linux-kernel - [PATCH] ALSA: atmel: ac97c: fix error return code in atmel_ac97c

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Date:   Fri, 30 Jun 2017 17:34:23 -0500
From:   "Gustavo A. R. Silva" <garsilva@...eddedor.com>
To:     Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
Cc:     alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <garsilva@...eddedor.com>
Subject: [PATCH] ALSA: atmel: ac97c: fix error return code in
 atmel_ac97c_probe()

platform_get_irq() returns an error code, but the ac97c
driver ignores it and always returns -ENXIO. This is not correct,
and prevents -EPROBE_DEFER from being propagated properly.
Notice that platform_get_irq() no longer returns 0 on error.

Print and propagate the return value of platform_get_irq on failure.

Signed-off-by: Gustavo A. R. Silva <garsilva@...eddedor.com>
---
 sound/atmel/ac97c.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/atmel/ac97c.c b/sound/atmel/ac97c.c
index 65e6948..9d2c9d9 100644
--- a/sound/atmel/ac97c.c
+++ b/sound/atmel/ac97c.c
@@ -774,8 +774,8 @@ static int atmel_ac97c_probe(struct platform_device *pdev)
 
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0) {
-		dev_dbg(&pdev->dev, "could not get irq\n");
-		return -ENXIO;
+		dev_dbg(&pdev->dev, "could not get irq: %d\n", irq);
+		return irq;
 	}
 
 	pclk = clk_get(&pdev->dev, "ac97_clk");
-- 
2.5.0