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| author | Felipe Balbi <balbi@ti.com> | 2012-09-06 15:45:25 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-09-06 09:17:01 -0700 |
| commit | bf63a0862c964f9015d0d8e3c2ccca7005eebea2 (patch) | |
| tree | 356ebd94bc1d288ce84bf04f5d34889511efd711 | |
| parent | 72256cbd13904d4b4dbb16f5ec83a3293bb292c5 (diff) | |
| download | linux-bf63a0862c964f9015d0d8e3c2ccca7005eebea2.tar.gz linux-bf63a0862c964f9015d0d8e3c2ccca7005eebea2.tar.bz2 linux-bf63a0862c964f9015d0d8e3c2ccca7005eebea2.zip | |
serial: omap: move THRE check to transmit_chars()
since all other IRQ types now do all necessary
checks inside their handlers, transmit_chars()
was the only one left expecting serial_omap_irq()
to check THRE for it. We can move THRE check to
transmit_chars() in order to make serial_omap_irq()
more uniform.
Tested-by: Shubhrajyoti D <shubhrajyoti@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/tty/serial/omap-serial.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c index 9c0a4ae97e65..d3fbb70a8e8a 100644 --- a/drivers/tty/serial/omap-serial.c +++ b/drivers/tty/serial/omap-serial.c @@ -196,11 +196,14 @@ static void serial_omap_stop_rx(struct uart_port *port) pm_runtime_put_autosuspend(up->dev); } -static void transmit_chars(struct uart_omap_port *up) +static void transmit_chars(struct uart_omap_port *up, unsigned int lsr) { struct circ_buf *xmit = &up->port.state->xmit; int count; + if (!(lsr & UART_LSR_THRE)) + return; + if (up->port.x_char) { serial_out(up, UART_TX, up->port.x_char); up->port.icount.tx++; @@ -370,8 +373,7 @@ static inline irqreturn_t serial_omap_irq(int irq, void *dev_id) check_modem_status(up); break; case UART_IIR_THRI: - if (lsr & UART_LSR_THRE) - transmit_chars(up); + transmit_chars(up, lsr); break; case UART_IIR_RX_TIMEOUT: /* FALLTHROUGH */ |