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[v5,13/14] staging: typec: tcpci: Only touch target bit when enable vconn

Message ID 1525307094-27402-14-git-send-email-jun.li@nxp.com (mailing list archive)
State New, archived
Headers show

Commit Message

Jun Li May 3, 2018, 12:24 a.m. UTC 
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(-)
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Patch

diff --git a/drivers/staging/typec/tcpci.c b/drivers/staging/typec/tcpci.c
index 5c0c5e3..2818a4d 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,