Any tty access should enable UART port first if it is idle.
Signed-off-by: Tero Kristo <t-kristo@xxxxxx>
---
drivers/tty/serial/omap-serial.c | 8 ++++++++
1 files changed, 8 insertions(+), 0 deletions(-)
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;
--
1.7.4.1
Texas Instruments Oy, Tekniikantie 12, 02150 Espoo. Y-tunnus: 0115040-6. Kotipaikka: Helsinki
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