2017-11-19 03:54:50

by Arvind Yadav

[permalink] [raw]
Subject: [PATCH 2/2 v2] misc: atmel-ssc: Fix platform_get_irq's error checking

The platform_get_irq() function returns negative if an error occurs.
zero or positive number on success. platform_get_irq() error checking
for zero is not correct.

Signed-off-by: Arvind Yadav <[email protected]>
---
changes in v2 :
Add failure case '<= 0' instead of '< 0'. IRQ 0 is not valid.

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 b2a0340..9d9eeae 100644
--- a/drivers/misc/atmel-ssc.c
+++ b/drivers/misc/atmel-ssc.c
@@ -235,9 +235,9 @@ 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;
}

spin_lock(&user_lock);
--
2.7.4


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