diff options
Diffstat (limited to 'drivers/tty/serial/samsung.c')
| -rw-r--r-- | drivers/tty/serial/samsung.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c index b386fc8a5ee..78d9c55a9f8 100644 --- a/drivers/tty/serial/samsung.c +++ b/drivers/tty/serial/samsung.c @@ -1311,9 +1311,29 @@ static int s3c24xx_serial_resume(struct device *dev) return 0; } +static int s3c24xx_serial_resume_noirq(struct device *dev) +{ + struct uart_port *port = s3c24xx_dev_to_port(dev); + + if (port) { + /* restore IRQ mask */ + if (s3c24xx_serial_has_interrupt_mask(port)) { + unsigned int uintm = 0xf; + if (tx_enabled(port)) + uintm &= ~S3C64XX_UINTM_TXD_MSK; + if (rx_enabled(port)) + uintm &= ~S3C64XX_UINTM_RXD_MSK; + wr_regl(port, S3C64XX_UINTM, uintm); + } + } + + return 0; +} + static const struct dev_pm_ops s3c24xx_serial_pm_ops = { .suspend = s3c24xx_serial_suspend, .resume = s3c24xx_serial_resume, + .resume_noirq = s3c24xx_serial_resume_noirq, }; #define SERIAL_SAMSUNG_PM_OPS (&s3c24xx_serial_pm_ops) |