[PATCH] misc: atmel-ssc: Fix IRQ check in ssc_probe
From: Miaoqian Lin <hidden>
Date: 2022-01-14 06:23:47
Also in:
lkml
Subsystem:
char and misc drivers, microchip ssc driver, the rest · Maintainers:
Arnd Bergmann, Greg Kroah-Hartman, Claudiu Beznea, Andrei Simion, Linus Torvalds
platform_get_irq() returns negative error number instead 0 on failure.
And the doc of platform_get_irq() provides a usage example:
int irq = platform_get_irq(pdev, 0);
if (irq < 0)
return irq;
Fix the check of return value to catch errors correctly.
Fixes: eb1f2930609b ("Driver for the Atmel on-chip SSC on AT32AP and AT91")
Signed-off-by: Miaoqian Lin <redacted>
---
drivers/misc/atmel-ssc.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/misc/atmel-ssc.c b/drivers/misc/atmel-ssc.c
index d6cd5537126c..69f9b0336410 100644
--- a/drivers/misc/atmel-ssc.c
+++ b/drivers/misc/atmel-ssc.c@@ -232,9 +232,9 @@ static int ssc_probe(struct platform_device *pdev) clk_disable_unprepare(ssc->clk); ssc->irq = platform_get_irq(pdev, 0); - if (!ssc->irq) { + if (ssc->irq < 0) { dev_dbg(&pdev->dev, "could not get irq\n"); - return -ENXIO; + return ssc->irq; } mutex_lock(&user_lock);
--
2.17.1
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