ARM: at91: fix check of valid GPIO for SPI and USB

SPI chip select pins have to be checked by gpio_is_valid().
The USB host overcurrent_pin checking was missing.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/arch/arm/mach-at91/at91sam9261_devices.c b/arch/arm/mach-at91/at91sam9261_devices.c
index 096da87dc00d..4db961a93085 100644
--- a/arch/arm/mach-at91/at91sam9261_devices.c
+++ b/arch/arm/mach-at91/at91sam9261_devices.c
@@ -415,6 +415,9 @@ void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
                 else
                         cs_pin = spi1_standard_cs[devices[i].chip_select];
 
+                if (!gpio_is_valid(cs_pin))
+                        continue;
+
                 if (devices[i].bus_num == 0)
                         enable_spi0 = 1;
                 else