Thread (309 messages) flat view 309 messages, 8 authors, 2021-09-14
STALE1806d REVIEWED: 1 (0M)

1 review trailer.

[PATCH 5.13 213/300] i2c: s3c2410: fix IRQ check

From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2021-09-13 14:11:30
Also in: lkml
Subsystem: arm/samsung s3c, s5p and exynos arm architectures, i2c subsystem, i2c subsystem host drivers, the rest · Maintainers: Krzysztof Kozlowski, Peter Griffin, Andi Shyti, Linus Torvalds

From: Sergey Shtylyov <redacted>

[ Upstream commit d6840a5e370b7ea4fde16ce2caf431bcc87f9a75 ]

Iff platform_get_irq() returns 0, the driver's probe() method will return 0
early (as if the method's call was successful).  Let's consider IRQ0 valid
for simplicity -- devm_request_irq() can always override that decision...

Fixes: e0d1ec97853f ("i2c-s3c2410: Change IRQ to be plain integer.")
Signed-off-by: Sergey Shtylyov <redacted>
Reviewed-by: Krzysztof Kozlowski <redacted>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/i2c/busses/i2c-s3c2410.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c
index 4d82761e1585..b49a1b170bb2 100644
--- a/drivers/i2c/busses/i2c-s3c2410.c
+++ b/drivers/i2c/busses/i2c-s3c2410.c
@@ -1137,7 +1137,7 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev)
 	 */
 	if (!(i2c->quirks & QUIRK_POLL)) {
 		i2c->irq = ret = platform_get_irq(pdev, 0);
-		if (ret <= 0) {
+		if (ret < 0) {
 			dev_err(&pdev->dev, "cannot find IRQ\n");
 			clk_unprepare(i2c->clk);
 			return ret;
-- 
2.30.2


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