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| author | Florian Fainelli <f.fainelli@gmail.com> | 2023-04-14 10:02:39 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-05-17 11:13:17 +0200 |
| commit | 0bd49a043c7984c93c2a0af41222fb71c3986a4e (patch) | |
| tree | fc722b9fa65e1f472034ae8173219c1759b11277 /drivers/tty | |
| parent | b25186b6529dcbed6944f25d2f5fb101394839fa (diff) | |
| download | linux-stable-0bd49a043c7984c93c2a0af41222fb71c3986a4e.tar.gz linux-stable-0bd49a043c7984c93c2a0af41222fb71c3986a4e.tar.bz2 linux-stable-0bd49a043c7984c93c2a0af41222fb71c3986a4e.zip | |
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 ce266e10a21e..81574efff3c1 100644 --- a/drivers/tty/serial/8250/8250_port.c +++ b/drivers/tty/serial/8250/8250_port.c @@ -19,6 +19,7 @@ #include <linux/moduleparam.h> #include <linux/ioport.h> #include <linux/init.h> +#include <linux/irq.h> #include <linux/console.h> #include <linux/sysrq.h> #include <linux/delay.h> @@ -1885,6 +1886,7 @@ int serial8250_handle_irq(struct uart_port *port, unsigned int iir) unsigned char status; unsigned long flags; struct uart_8250_port *up = up_to_u8250p(port); + struct tty_port *tport = &port->state->port; bool skip_rx = false; if (iir & UART_IIR_NO_INT) @@ -1908,6 +1910,8 @@ 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); } |