxp.com,
garsilva@embeddedor.com, gsomlo@gmail.com, jun.li@nxp.com,
linux-usb@vger.kernel.org, devicetree@vger.kernel.org,
linux-imx@nxp.com
Subject: [v6,14/15] staging: typec: tcpci: Only touch target bit when enable vconn
Date: Mon, 28 May 2018 10:52:46 +0800 [thread overview]
Message-ID: <1527475967-15201-15-git-send-email-jun.li@nxp.com> (raw)
We need regmap_update_bits to avoid touch any other bits when
enable or disable vconn.
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Li Jun <jun.li@nxp.com>
---
drivers/staging/typec/tcpci.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/drivers/staging/typec/tcpci.c b/drivers/staging/typec/tcpci.c
index 11c2d37..ac6b418 100644
--- a/drivers/staging/typec/tcpci.c
+++ b/drivers/staging/typec/tcpci.c
@@ -218,12 +218,9 @@ static int tcpci_set_vconn(struct tcpc_dev *tcpc, bool enable)
return ret;
}
- ret = regmap_write(tcpci->regmap, TCPC_POWER_CTRL,
- enable ? TCPC_POWER_CTRL_VCONN_ENABLE : 0);
- if (ret < 0)
- return ret;
-
- return 0;
+ return regmap_update_bits(tcpci->regmap, TCPC_POWER_CTRL,
+ TCPC_POWER_CTRL_VCONN_ENABLE,
+ enable ? TCPC_POWER_CTRL_VCONN_ENABLE : 0);
}
static int tcpci_set_roles(struct tcpc_dev *tcpc, bool attached,
next reply other threads:[~2018-05-28 2:52 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-28 2:52 Jun Li [this message]
-- strict thread matches above, loose matches on Subject: below --
2018-06-11 13:15 [v6,14/15] staging: typec: tcpci: Only touch target bit when enable vconn Heikki Krogerus
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