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079317a65d
linux/drivers/tty/serial
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Vijay Kumar 079317a65d tty/serial: Skip 'NULL' char after console break when sysrq enabled 
When sysrq is triggered from console, serial driver for SUN hypervisor
console receives a console break and enables the sysrq. It expects a valid
sysrq char following with break. Meanwhile if driver receives 'NULL'
ASCII char then it disables sysrq and sysrq handler will never be invoked.

This fix skips calling uart sysrq handler when 'NULL' is received while
sysrq is enabled.

Signed-off-by: Vijay Kumar <vijay.ac.kumar@oracle.com>
Acked-by: Karl Volz <karl.volz@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-12-24 12:13:37 -05:00
..
8250 serial: export fsl8250_handle_irq 2015-11-20 16:19:54 -08:00
cpm_uart tty: serial: cpm_uart: Fix module autoload for OF platform driver 2015-10-04 19:09:21 +01:00
jsm
21285.c
68328serial.c tty: Remove tty_port::close_wait 2015-10-17 21:11:29 -07:00
altera_jtaguart.c
altera_uart.c serial: altera_uart: Use of_property_read_u32 instead of open-coding it 2015-10-04 17:47:49 +01:00
amba-pl010.c
amba-pl011.c serial: amba-pl011: fix incorrect integer size in pl011_fifo_to_tty() 2015-10-17 21:29:21 -07:00
apbuart.c tty: serial: apbuart: Fix module autoload for OF platform driver 2015-10-04 19:09:21 +01:00
apbuart.h
ar933x_uart.c
arc_uart.c
atmel_serial.c serial: at91, fix rs485 properties 2015-10-17 21:14:06 -07:00
bcm63xx_uart.c bcm63xx_uart: Use the device name when registering an interrupt 2015-11-20 16:19:54 -08:00
bfin_sport_uart.c
bfin_sport_uart.h
bfin_uart.c
clps711x.c serial: mctrl-gpio: rename init function 2015-10-04 18:46:43 +01:00
crisv10.c tty: Remove tty_port::close_wait 2015-10-17 21:11:29 -07:00
crisv10.h
digicolor-usart.c
dz.c
dz.h
earlycon-arm-semihost.c
earlycon.c
efm32-uart.c
etraxfs-uart.c serial: etraxfs-uart: Fix crash 2015-11-20 16:19:54 -08:00
fsl_lpuart.c serial: fsl_lpuart: add earlycon support 2015-10-17 21:18:30 -07:00
icom.c
icom.h
ifx6x60.c spi: Drop owner assignment from spi_drivers 2015-10-28 10:30:17 +09:00
ifx6x60.h
imx.c Merge 4.3-rc5 into tty-next 2015-10-12 10:54:35 -07:00
ioc3_serial.c
ioc4_serial.c
ip22zilog.c
ip22zilog.h
Kconfig serial: fsl_lpuart: Fix earlycon support 2015-11-20 16:19:54 -08:00
kgdb_nmi.c
kgdboc.c
lantiq.c drivers/tty: make serial/lantic.c driver explicitly non-modular 2015-07-23 18:27:41 -07:00
lpc32xx_hs.c tty: serial: lpc32xx_hs: fix handling platform_get_irq result 2015-10-04 19:09:21 +01:00
m32r_sio_reg.h
m32r_sio.c
m32r_sio.h
Makefile
max310x.c spi: Drop owner assignment from spi_drivers 2015-10-28 10:30:17 +09:00
max3100.c spi: Drop owner assignment from spi_drivers 2015-10-28 10:30:17 +09:00
mcf.c
men_z135_uart.c tty: serial: men_z135_uart.c: use mcb memory region size instead of hardcoded one 2015-10-17 21:05:43 -07:00
meson_uart.c
mpc52xx_uart.c serial: mpc52xx: add delay after resetting transmitter to fix broken chars 2015-10-04 17:27:56 +01:00
mpsc.c tty: disable unbind for old 74xx based serial/mpsc console port 2015-10-17 21:18:30 -07:00
msm_serial.c tty: serial: msm: Remove 115.2 Kbps maximum baud rate limitation 2015-10-04 19:15:17 +01:00
msm_serial.h tty: serial: msm: Add RX DMA support 2015-10-04 19:15:17 +01:00
mux.c parisc: serial/mux: Convert to uart_console_device instead of open-coded 2015-10-22 15:44:28 +02:00
mxs-auart.c serial: mctrl-gpio: rename init function 2015-10-04 18:46:43 +01:00
netx-serial.c
nwpserial.c
of_serial.c serial: Enable Freescale 16550 workaround on arm 2015-10-17 21:05:46 -07:00
omap-serial.c serial: omap: remove warnings about unused functions 2015-10-04 19:14:26 +01:00
pch_uart.c
pmac_zilog.c
pmac_zilog.h
pnx8xxx_uart.c
pxa.c
rp2.c
sa1100.c
samsung.c serial: samsung: Fix UART status handling in DMA mode 2015-10-04 17:44:52 +01:00
samsung.h serial: samsung: fix DMA mode enter condition for small FIFO sizes 2015-08-04 22:07:23 -07:00
sb1250-duart.c
sc16is7xx.c spi: Updates for v4.4 2015-11-05 13:15:12 -08:00
sccnxp.c
serial_core.c tty: Remove tty_port::close_wait 2015-10-17 21:11:29 -07:00
serial_ks8695.c
serial_mctrl_gpio.c serial: mctrl_gpio: implement interrupt handling 2015-10-04 18:47:51 +01:00
serial_mctrl_gpio.h serial: fix mctrl helper functions 2015-10-17 21:21:07 -07:00
serial_txx9.c
serial-tegra.c serial: tegra: Add helper function for handling RX buffer 2015-10-17 21:07:57 -07:00
sh-sci.c serial: sh-sci: Add DT support to DMA setup 2015-10-04 17:36:10 +01:00
sh-sci.h serial: sh-sci: Correct SCIF_ERROR_CLEAR for plain SCIF 2015-10-04 17:33:48 +01:00
sirfsoc_uart.c serial: sirf: let uart's receive start in right place 2015-07-23 15:32:04 -07:00
sirfsoc_uart.h serial: sirf: let uart's receive start in right place 2015-07-23 15:32:04 -07:00
sn_console.c drivers/tty: make serial/sn_console.c driver explicitly non-modular 2015-07-23 18:27:41 -07:00
sprd_serial.c tty: serial: sprd: Fix module autoload for OF platform driver 2015-10-04 19:09:21 +01:00
st-asc.c tty/serial: st-asc: drop the use of IRQF_NO_SUSPEND 2015-10-04 19:11:05 +01:00
stm32-usart.c tty/serial: st-asc: drop the use of IRQF_NO_SUSPEND 2015-10-04 19:11:05 +01:00
suncore.c drivers/tty: make serial/suncore.c driver explicitly non-modular 2015-07-23 18:27:41 -07:00
sunhv.c tty/serial: Skip 'NULL' char after console break when sysrq enabled 2015-12-24 12:13:37 -05:00
sunsab.c
sunsab.h
sunsu.c
sunzilog.c
sunzilog.h
tilegx.c
timbuart.c
timbuart.h
uartlite.c
ucc_uart.c serial/uuc_uart: Support higher bitrates than 115200 Bit/s 2015-07-23 18:05:00 -07:00
vr41xx_siu.c
vt8500_serial.c
xilinx_uartps.c
zs.c
zs.h