Thread (5 messages) 5 messages, 3 authors, 2017-02-01

RE: [PATCH] serial: samsung: add clock controls in s3c24xx_serial_resume_noirq()

From: 남영민 <hidden>
Date: 2016-10-04 05:05:06
Also in: linux-samsung-soc

Hello,
On Tue, Sep 27, 2016 at 10:43:54PM +0900, 남영민 wrote:
quoted
This patch adds clock controls in s3c24xx_serial_resume_noirq() to set
S3C64XX_UINTM register.
Code looks correct but the commit message is bogus. It does not bring any
benefit over the code, not mentioning that it is quite cryptic (what does
the "clock controls" mean?).

Just describe here WHAT is the problem and WHY the fix is needed.

Best regards,
Krzysztof
Thank you for taking your time for the review.
I will improve the commit message applying your suggestions and resend this patch.

Best regards,
Youngmin Nam

quoted
Signed-off-by: Youngmin Nam <redacted>
---
 drivers/tty/serial/samsung.c | 3 +++
 1 file changed, 3 insertions(+)
diff --git a/drivers/tty/serial/samsung.c
b/drivers/tty/serial/samsung.c index ae2095a..97f7b3b 100644
--- a/drivers/tty/serial/samsung.c
+++ b/drivers/tty/serial/samsung.c
@@ -1921,6 +1921,7 @@ static int s3c24xx_serial_resume(struct device
*dev)  static int s3c24xx_serial_resume_noirq(struct device *dev)  {
 	struct uart_port *port = s3c24xx_dev_to_port(dev);
+	struct s3c24xx_uart_port *ourport = to_ourport(port);

 	if (port) {
 		/* restore IRQ mask */
@@ -1930,7 +1931,9 @@ static int s3c24xx_serial_resume_noirq(struct
device *dev)
quoted
 				uintm &= ~S3C64XX_UINTM_TXD_MSK;
 			if (rx_enabled(port))
 				uintm &= ~S3C64XX_UINTM_RXD_MSK;
+			clk_prepare_enable(ourport->clk);
 			wr_regl(port, S3C64XX_UINTM, uintm);
+			clk_disable_unprepare(ourport->clk);
 		}
 	}

--
2.8.1


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