The patch titled serial: avoid waking up closed serial ports on resume has been removed from the -mm tree. Its filename was avoid-waking-up-closed-serial-ports-on-resume.patch This patch was dropped because it was merged into mainline or a subsystem tree The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: serial: avoid waking up closed serial ports on resume From: Russell King <rmk+lkml@xxxxxxxxxxxxxxxx> When we boot, serial ports remain in low power mode until they're used either by userspace or for the kernel console. However, if you suspend the system, and then resume, all serial ports will be taken out of low power mode. This is bad news for embedded devices where this can mean higher power consumption. Only bring a serial port out of low power mode if the port is being used as the kernel console, or is in use by userspace. Signed-off-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxxx> Acked-by: Alan Cox <alan@xxxxxxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- drivers/serial/serial_core.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff -puN drivers/serial/serial_core.c~avoid-waking-up-closed-serial-ports-on-resume drivers/serial/serial_core.c --- a/drivers/serial/serial_core.c~avoid-waking-up-closed-serial-ports-on-resume +++ a/drivers/serial/serial_core.c @@ -2029,8 +2029,6 @@ int uart_resume_port(struct uart_driver } port->suspended = 0; - uart_change_pm(state, 0); - /* * Re-enable the console device after suspending. */ @@ -2049,6 +2047,7 @@ int uart_resume_port(struct uart_driver if (state->info && state->info->tty && termios.c_cflag == 0) termios = *state->info->tty->termios; + uart_change_pm(state, 0); port->ops->set_termios(port, &termios, NULL); console_start(port->cons); } @@ -2057,6 +2056,7 @@ int uart_resume_port(struct uart_driver const struct uart_ops *ops = port->ops; int ret; + uart_change_pm(state, 0); ops->set_mctrl(port, 0); ret = ops->startup(port); if (ret == 0) { _ Patches currently in -mm which might be from rmk+lkml@xxxxxxxxxxxxxxxx are origin.patch - To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html