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tty: serial: samsung_tty: Fix suspend/resume on S5L 

We were restoring the IRQ masks then clearing them again, because
ucon_mask wasn't set properly. Adding that makes suspend/resume
work as intended.

Signed-off-by: Hector Martin <marcan@marcan.st>
Link: https://lore.kernel.org/r/20220502092505.30934-1-marcan@marcan.st
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Hector Martin 2022-05-02 18:25:05 +09:00 committed by Greg Kroah-Hartman
parent 91ca09ca7f
commit 135c579d77
2 changed files with 4 additions and 0 deletions
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1
drivers/tty/serial/samsung_tty.c
View File

@ -2826,6 +2826,7 @@ static const struct s3c24xx_serial_drv_data s5l_serial_drv_data = {
.num_clks = 1,
.clksel_mask = 0,
.clksel_shift = 0,
.ucon_mask = APPLE_S5L_UCON_MASK,
},
.def_cfg = {
.ucon = APPLE_S5L_UCON_DEFAULT,

3
include/linux/serial_s3c.h
View File

@ -256,6 +256,9 @@
#define APPLE_S5L_UCON_DEFAULT (S3C2410_UCON_TXIRQMODE | \
S3C2410_UCON_RXIRQMODE | \
S3C2410_UCON_RXFIFO_TOI)
#define APPLE_S5L_UCON_MASK (APPLE_S5L_UCON_RXTO_ENA_MSK | \
APPLE_S5L_UCON_RXTHRESH_ENA_MSK | \
APPLE_S5L_UCON_TXTHRESH_ENA_MSK)
#define APPLE_S5L_UTRSTAT_RXTHRESH (1<<4)
#define APPLE_S5L_UTRSTAT_TXTHRESH (1<<5)