[ Upstream commit 208d3423ee463ab257908456f6bbca4024ab63f7 ]
gcc points out that when CONFIG_GPIOLIB is disabled, gpiod_get_array_value_cansleep() returns 0 but fails to set its output:
drivers/phy/motorola/phy-mapphone-mdm6600.c: In function 'phy_mdm6600_status': drivers/phy/motorola/phy-mapphone-mdm6600.c:220:24: error: 'values[0]' is used uninitialized in this function [-Werror=uninitialized]
This could be fixed more generally in gpiolib by returning a failure code, but for this specific case, the easier workaround is to add a gpiolib dependency.
Fixes: 5d1ebbda0318 ("phy: mapphone-mdm6600: Add USB PHY driver for MDM6600 on Droid 4") Signed-off-by: Arnd Bergmann arnd@arndb.de Acked-by: Tony Lindgren tony@atomide.com Signed-off-by: Kishon Vijay Abraham I kishon@ti.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/phy/motorola/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/phy/motorola/Kconfig b/drivers/phy/motorola/Kconfig index 82651524ffb9c..718f8729701df 100644 --- a/drivers/phy/motorola/Kconfig +++ b/drivers/phy/motorola/Kconfig @@ -13,7 +13,7 @@ config PHY_CPCAP_USB
config PHY_MAPPHONE_MDM6600 tristate "Motorola Mapphone MDM6600 modem USB PHY driver" - depends on OF && USB_SUPPORT + depends on OF && USB_SUPPORT && GPIOLIB select GENERIC_PHY help Enable this for MDM6600 USB modem to work on Motorola phones