From 51b1e8577c8edc2108060d5e5e81db41c81b1081 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Tue, 9 Jul 2013 12:52:00 +0000 Subject: kernel: do not accept sysrq characters via serial port many boards have a disconnected TTL level serial which can generate some garbage that can lead to spurious false sysrq detects. Signed-off-by: Felix Fietkau SVN-Revision: 37210 --- .../patches-3.9/890-8250_optional_sysrq.patch | 24 ++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 target/linux/generic/patches-3.9/890-8250_optional_sysrq.patch (limited to 'target/linux/generic/patches-3.9') diff --git a/target/linux/generic/patches-3.9/890-8250_optional_sysrq.patch b/target/linux/generic/patches-3.9/890-8250_optional_sysrq.patch new file mode 100644 index 0000000..fcfffbb --- /dev/null +++ b/target/linux/generic/patches-3.9/890-8250_optional_sysrq.patch @@ -0,0 +1,24 @@ +--- a/drivers/tty/serial/8250/8250_core.c ++++ b/drivers/tty/serial/8250/8250_core.c +@@ -16,7 +16,7 @@ + * membase is an 'ioremapped' cookie. + */ + +-#if defined(CONFIG_SERIAL_8250_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) ++#if defined(CONFIG_SERIAL_8250_SYSRQ) && defined(CONFIG_MAGIC_SYSRQ) + #define SUPPORT_SYSRQ + #endif + +--- a/drivers/tty/serial/8250/Kconfig ++++ b/drivers/tty/serial/8250/Kconfig +@@ -91,6 +91,10 @@ config SERIAL_8250_CONSOLE + + If unsure, say N. + ++config SERIAL_8250_SYSRQ ++ bool "Magic sysrq support on 8250/16550 devices" ++ depends on SERIAL_8250_CONSOLE ++ + config FIX_EARLYCON_MEM + bool + depends on X86 -- cgit v1.1