From: Yangtao Li <tiny.windzz@gmail.com>
Date: Tue, 24 Dec 2019 14:49:54 +0000 (+0000)
Subject: PM / devfreq: exynos-bus: Add error log when fail to get devfreq-event
X-Git-Tag: v5.6-rc1~192^2^2^2~3
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=28135762b83ab5767fecafb997f2dc760b7d2739;p=linux.git

PM / devfreq: exynos-bus: Add error log when fail to get devfreq-event

Adding an error log makes it easier to trace the function's error path.
Because the error code may be rewritten on return, print error code here.

Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
---

diff --git a/drivers/devfreq/exynos-bus.c b/drivers/devfreq/exynos-bus.c
index 1259a0da7db7..8fa8eb541373 100644
--- a/drivers/devfreq/exynos-bus.c
+++ b/drivers/devfreq/exynos-bus.c
@@ -126,6 +126,7 @@ static int exynos_bus_get_dev_status(struct device *dev,
 
 	ret = exynos_bus_get_event(bus, &edata);
 	if (ret < 0) {
+		dev_err(dev, "failed to get event from devfreq-event devices\n");
 		stat->total_time = stat->busy_time = 0;
 		goto err;
 	}