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| author | Felix Fietkau <nbd@openwrt.org> | 2013-07-09 12:52:00 +0000 |
|---|---|---|
| committer | Felix Fietkau <nbd@openwrt.org> | 2013-07-09 12:52:00 +0000 |
| commit | 5470f607c6218d4efea686f7fee48ea7d5bc6098 (patch) | |
| tree | 9a728b981899a4b5d13af91182ce05650076033a /target/linux/generic/patches-3.9 | |
| parent | dec70a46539145ec5485ffbc409f389f142f217f (diff) | |
| download | upstream-5470f607c6218d4efea686f7fee48ea7d5bc6098.tar.gz upstream-5470f607c6218d4efea686f7fee48ea7d5bc6098.tar.bz2 upstream-5470f607c6218d4efea686f7fee48ea7d5bc6098.zip | |
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 <nbd@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@37210 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/generic/patches-3.9')
| -rw-r--r-- | target/linux/generic/patches-3.9/890-8250_optional_sysrq.patch | 24 |
1 files changed, 24 insertions, 0 deletions
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 0000000000..fcfffbb668 --- /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 |