[RFC/PATCH 10/13] serial: omap: stick to put_autosuspend
From: Felipe Balbi <hidden>
Date: 2012-08-21 09:20:41
Also in:
linux-arm-kernel, linux-omap, lkml
Subsystem:
the rest, tty layer and serial drivers · Maintainers:
Linus Torvalds, Greg Kroah-Hartman, Jiri Slaby
Everytime we're done using our TTY, we want the pm timer to be reinitilized. By sticking to pm_runtime_pm_autosuspend() we make sure that this will always be the case. Signed-off-by: Felipe Balbi <redacted> --- drivers/tty/serial/omap-serial.c | 33 ++++++++++++++++++++++----------- 1 file changed, 22 insertions(+), 11 deletions(-)
diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
index 6ea24c5..458d77c 100644
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c@@ -164,7 +164,8 @@ static void serial_omap_enable_ms(struct uart_port *port) pm_runtime_get_sync(up->dev); up->ier |= UART_IER_MSI; serial_out(up, UART_IER, up->ier); - pm_runtime_put(up->dev); + pm_runtime_mark_last_busy(up->dev); + pm_runtime_put_autosuspend(up->dev); } static void serial_omap_stop_tx(struct uart_port *port)
@@ -412,7 +413,8 @@ static unsigned int serial_omap_tx_empty(struct uart_port *port) spin_lock_irqsave(&up->port.lock, flags); ret = serial_in(up, UART_LSR) & UART_LSR_TEMT ? TIOCSER_TEMT : 0; spin_unlock_irqrestore(&up->port.lock, flags); - pm_runtime_put(up->dev); + pm_runtime_mark_last_busy(up->dev); + pm_runtime_put_autosuspend(up->dev); return ret; }
@@ -424,7 +426,8 @@ static unsigned int serial_omap_get_mctrl(struct uart_port *port) pm_runtime_get_sync(up->dev); status = check_modem_status(up); - pm_runtime_put(up->dev); + pm_runtime_mark_last_busy(up->dev); + pm_runtime_put_autosuspend(up->dev); dev_dbg(up->port.dev, "serial_omap_get_mctrl+%d\n", up->port.line);
@@ -460,7 +463,8 @@ static void serial_omap_set_mctrl(struct uart_port *port, unsigned int mctrl) up->mcr = serial_in(up, UART_MCR); up->mcr |= mcr; serial_out(up, UART_MCR, up->mcr); - pm_runtime_put(up->dev); + pm_runtime_mark_last_busy(up->dev); + pm_runtime_put_autosuspend(up->dev); } static void serial_omap_break_ctl(struct uart_port *port, int break_state)
@@ -477,7 +481,8 @@ static void serial_omap_break_ctl(struct uart_port *port, int break_state) up->lcr &= ~UART_LCR_SBC; serial_out(up, UART_LCR, up->lcr); spin_unlock_irqrestore(&up->port.lock, flags); - pm_runtime_put(up->dev); + pm_runtime_mark_last_busy(up->dev); + pm_runtime_put_autosuspend(up->dev); } static int serial_omap_startup(struct uart_port *port)
@@ -575,7 +580,8 @@ static void serial_omap_shutdown(struct uart_port *port) if (serial_in(up, UART_LSR) & UART_LSR_DR) (void) serial_in(up, UART_RX); - pm_runtime_put(up->dev); + pm_runtime_mark_last_busy(up->dev); + pm_runtime_put_autosuspend(up->dev); free_irq(up->port.irq, up); }
@@ -846,7 +852,8 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios, serial_omap_configure_xonxoff(up, termios); spin_unlock_irqrestore(&up->port.lock, flags); - pm_runtime_put(up->dev); + pm_runtime_mark_last_busy(up->dev); + pm_runtime_put_autosuspend(up->dev); dev_dbg(up->port.dev, "serial_omap_set_termios+%d\n", up->port.line); }
@@ -877,7 +884,8 @@ serial_omap_pm(struct uart_port *port, unsigned int state, pm_runtime_allow(up->dev); } - pm_runtime_put(up->dev); + pm_runtime_mark_last_busy(up->dev); + pm_runtime_put_autosuspend(up->dev); } static void serial_omap_release_port(struct uart_port *port)
@@ -959,7 +967,8 @@ static void serial_omap_poll_put_char(struct uart_port *port, unsigned char ch) pm_runtime_get_sync(up->dev); wait_for_xmitr(up); serial_out(up, UART_TX, ch); - pm_runtime_put(up->dev); + pm_runtime_mark_last_busy(up->dev); + pm_runtime_put_autosuspend(up->dev); } static int serial_omap_poll_get_char(struct uart_port *port)
@@ -973,7 +982,8 @@ static int serial_omap_poll_get_char(struct uart_port *port) return NO_POLL_CHAR; status = serial_in(up, UART_RX); - pm_runtime_put(up->dev); + pm_runtime_mark_last_busy(up->dev); + pm_runtime_put_autosuspend(up->dev); return status; }
@@ -1305,7 +1315,8 @@ static int serial_omap_probe(struct platform_device *pdev) if (ret != 0) goto err_add_port; - pm_runtime_put(&pdev->dev); + pm_runtime_mark_last_busy(up->dev); + pm_runtime_put_autosuspend(up->dev); platform_set_drvdata(pdev, up); return 0;
--
1.7.12.rc3