[PATCH RESEND gpio] gpio-amd8111: check ioport_map return value

[Varka Bhadram <varkabhadram@xxxxxxxxx>]

From: Varka Bhadram <varkabhadram@xxxxxxxxx>

ioport_map() may fail. Its safe to check the return value.

Signed-off-by: Varka Bhadram <varkab@xxxxxxx>
---
 drivers/gpio/gpio-amd8111.c |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpio/gpio-amd8111.c b/drivers/gpio/gpio-amd8111.c
index d3d2d10..2c4d9ab 100644
--- a/drivers/gpio/gpio-amd8111.c
+++ b/drivers/gpio/gpio-amd8111.c
@@ -213,6 +213,11 @@ found:
 		goto out;
 	}
 	gp.pm = ioport_map(gp.pmbase + PMBASE_OFFSET, PMBASE_SIZE);
+	if (!gp.pm) {
+		dev_err(&pdev->dev, "Couldn't map io port into io memory\n");
+		err = -ENOMEM;
+		goto out;
+	}
 	gp.pdev = pdev;
 	gp.chip.dev = &pdev->dev;
 
-- 
1.7.9.5

--
To unsubscribe from this list: send the line "unsubscribe linux-gpio" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html