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Commit 04e2c2e3 authored by Tomoya MORINAGA's avatar Tomoya MORINAGA Committed by Greg Kroah-Hartman
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pch_uart: Fix return value issue 



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: default avatarTomoya MORINAGA <tomoya.rohm@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 159d4e1e

drivers/tty/serial/pch_uart.c

+5 −0
Original line number Diff line number Diff line
@@ -39,6 +39,7 @@ 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 {
@@ -63,6 +64,8 @@ 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
@@ -1058,6 +1061,8 @@ 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 */