From: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Date: Fri, 20 Apr 2018 11:20:52 +0000 (+0530)
Subject: tty: uartlite: Enable clocks at probe
X-Git-Tag: xlnx_rebase_v4.14_2018.2~51
X-Git-Url: https://rtime.felk.cvut.cz/gitweb/zynq/linux.git/commitdiff_plain/4167bf0f17ca54a619b36d64ee9890a9ba059a69

tty: uartlite: Enable clocks at probe

At probe the uartlite is getting configured.
Enable the clocks before assiging uart and
disable after probe is done.

Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
---

diff --git a/drivers/tty/serial/uartlite.c b/drivers/tty/serial/uartlite.c
index e0ec023717fe..2df7edf1d724 100644
--- a/drivers/tty/serial/uartlite.c
+++ b/drivers/tty/serial/uartlite.c
@@ -779,13 +779,17 @@ static int ulite_probe(struct platform_device *pdev)
 		pdata->clk = NULL;
 	}
 
-	ret = clk_prepare(pdata->clk);
+	ret = clk_prepare_enable(pdata->clk);
 	if (ret) {
 		dev_err(&pdev->dev, "Failed to prepare clock\n");
 		return ret;
 	}
 
-	return ulite_assign(&pdev->dev, id, res->start, irq, pdata);
+	ret = ulite_assign(&pdev->dev, id, res->start, irq, pdata);
+
+	clk_disable(pdata->clk);
+
+	return ret;
 }
 
 static int ulite_remove(struct platform_device *pdev)