[PATCH] spi: bcm2835: add a sentinel at the end of the lookup array

[Bartosz Golaszewski]

From: Bartosz Golaszewski <bartosz.golaszewski at linaro.org>

GPIOLIB expects the array of lookup entries to be terminated with an
empty member. We need to increase the size of the variable length array
in the lookup table by 1.

Fixes: 21f252cd29f0 ("spi: bcm2835: reduce the abuse of the GPIO API")
Reported-by: Hans de Goede <hdegoede at redhat.com>
Closes: https://lore.kernel.org/lkml/29764d46-8d3d-9794-bbde-d7928a91cbb5@redhat.com/
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski at linaro.org>
---
 drivers/spi/spi-bcm2835.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/spi/spi-bcm2835.c b/drivers/spi/spi-bcm2835.c
index c9078fee3662..e709887eb2a9 100644
--- a/drivers/spi/spi-bcm2835.c
+++ b/drivers/spi/spi-bcm2835.c
@@ -1299,7 +1299,7 @@ static int bcm2835_spi_setup(struct spi_device *spi)
 	 * More on the problem that it addresses:
 	 *   https://www.spinics.net/lists/linux-gpio/msg36218.html
 	 */
-	lookup = kzalloc(struct_size(lookup, table, 1), GFP_KERNEL);
+	lookup = kzalloc(struct_size(lookup, table, 2), GFP_KERNEL);
 	if (!lookup) {
 		ret = -ENOMEM;
 		goto err_cleanup;
-- 
2.39.2