mmc: sdhci-acpi: Fix IRQ 0

ahunter6 · storulf · commit d58ac803cfbb · 2018-03-21T11:10:20.000+01:00
Zero is a valid IRQ number and is being used on some CHT tablets. Stop treating it as an error. Reported-by: Luke Ross <luke@lukeross.name> Fixes: 1b7ba57 ("mmc: sdhci-acpi: Handle return value of platform_get_irq") Cc: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: stable@vger.kernel.org Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c
@@ -680,7 +680,7 @@ static int sdhci_acpi_probe(struct platform_device *pdev)
 	host->hw_name	= "ACPI";
 	host->ops	= &sdhci_acpi_ops_dflt;
 	host->irq	= platform_get_irq(pdev, 0);
-	if (host->irq <= 0) {
+	if (host->irq < 0) {
 		err = -EINVAL;
 		goto err_free;
 	}

Original file line number	Diff line number	Diff line change
`@@ -680,7 +680,7 @@ static int sdhci_acpi_probe(struct platform_device *pdev)`
`680`	`680`	`host->hw_name = "ACPI";`
`681`	`681`	`host->ops = &sdhci_acpi_ops_dflt;`
`682`	`682`	`host->irq = platform_get_irq(pdev, 0);`
`683`		`- if (host->irq <= 0) {`
	`683`	`+ if (host->irq < 0) {`
`684`	`684`	`err = -EINVAL;`
`685`	`685`	`goto err_free;`
`686`	`686`	`}`