From: Russell King <rmk@dyn-67.arm.linux.org.uk>
Date: Tue, 27 Dec 2005 11:10:34 +0000 (+0000)
Subject: [SERIAL] Fix AMBA PL011 sysrq character handling
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=a710ce08585e920740ffc84c7f3c82f4081169cf;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

[SERIAL] Fix AMBA PL011 sysrq character handling

We only want the received character without the status bits for
sysrq handling.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

diff --git a/drivers/serial/amba-pl011.c b/drivers/serial/amba-pl011.c
index 89d7bd3eaee3..d84476ee6592 100644
--- a/drivers/serial/amba-pl011.c
+++ b/drivers/serial/amba-pl011.c
@@ -160,7 +160,7 @@ pl011_rx_chars(struct uart_amba_port *uap)
 				flag = TTY_FRAME;
 		}
 
-		if (uart_handle_sysrq_char(&uap->port, ch, regs))
+		if (uart_handle_sysrq_char(&uap->port, ch & 255, regs))
 			goto ignore_char;
 
 		uart_insert_char(&uap->port, ch, UART011_DR_OE, ch, flag);