In a next change we are going to need the same Rx timeout condition as
we already have in the IRQ handling code. Let's just create a boolean to
clarify what this operation does before reusing it.
There is no functional change.
Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
drivers/tty/serial/8250/8250_dw.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
index babf5dc597a8..238bcdf1bab0 100644
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -225,6 +225,7 @@ static int dw8250_handle_irq(struct uart_port *p)
struct uart_8250_port *up = up_to_u8250p(p);
struct dw8250_data *d = to_dw8250_data(p->private_data);
unsigned int iir = p->serial_in(p, UART_IIR);
+ bool rx_timeout = (iir & 0x3f) == UART_IIR_RX_TIMEOUT;
unsigned int status;
unsigned long flags;
@@ -238,7 +239,7 @@ static int dw8250_handle_irq(struct uart_port *p)
* This problem has only been observed so far when not in DMA mode
* so we limit the workaround only to non-DMA mode.
*/
- if (!up->dma && ((iir & 0x3f) == UART_IIR_RX_TIMEOUT)) {
+ if (!up->dma && rx_timeout) {
spin_lock_irqsave(&p->lock, flags);
status = p->serial_in(p, UART_LSR);
--
2.27.0
