i2c: s3c2410: fix IRQ check

[ 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 <s.shtylyov@omp.ru>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c
index 40fa9e4af5d1c1e998bd8ca44b9e70ee9aa6fddf..05831848b7bf684341471c2b76539d2d03217c9f 100644 (file)
--- a/drivers/i2c/busses/i2c-s3c2410.c
+++ b/drivers/i2c/busses/i2c-s3c2410.c
@@ -1140,7 +1140,7 @@ 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;