[PATCH] gpiolib: fix freeing of descriptors on error

[Jim Paris]

When the main loop in linehandle_create() encounters an error, it
fails to free one of the previously-requested GPIO descriptors.
This renders the unfreed GPIO unusable until reboot, and leaves
its label pointing to free'd kernel memory.

Cc: sta...@vger.kernel.org
Fixes: ab3dbcf78f60 ("gpioib: do not free unrequested descriptors")
Signed-off-by: Jim Paris <j...@jtan.com>
---
 drivers/gpio/gpiolib.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index e8f8a1999393..a57300c1d649 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -571,7 +571,7 @@ static int linehandle_create(struct gpio_device *gdev, void 
__user *ip)
                if (ret)
                        goto out_free_descs;
                lh->descs[i] = desc;
-               count = i;
+               count = i + 1;
 
                if (lflags & GPIOHANDLE_REQUEST_ACTIVE_LOW)
                        set_bit(FLAG_ACTIVE_LOW, &desc->flags);
-- 
2.18.0