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authorTero Kristo <t-kristo@ti.com>2016-11-24 14:58:28 +0200
committerGuenter Roeck <linux@roeck-us.net>2016-12-16 06:53:53 -0800
commit9b3865749589d67f612d71b447847223b2321408 (patch)
tree708fc46c53328d290879cbec69ee9703176d7c05 /drivers/watchdog/davinci_wdt.c
parent807f0b2d22b0934fc1c67df8a4961044bd76b081 (diff)
watchdog: davinci: add support for deferred probing
devm_clk_get can fail with EPROBE_DEFER in case the clock provider is not ready yet. Handle this case gracefully, rather than dumping out a huge warning. Signed-off-by: Tero Kristo <t-kristo@ti.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/watchdog/davinci_wdt.c')
-rw-r--r--drivers/watchdog/davinci_wdt.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/watchdog/davinci_wdt.c b/drivers/watchdog/davinci_wdt.c
index 17454ca653f4..0e731d797a2a 100644
--- a/drivers/watchdog/davinci_wdt.c
+++ b/drivers/watchdog/davinci_wdt.c
@@ -166,8 +166,12 @@ static int davinci_wdt_probe(struct platform_device *pdev)
return -ENOMEM;
davinci_wdt->clk = devm_clk_get(dev, NULL);
- if (WARN_ON(IS_ERR(davinci_wdt->clk)))
+
+ if (IS_ERR(davinci_wdt->clk)) {
+ if (PTR_ERR(davinci_wdt->clk) != -EPROBE_DEFER)
+ dev_err(&pdev->dev, "failed to get clock node\n");
return PTR_ERR(davinci_wdt->clk);
+ }
clk_prepare_enable(davinci_wdt->clk);