PM / devfreq: tegra: fix error return code in tegra_devfreq_probe()

platform_get_irq() returns an error code, but the tegra-devfreq
driver ignores it and always returns -ENODEV. This is not correct,
and prevents -EPROBE_DEFER from being propagated properly.

Notice that platform_get_irq() no longer returns 0 on error:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e330b9a6bb35dc7097a4f02cb1ae7b6f96df92af

Print and propagate the return value of platform_get_irq on failure.

Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/devfreq/tegra-devfreq.c b/drivers/devfreq/tegra-devfreq.c
index 214fff96fa4a..ae712159246f 100644
--- a/drivers/devfreq/tegra-devfreq.c
+++ b/drivers/devfreq/tegra-devfreq.c
@@ -688,9 +688,9 @@ static int tegra_devfreq_probe(struct platform_device *pdev)
         }
 
         irq = platform_get_irq(pdev, 0);
-        if (irq <= 0) {
-                dev_err(&pdev->dev, "Failed to get IRQ\n");
-                return -ENODEV;
+        if (irq < 0) {
+                dev_err(&pdev->dev, "Failed to get IRQ: %d\n", irq);
+                return irq;
         }
 
         platform_set_drvdata(pdev, tegra);