[PATCHv3,6/6] OMAP3: Serial tty: Added resume_idle calls to critical points

Commit Message

Tero Kristo June 22, 2011, 4:42 p.m. UTC

Any tty access should enable UART port first if it is idle.

Signed-off-by: Tero Kristo <[e-mail]>
---
 drivers/tty/serial/omap-serial.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

Patch

diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
index 47cadf4..bd6ae02 100644
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c
@@ -261,6 +261,8 @@  static void serial_omap_start_tx(struct uart_port *port)
 	unsigned int start;
 	int ret = 0;
 
+	omap_uart_resume_idle(up->pdev->id);
+
 	if (!up->use_dma) {
 		serial_omap_enable_ier_thri(up);
 		return;
@@ -354,6 +356,8 @@  static inline irqreturn_t serial_omap_irq(int irq, void *dev_id)
 	unsigned int iir, lsr;
 	unsigned long flags;
 
+	omap_uart_resume_idle(up->pdev->id);
+
 	iir = serial_in(up, UART_IIR);
 	if (iir & UART_IIR_NO_INT)
 		return IRQ_NONE;
@@ -641,6 +645,8 @@  serial_omap_set_termios(struct uart_port *port, struct ktermios *termios,
 	unsigned long flags = 0;
 	unsigned int baud, quot;
 
+	omap_uart_resume_idle(up->pdev->id);
+
 	switch (termios->c_cflag & CSIZE) {
 	case CS5:
 		cval = UART_LCR_WLEN5;
@@ -947,6 +953,8 @@  serial_omap_console_write(struct console *co, const char *s,
 	unsigned int ier;
 	int locked = 1;
 
+	omap_uart_resume_idle(up->pdev->id);
+
 	local_irq_save(flags);
 	if (up->port.sysrq)
 		locked = 0;