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Subject[PATCH 5/6] pch_uart: Fix return value issue
Date
Currently, occurring line status interrupt,
returned value is not set in interrupt handler function.
As a result, 0 can be returned.

This patch adds setting returned value.

Signed-off-by: Tomoya MORINAGA <tomoya.rohm@gmail.com>
---
drivers/tty/serial/pch_uart.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index 6cf71f1..8c750d8 100644
--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -35,6 +35,7 @@ enum {
PCH_UART_HANDLED_RX_ERR_INT_SHIFT,
PCH_UART_HANDLED_RX_TRG_INT_SHIFT,
PCH_UART_HANDLED_MS_INT_SHIFT,
+ PCH_UART_HANDLED_LS_INT_SHIFT,
};

enum {
@@ -59,6 +60,8 @@ enum {
PCH_UART_HANDLED_RX_TRG_INT_SHIFT)<<1))
#define PCH_UART_HANDLED_MS_INT (1<<((PCH_UART_HANDLED_MS_INT_SHIFT)<<1))

+#define PCH_UART_HANDLED_LS_INT (1<<((PCH_UART_HANDLED_LS_INT_SHIFT)<<1))
+
#define PCH_UART_RBR 0x00
#define PCH_UART_THR 0x00

@@ -968,6 +971,8 @@ static irqreturn_t pch_uart_interrupt(int irq, void *dev_id)
UART_LSR_PE | UART_LSR_OE)) {
pch_uart_err_ir(priv, lsr);
ret = PCH_UART_HANDLED_RX_ERR_INT;
+ } else {
+ ret = PCH_UART_HANDLED_LS_INT;
}
break;
case PCH_UART_IID_RDR: /* Received Data Ready */
--
1.7.4.4


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