diff options
| author | Florian Fainelli | 2023-04-14 10:02:39 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2023-05-11 23:03:30 +0900 |
| commit | 727e92fe13e81c6088a88d83e466b2b1b553c4e3 (patch) | |
| tree | ec9363dc817240f2987d7617f9aadb5595be38e9 /drivers/tty | |
| parent | 1ae3e5f20203d85bcdcb32699a0bcdfc68d85c6c (diff) | |
serial: 8250: Add missing wakeup event reporting
[ Upstream commit 0ba9e3a13c6adfa99e32b2576d20820ab10ad48a ]
An 8250 UART configured as a wake-up source would not have reported
itself through sysfs as being the source of wake-up, correct that.
Fixes: b3b708fa2780 ("wake up from a serial port")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20230414170241.2016255-1-f.fainelli@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/8250/8250_port.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c index b82dce557c38..b8e8a96c3eb6 100644 --- a/drivers/tty/serial/8250/8250_port.c +++ b/drivers/tty/serial/8250/8250_port.c @@ -15,6 +15,7 @@ #include <linux/moduleparam.h> #include <linux/ioport.h> #include <linux/init.h> +#include <linux/irq.h> #include <linux/console.h> #include <linux/gpio/consumer.h> #include <linux/sysrq.h> @@ -1926,6 +1927,7 @@ static bool handle_rx_dma(struct uart_8250_port *up, unsigned int iir) int serial8250_handle_irq(struct uart_port *port, unsigned int iir) { struct uart_8250_port *up = up_to_u8250p(port); + struct tty_port *tport = &port->state->port; bool skip_rx = false; unsigned long flags; u16 status; @@ -1951,6 +1953,8 @@ int serial8250_handle_irq(struct uart_port *port, unsigned int iir) skip_rx = true; if (status & (UART_LSR_DR | UART_LSR_BI) && !skip_rx) { + if (irqd_is_wakeup_set(irq_get_irq_data(port->irq))) + pm_wakeup_event(tport->tty->dev, 0); if (!up->dma || handle_rx_dma(up, iir)) status = serial8250_rx_chars(up, status); } |