Marek Roszko 8bc661bfc0 tty/serial: at91: disable uart timer at start of shutdown ...

The uart timer will schedule a tasklet when it fires. It is possible that it
can fire inside _shutdown before it is killed in the dma and pdc cleanup
routines. This causes a tasklet that exists after the port is shutdown, so when
the kernel finally executes it, it panics as the tty port is NULL.

This is a somewhat rare condition but its possible if a program keeps on
opening/closing the port. It has been observed in particular with systemd
boot messages that were causing a kernel panic because of this behavior.

Moving the timer deletion to the beginning of the function stops a tasklet from
being scheduled unexpectedly.

Signed-off-by: Marek Roszko <mark.roszko@gmail.com>
Cc: stable <stable@vger.kernel.org> # v3.12
[nicolas.ferre@atmel.com: modify commit message, call setup_timer() in any case]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2014-01-13 15:55:59 -08:00

..

8250

serial: 8250: enable UART_BUG_NOMSR for Tegra

2014-01-07 17:14:24 -08:00

cpm_uart

tty: delete non-required instances of include <linux/init.h>

2014-01-07 17:05:21 -08:00

jsm

TTY: jsm, remove superfluous check

2013-03-18 16:17:20 -07:00

21285.c

TTY: switch tty_flip_buffer_push

2013-01-15 22:30:15 -08:00

68328serial.c

Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu

2013-05-10 07:22:35 -07:00

altera_jtaguart.c

Merge tag 'dt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

2013-09-06 13:26:27 -07:00

altera_uart.c

Merge tag 'dt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

2013-09-06 13:26:27 -07:00

amba-pl010.c

serial: pl010: Convert to modern PM ops

2013-12-08 17:09:07 -08:00

amba-pl011.c

serial: pl011: fix fall back from DMA to interrupt mode

2013-12-17 09:36:23 -08:00

apbuart.c

tty: serial: apbuart: drop uart_port->lock before calling tty_flip_buffer_push()

2013-08-27 16:17:33 -07:00

apbuart.h

tty: move drivers/serial/ to drivers/tty/serial/

2011-01-13 12:10:18 -08:00

ar933x_uart.c

tty: ar933x_uart: add device tree support and binding documentation

2013-08-30 14:11:27 -07:00

arc_uart.c

serial: arc_uart: Remove casting the return value which is a void pointer

2013-09-26 14:29:58 -07:00

atmel_serial.c

tty/serial: at91: disable uart timer at start of shutdown

2014-01-13 15:55:59 -08:00

bcm63xx_uart.c

tty: serial: bcm63xx: drop uart_port->lock before calling tty_flip_buffer_push()

2013-08-27 16:17:34 -07:00

bfin_sport_uart.c

serial: bfin_sport_uart: Remove casting the return value which is a void pointer

2013-09-26 14:29:58 -07:00

bfin_sport_uart.h

tty: bfin-sport-uart: Rx interrupt is not called always with irq disabled.

2011-12-09 19:05:33 -08:00

bfin_uart.c

tty: Remove unnecessary semicolons

2013-10-16 13:08:16 -07:00

clps711x.c

serial: clps711x: Enable driver compilation with COMPILE_TEST

2014-01-07 17:06:18 -08:00

crisv10.c

crisv10: use counts from tty_port

2013-03-18 16:26:33 -07:00

crisv10.h

crisv10: use counts from tty_port

2013-03-18 16:26:33 -07:00

dz.c

TTY: switch tty_flip_buffer_push

2013-01-15 22:30:15 -08:00

dz.h

tty: move drivers/serial/ to drivers/tty/serial/

2011-01-13 12:10:18 -08:00

efm32-uart.c

tty: serial: efm32: drop uart_port->lock before calling tty_flip_buffer_push()

2013-08-27 16:17:34 -07:00

fsl_lpuart.c

serial: fsl_lpuart: Return proper error on lpuart_serial_init error path

2013-07-26 16:01:20 -07:00

icom.c

serial: icom: move array overflow checks earlier

2013-08-27 16:24:33 -07:00

icom.h

tty: move drivers/serial/ to drivers/tty/serial/

2011-01-13 12:10:18 -08:00

ifx6x60.c

serial: ifx6x60: Remove casting the return value which is a void pointer

2013-09-26 14:29:58 -07:00

ifx6x60.h

serial:ifx6x60:Prevent data transfer when IFX6x60 port is shutdown

2012-11-01 08:50:01 -07:00

imx.c

serial: imx: add support for loopback mode.

2013-12-08 17:09:07 -08:00

ioc3_serial.c

TTY: switch tty_flip_buffer_push

2013-01-15 22:30:15 -08:00

ioc4_serial.c

serial: ioc4_serial: Staticize ioc4_serial_attach_one()

2013-08-12 11:35:32 -07:00

ip22zilog.c

tty: Remove unnecessary semicolons

2013-10-16 13:08:16 -07:00

ip22zilog.h

tty: move drivers/serial/ to drivers/tty/serial/

2011-01-13 12:10:18 -08:00

Kconfig

serial: clps711x: Enable driver compilation with COMPILE_TEST

2014-01-07 17:06:18 -08:00

kgdb_nmi.c

tty: delete non-required instances of include <linux/init.h>

2014-01-07 17:05:21 -08:00

kgdboc.c

treewide: Convert retrun typos to return

2013-09-04 12:26:36 +02:00

lantiq.c

serial: MIPS: lantiq: fix clock error check

2013-08-12 11:37:48 -07:00

lpc32xx_hs.c

tty: serial: lpc32xx_hs: drop uart_port->lock before calling tty_flip_buffer_push()

2013-08-27 16:17:34 -07:00

m32r_sio_reg.h

m32r: relocate drivers back out of 8250 dir

2012-02-08 15:04:32 -08:00

m32r_sio.c

tty: serial: m32r_sio: drop uart_port->lock before calling tty_flip_buffer_push()

2013-08-27 16:17:34 -07:00

m32r_sio.h

TTY: serial, include pci.h in m32r_sio

2012-03-08 11:47:02 -08:00

Makefile

serial: Remove old SC26XX driver

2013-12-19 12:34:30 -08:00

max310x.c

tty: Remove unnecessary semicolons

2013-10-16 13:08:16 -07:00

max3100.c

serial: use dev_get_platdata()

2013-07-31 17:56:15 -07:00

mcf.c

tty: serial: mcf: drop uart_port->lock before calling tty_flip_buffer_push()

2013-08-27 16:17:34 -07:00

mfd.c

serial: mfd: Staticize local symbols

2013-10-29 16:34:11 -07:00

mpc52xx_uart.c

serial: mpc52xx: remove reference to .set_wake()

2013-10-16 13:16:19 -07:00

mpsc.c

serial: mpsc: Remove casting the return value which is a void pointer

2013-09-26 14:29:58 -07:00

mrst_max3110.c

mrst_max3110: fix unbalanced IRQ issue during resume

2013-10-29 16:26:54 -07:00

mrst_max3110.h

max3110: add sysrq support

2011-08-26 11:01:15 -07:00

msm_serial_hs.c

serial: use dev_get_platdata()

2013-07-31 17:56:15 -07:00

msm_serial.c

msm_serial: Send more than 1 character on the console w/ UARTDM

2013-08-27 16:22:59 -07:00

msm_serial.h

msm_serial: Make baud_code detection more dynamic

2013-07-26 16:13:29 -07:00

msm_smd_tty.c

TTY: msm_smd_tty, clean up activate/shutdown

2013-03-18 16:19:44 -07:00

mux.c

TTY: switch tty_flip_buffer_push

2013-01-15 22:30:15 -08:00

mxs-auart.c

tty: serial: mxs-auart: Check the return value from clk_prepare_enable()

2013-12-08 17:14:58 -08:00

netx-serial.c

tty: serial: netx: drop uart_port->lock before calling tty_flip_buffer_push()

2013-08-27 16:17:34 -07:00

nwpserial.c

tty: serial: nwpserial: drop uart_port->lock before calling tty_flip_buffer_push()

2013-08-27 16:17:35 -07:00

of_serial.c

tty: delete non-required instances of include <linux/init.h>

2014-01-07 17:05:21 -08:00

omap-serial.c

serial: omap: fix missing comma

2013-10-31 09:03:20 -07:00

pch_uart.c

tty: remove DEFINE_PCI_DEVICE_TABLE macro

2013-12-08 17:09:07 -08:00

pmac_zilog.c

TTY: pmac_zilog, check existence of ports in pmz_console_init()

2013-11-25 08:54:25 -08:00

pmac_zilog.h

tty/serial/pmac_zilog: Fix suspend & resume

2011-12-16 11:10:01 +11:00

pnx8xxx_uart.c

tty: serial: pnx8xxx: drop uart_port->lock before calling tty_flip_buffer_push()

2013-08-27 16:17:35 -07:00

pxa.c

serial: pxa: Staticize local symbols

2013-08-12 11:10:16 -07:00

rp2.c

tty: remove DEFINE_PCI_DEVICE_TABLE macro

2013-12-08 17:09:07 -08:00

sa1100.c

serial: sa1100: delete .set_wake callback

2013-10-16 13:16:18 -07:00

samsung.c

serial: samsung: add support for manual RTS setting

2013-09-26 15:41:38 -07:00

samsung.h

serial: samsung: Remove casting the return value which is a void pointer

2013-09-26 14:29:59 -07:00

sb1250-duart.c

TTY: switch tty_flip_buffer_push

2013-01-15 22:30:15 -08:00

sccnxp.c

serial: sccnxp: missing uart_unregister_driver() on error in sccnxp_probe()

2013-09-26 15:44:45 -07:00

serial_core.c

serial_core: Don't re-initialize a previously initialized spinlock.

2013-12-08 16:44:21 -08:00

serial_ks8695.c

TTY: switch tty_flip_buffer_push

2013-01-15 22:30:15 -08:00

serial_txx9.c

serial: txx9: remove unnecessary pci_set_drvdata()

2013-09-26 15:41:38 -07:00

serial-tegra.c

serial: tegra: remove deprecated IRQF_DISABLED

2013-10-07 00:13:58 -07:00

sh-sci.c

serial: sh: use DMA_COMPLETE for dma completion status

2013-10-25 11:16:19 +05:30

sh-sci.h

serial: sh-sci: remove obsolete Kconfig macros

2013-03-25 14:06:45 -07:00

sirfsoc_uart.c

serial: sirf: correct condition for fetching dma buffer into tty

2014-01-07 17:09:04 -08:00

sirfsoc_uart.h

serial: sirf: remove duplicate defines

2013-10-29 16:26:54 -07:00

sn_console.c

TTY: switch tty_flip_buffer_push

2013-01-15 22:30:15 -08:00

st-asc.c

serial: st-asc: remove unnecessary platform_set_drvdata()

2013-08-27 16:24:33 -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

serial: use platform_{get,set}_drvdata()

2013-06-03 10:21:33 -07:00

sunsab.c

tty: Remove unnecessary semicolons

2013-10-16 13:08:16 -07:00

sunsab.h

tty: move drivers/serial/ to drivers/tty/serial/

2011-01-13 12:10:18 -08:00

sunsu.c

tty: Remove unnecessary semicolons

2013-10-16 13:08:16 -07:00

sunzilog.c

tty: Remove unnecessary semicolons

2013-10-16 13:08:16 -07:00

sunzilog.h

tty: move drivers/serial/ to drivers/tty/serial/

2011-01-13 12:10:18 -08:00

tilegx.c

tilegx: Add tty serial support for TILE-Gx on-chip UART

2013-09-03 14:50:40 -04:00

timbuart.c

serial: timbuart: Staticize local symbols

2013-08-12 11:35:31 -07:00

timbuart.h

tty: move drivers/serial/ to drivers/tty/serial/

2011-01-13 12:10:18 -08:00

uartlite.c

tty: serial: uartlite: Support uartlite on big and little endian systems

2013-02-13 08:38:45 -08:00

ucc_uart.c

Merge tag 'devicetree-for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

2013-11-12 16:52:17 +09:00

vr41xx_siu.c

serial: use dev_get_platdata()

2013-07-31 17:56:15 -07:00

vt8500_serial.c

serial: vt8500: add missing braces

2013-10-16 13:22:16 -07:00

xilinx_uartps.c

tty: xuartps: Properly guard sysrq specific code

2013-12-17 16:02:25 -08:00

zs.c

TTY: switch tty_flip_buffer_push

2013-01-15 22:30:15 -08:00

zs.h

tty: move drivers/serial/ to drivers/tty/serial/

2011-01-13 12:10:18 -08:00