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authorJan Kiszka <jan.kiszka@siemens.com>2017-05-13 10:28:59 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-05-18 17:26:40 +0300
commit7dea8165f1d6434dc7572004363f86339f0f4322 (patch)
tree04965ba886fc353d7da7471bd82b5a80c4688041 /drivers/tty
parent4dec2f119e86f9c91e60cdd8f0cc057452e331a9 (diff)
downloadlinux-7dea8165f1d6434dc7572004363f86339f0f4322.tar.xz
serial: exar: Preconfigure xr17v35x MPIOs as output
This is the safe default for GPIOs with unknown external wiring. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/serial/8250/8250_exar.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/tty/serial/8250/8250_exar.c b/drivers/tty/serial/8250/8250_exar.c
index 2a8f00d96e6b..0a20f7185094 100644
--- a/drivers/tty/serial/8250/8250_exar.c
+++ b/drivers/tty/serial/8250/8250_exar.c
@@ -176,13 +176,13 @@ static void setup_gpio(u8 __iomem *p)
writeb(0x00, p + UART_EXAR_MPIOLVL_7_0);
writeb(0x00, p + UART_EXAR_MPIO3T_7_0);
writeb(0x00, p + UART_EXAR_MPIOINV_7_0);
- writeb(0x00, p + UART_EXAR_MPIOSEL_7_0);
+ writeb(0xff, p + UART_EXAR_MPIOSEL_7_0);
writeb(0x00, p + UART_EXAR_MPIOOD_7_0);
writeb(0x00, p + UART_EXAR_MPIOINT_15_8);
writeb(0x00, p + UART_EXAR_MPIOLVL_15_8);
writeb(0x00, p + UART_EXAR_MPIO3T_15_8);
writeb(0x00, p + UART_EXAR_MPIOINV_15_8);
- writeb(0x00, p + UART_EXAR_MPIOSEL_15_8);
+ writeb(0xff, p + UART_EXAR_MPIOSEL_15_8);
writeb(0x00, p + UART_EXAR_MPIOOD_15_8);
}