[PATCH AUTOSEL 4.4 59/65] ASoC: spear: fix error return code in spdif_in_probe()

Sasha Levin
2018-10-25T14:18:40Z

From: "Gustavo A. R. Silva" <garsilva@embeddedor.com>

[ Upstream commit 27d30400c448264c1ac9434cb836de0c230af213 ]

platform_get_irq() returns an error code, but the spdif_in driver
ignores it and always returns -EINVAL. 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 error message and propagate the return value of platform_get_irq
on failure.

Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/soc/spear/spdif_in.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/sound/soc/spear/spdif_in.c b/sound/soc/spear/spdif_in.c
index 977a078eb92f..7f32527fc3c8 100644
--- a/sound/soc/spear/spdif_in.c
+++ b/sound/soc/spear/spdif_in.c
@@ -223,8 +223,10 @@ static int spdif_in_probe(struct platform_device *pdev)

host->io_base = io_base;
host->irq = platform_get_irq(pdev, 0);
- if (host->irq < 0)
- return -EINVAL;
+ if (host->irq < 0) {
+ dev_warn(&pdev->dev, "failed to get IRQ: %d\n", host->irq);
+ return host->irq;
+ }

host->clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(host->clk))
--
2.17.1