[PATCH 4.4 075/114] spi/bcm63xx: fix error return code in bcm63xx_spi_probe()

Greg Kroah-Hartman
2018-11-08T22:29:17Z

[ Upstream commit ba8afe94723e9ba665aee9cca649fb2c80f7304c ]

platform_get_irq() returns an error code, but the spi-bcm63xx 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:
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.

This issue was detected with the help of Coccinelle.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/spi/spi-bcm63xx.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/spi/spi-bcm63xx.c b/drivers/spi/spi-bcm63xx.c
index bf9a610e5b89..f14500910bc2 100644
--- a/drivers/spi/spi-bcm63xx.c
+++ b/drivers/spi/spi-bcm63xx.c
@@ -496,8 +496,8 @@ static int bcm63xx_spi_probe(struct platform_device *pdev)

irq = platform_get_irq(pdev, 0);
if (irq < 0) {
- dev_err(dev, "no irq\n");
- return -ENXIO;
+ dev_err(dev, "no irq: %d\n", irq);
+ return irq;
}

clk = devm_clk_get(dev, "spi");
--
2.17.1