net: encx24j600: Fix SPI id table definition

A driver's SPI id table is expected to be an array of struct spi_device_id
that ends with a zero-initialized sentinel entry. But this driver defines
the table as a single struct spi_device_id and sets .id_table to a pointer
to this struct.

But spi_match_id() has a loop that iterates while the struct spi_device_id
.name[0] is not NULL, so not having a sentinel can cause a NULL pointer
deference error.

This patch defines the SPI id table correctly as all other SPI drivers do.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 3 deletions

diff --git a/drivers/net/ethernet/microchip/encx24j600.c b/drivers/net/ethernet/microchip/encx24j600.c
index bf08ce2baf8d..c2dafc1c53de 100644
--- a/drivers/net/ethernet/microchip/encx24j600.c
+++ b/drivers/net/ethernet/microchip/encx24j600.c
@@ -1094,8 +1094,9 @@ static int encx24j600_spi_remove(struct spi_device *spi)
         return 0;
 }
 
-static const struct spi_device_id encx24j600_spi_id_table = {
-        .name = "encx24j600"
+static const struct spi_device_id encx24j600_spi_id_table[] = {
+        { .name = "encx24j600" },
+        { /* sentinel */ }
 };
 
 static struct spi_driver encx24j600_spi_net_driver = {
@@ -1106,7 +1107,7 @@ static struct spi_driver encx24j600_spi_net_driver = {
         },
         .probe          = encx24j600_spi_probe,
         .remove         = encx24j600_spi_remove,
-        .id_table       = &encx24j600_spi_id_table,
+        .id_table       = encx24j600_spi_id_table,
 };
 
 static int __init encx24j600_init(void)