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mfd: fsl-imx25: Fix check for platform_get_irq() errors 

The mx25_tsadc_remove() function assumes all non-zero returns are success
but the platform_get_irq() function returns negative on error and
positive non-zero values on success.  It never returns zero, but if it
did then treat that as a success.

Fixes: 18f7739379 ("mfd: fsl-imx25: Clean up irq settings during removal")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Martin Kaiser <martin@kaiser.cx>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/YvTfkbVQWYKMKS/t@kili
This commit is contained in:
Dan Carpenter 2022-08-11 13:53:05 +03:00 committed by Lee Jones
parent f8c1940165
commit 75db790735
1 changed files with 2 additions and 2 deletions
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4
drivers/mfd/fsl-imx25-tsadc.c
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@ -69,7 +69,7 @@ static int mx25_tsadc_setup_irq(struct platform_device *pdev,
int irq;
irq = platform_get_irq(pdev, 0);
if (irq <= 0)
if (irq < 0)
return irq;
tsadc->domain = irq_domain_add_simple(np, 2, 0, &mx25_tsadc_domain_ops,
@ -89,7 +89,7 @@ static int mx25_tsadc_unset_irq(struct platform_device *pdev)
struct mx25_tsadc *tsadc = platform_get_drvdata(pdev);
int irq = platform_get_irq(pdev, 0);
if (irq) {
if (irq >= 0) {
irq_set_chained_handler_and_data(irq, NULL, NULL);
irq_domain_remove(tsadc->domain);
}