From: Sakari Ailus <sakari.ailus@linux.intel.com>
Date: Tue, 29 Aug 2017 12:41:25 +0000 (-0300)
Subject: [media] smiapp: Make clock control optional
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=ccec44cc910d1fa94690e0b9f07194be3421cb1a;p=openwrt%2Fstaging%2Fblogic.git

[media] smiapp: Make clock control optional

The clock control is not explicitly controlled by the driver in two cases:
ACPI based systems and when the clock is part of the power sequence of the
camera module.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---

diff --git a/drivers/media/i2c/smiapp/smiapp-core.c b/drivers/media/i2c/smiapp/smiapp-core.c
index 009b5e26204b..fbd851be51d2 100644
--- a/drivers/media/i2c/smiapp/smiapp-core.c
+++ b/drivers/media/i2c/smiapp/smiapp-core.c
@@ -2892,7 +2892,10 @@ static int smiapp_probe(struct i2c_client *client,
 	}
 
 	sensor->ext_clk = devm_clk_get(&client->dev, NULL);
-	if (IS_ERR(sensor->ext_clk)) {
+	if (PTR_ERR(sensor->ext_clk) == -ENOENT) {
+		dev_info(&client->dev, "no clock defined, continuing...\n");
+		sensor->ext_clk = NULL;
+	} else if (IS_ERR(sensor->ext_clk)) {
 		dev_err(&client->dev, "could not get clock (%ld)\n",
 			PTR_ERR(sensor->ext_clk));
 		return -EPROBE_DEFER;