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Message-Id: <1519936484-23132-1-git-send-email-krzk@kernel.org>
Date: Thu, 1 Mar 2018 21:34:44 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Kukjin Kim <kgene@...nel.org>,
Krzysztof Kozlowski <krzk@...nel.org>,
Wolfram Sang <wsa@...-dreams.de>,
linux-arm-kernel@...ts.infradead.org,
linux-samsung-soc@...r.kernel.org, linux-i2c@...r.kernel.org,
linux-kernel@...r.kernel.org
Cc: Dan Carpenter <dan.carpenter@...cle.com>,
Ben Dooks <ben-linux@...ff.org>, stable@...r.kernel.org
Subject: [PATCH] i2c: s3c2410: Properly handle interrupts of number 0
Interrupt number 0 (returned by platform_get_irq()) might be a valid IRQ
so do not treat it as an error. If interrupt 0 was configured, the driver
would exit the probe early, before finishing initialization, but with
0-exit status.
Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
Cc: stable@...r.kernel.org
Fixes: e0d1ec97853f ("i2c-s3c2410: Change IRQ to be plain integer.")
Signed-off-by: Krzysztof Kozlowski <krzk@...nel.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 5d97510ee48b..783a93404f47 100644
--- a/drivers/i2c/busses/i2c-s3c2410.c
+++ b/drivers/i2c/busses/i2c-s3c2410.c
@@ -1178,7 +1178,7 @@ 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;
--
2.7.4
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