diff mbox series

[3/4] i2c: xiic: defer the probe if clock is not found

Message ID 1578549819-14110-3-git-send-email-shubhrajyoti.datta@gmail.com
State Superseded
Headers show
Series [1/4] i2c: xiic: Fix kerneldoc warnings | expand

Commit Message

Shubhrajyoti Datta Jan. 9, 2020, 6:03 a.m. UTC 
From: Venkatesh Yadav Abbarapu <venkatesh.abbarapu@xilinx.com>

It's not always the case that clock is already available when i2c
driver get probed at the first time, e.g. the clock is provided by
clock wizard which may be probed after i2c driver. So let's defer
the probe when devm_clk_get() call fails and give it chance to
try later.

Signed-off-by: Venkatesh Yadav Abbarapu <venkatesh.abbarapu@xilinx.com>
Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
---
 drivers/i2c/busses/i2c-xiic.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/i2c/busses/i2c-xiic.c b/drivers/i2c/busses/i2c-xiic.c
index 700b401..7d2a8c1 100644
--- a/drivers/i2c/busses/i2c-xiic.c
+++ b/drivers/i2c/busses/i2c-xiic.c
@@ -788,7 +788,8 @@  static int xiic_i2c_probe(struct platform_device *pdev)
 
 	i2c->clk = devm_clk_get(&pdev->dev, NULL);
 	if (IS_ERR(i2c->clk)) {
-		dev_err(&pdev->dev, "input clock not found.\n");
+		if (PTR_ERR(i2c->clk) != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "input clock not found.\n");
 		return PTR_ERR(i2c->clk);
 	}
 	ret = clk_prepare_enable(i2c->clk);