Liang Li 5d2a2c7173 pch_uart: fix a deadlock when pch_uart as console ... commit 384e301e35 upstream. When we use pch_uart as system console like 'console=ttyPCH0,115200', then 'send break' to it. We'll encounter the deadlock on a cpu/core, with interrupts disabled on the core. When we happen to have all irqs affinity to cpu0 then the deadlock on cpu0 actually deadlock whole system. In pch_uart_interrupt, we have spin_lock_irqsave(&priv->lock, flags) then call pch_uart_err_ir when break is received. Then the call to dev_err would actually call to pch_console_write then we'll run into another spin_lock(&priv->lock), with interrupts disabled. So in the call sequence lead by pch_uart_interrupt, we should be carefully to call functions that will 'print message to console' only in case the uart port is not being used as serial console. Signed-off-by: Liang Li <liang.li@windriver.com> Cc: Yijing Wang <wangyijing@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2013-07-03 10:59:05 -07:00
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8250	serial: 8250_pci: add support for another kind of NetMos Technology PCI 9835 Multi-I/O Controller	2013-03-20 13:04:58 -07:00
cpm_uart
jsm
21285.c	Disintegrate asm/system.h for ARM	2012-03-28 18:30:01 +01:00
68328serial.c	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
68328serial.h
altera_jtaguart.c
altera_uart.c	tty: serial: altera_uart: Check for NULL platform_data in probe.	2012-04-09 10:30:39 -07:00
amba-pl010.c
amba-pl011.c	serial: pl011: handle corruption at high clock speeds	2012-10-07 08:32:25 -07:00
apbuart.c
apbuart.h
ar933x_uart.c
atmel_serial.c	tty: atmel_serial_probe(): index of atmel_ports[] fix	2013-04-05 10:04:18 -07:00
bcm63xx_uart.c
bfin_sport_uart.c
bfin_sport_uart.h
bfin_uart.c	serial: bfin-uart: Don't access tty circular buffer in TX DMA interrupt after it is reset.	2012-03-13 14:33:39 -07:00
clps711x.c	ARM: clps711x: serial driver hungs are a result of call disable_irq within ISR	2012-04-18 15:19:50 -07:00
crisv10.c	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
crisv10.h
dz.c	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
dz.h
efm32-uart.c
icom.c	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
icom.h
ifx6x60.c	serial:ifx6x60:Delete SPI timer when shut down port	2013-01-21 11:45:26 -08:00
ifx6x60.h
imx.c	tty: serial: imx: console write routing is unsafe on SMP	2012-10-02 10:30:21 -07:00
ioc3_serial.c
ioc4_serial.c	TTY: remove serialP.h inclusion from some files	2012-03-08 11:47:02 -08:00
ip22zilog.c
ip22zilog.h
Kconfig	tty: serial: fix typo "ARCH_S5P6450"	2013-03-20 13:04:59 -07:00
kgdboc.c
lantiq.c
m32r_sio.c	TTY: remove serialP.h inclusion from some files	2012-03-08 11:47:02 -08:00
m32r_sio.h	TTY: serial, include pci.h in m32r_sio	2012-03-08 11:47:02 -08:00
m32r_sio_reg.h
Makefile	Merge tag 'tty-3.3-rc3' tty-next	2012-02-10 10:25:27 -08:00
max3100.c
max3107.c
max3107.h
mcf.c
mfd.c	simple_open: automatically convert to simple_open()	2012-04-05 15:25:50 -07:00
mpc52xx_uart.c	mpc5200b/uart: select more tolerant uart prescaler on low baudrates	2012-03-08 13:15:50 -08:00
mpsc.c
mrst_max3110.c
mrst_max3110.h
msm_serial.c
msm_serial.h
msm_serial_hs.c	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
msm_smd_tty.c	TTY: remove re-assignments to tty_driver members	2012-03-08 11:37:58 -08:00
mux.c	tty/serial/mux.c: linux/tty.h included twice	2012-02-24 13:50:45 -08:00
mxs-auart.c	Add missing call to uart_update_timeout()	2012-06-01 15:18:20 +08:00
netx-serial.c
nwpserial.c
of_serial.c
omap-serial.c	Revert "serial: omap: fix software flow control"	2012-11-26 11:38:44 -08:00
pch_uart.c	pch_uart: fix a deadlock when pch_uart as console	2013-07-03 10:59:05 -07:00
pmac_zilog.c	pmac_zilog,kdb: Fix console poll hook to return instead of loop	2012-08-26 15:00:43 -07:00
pmac_zilog.h
pnx8xxx_uart.c
pxa.c	ARM: device tree work	2012-03-27 16:47:35 -07:00
sa1100.c	ARM: 7342/2: sa1100: prepare for sparse irq conversion	2012-03-25 23:57:20 +01:00
samsung.c	serial: samsung: fix omission initialize ulcon in reset port fn()	2012-04-09 10:30:39 -07:00
samsung.h
sb1250-duart.c
sc26xx.c
serial_core.c	serial_core.c: add put_device() after device_find_child()	2013-05-07 19:51:53 -07:00
serial_ks8695.c
serial_txx9.c
sh-sci.c	serial: sh-sci: use serial_port_in/out vs sci_in/out.	2012-03-30 19:50:15 +09:00
sh-sci.h	serial: sh-sci: use serial_port_in/out vs sci_in/out.	2012-03-30 19:50:15 +09:00
sirfsoc_uart.c	pinctrl: API changes to support multiple states per device	2012-03-05 11:22:59 +01:00
sirfsoc_uart.h	serial/sirf: fixup for changes to pin control	2012-02-22 17:59:12 +01:00
sn_console.c	Miscellaneous Itanium patches	2012-03-23 17:19:37 -07:00
suncore.c	tty: sparc: rename drivers/tty/serial/suncore.h -> include/linux/sunserialcore.h	2012-02-10 10:44:35 -08:00
sunhv.c	Disintegrate asm/system.h for Sparc	2012-03-28 18:30:03 +01:00
sunsab.c	Disintegrate asm/system.h for Sparc	2012-03-28 18:30:03 +01:00
sunsab.h
sunsu.c	sunsu: Fix panic in case of nonexistent port at "console=ttySY" cmdline option	2013-03-28 12:11:52 -07:00
sunzilog.c	serial/sunzilog: fix keyboard on SUN SPARCstation	2012-04-04 00:37:10 -07:00
sunzilog.h
timbuart.c
timbuart.h
uartlite.c
ucc_uart.c
vr41xx_siu.c
vt8500_serial.c	tty: serial: vt8500: fix annotations for probe/remove	2012-03-12 10:21:55 -07:00
xilinx_uartps.c
zs.c	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
zs.h