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linux/drivers/tty/serial
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Geert Uytterhoeven dc1dc2f8a5 TTY: pmac_zilog, check existence of ports in pmz_console_init() 
When booting a multi-platform m68k kernel on a non-Mac with "console=ttyS0"
on the kernel command line, it crashes with:

Unable to handle kernel NULL pointer dereference at virtual address   (null)
Oops: 00000000
PC: [<0013ad28>] __pmz_startup+0x32/0x2a0
...
Call Trace: [<002c5d3e>] pmz_console_setup+0x64/0xe4

The normal tty driver doesn't crash, because init_pmz() checks
pmz_ports_count again after calling pmz_probe().

In the serial console initialization path, pmz_console_init() doesn't do
this, causing the driver to crash later.

Add a check for pmz_ports_count to fix this.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Finn Thain <fthain@telegraphics.com.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2013-11-25 08:54:25 -08:00
..
8250 tty/serial/8250: fix typo in help text 2013-11-25 08:52:53 -08:00
cpm_uart Merge remote-tracking branch 'grant/devicetree/next' into for-next 2013-11-07 10:34:46 -06:00
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
Kconfig serial: sh-sci: Enable the driver on all ARM platforms 2013-10-29 17:01:02 -07:00
Makefile Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile 2013-09-06 11:14:33 -07:00
altera_jtaguart.c ARM: SoC DT updates for 3.12 2013-09-06 13:26:27 -07:00
altera_uart.c ARM: SoC DT updates for 3.12 2013-09-06 13:26:27 -07:00
amba-pl010.c serial: Remove unnecessary amba_set_drvdata() 2013-10-03 16:09:47 -07:00
amba-pl011.c serial: Remove unnecessary amba_set_drvdata() 2013-10-03 16:09:47 -07:00
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
…
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: add a fallback option to determine uart/usart property 2013-10-17 13:31:19 -07:00
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
…
bfin_uart.c tty: Remove unnecessary semicolons 2013-10-16 13:08:16 -07:00
clps711x.c serial: clps711x: drop needless devm_clk_put 2013-09-26 15:44:46 -07:00
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
…
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
…
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 TTY/Serial driver updates for 3.13-rc1 2013-11-07 12:17:06 +09:00
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
…
kgdb_nmi.c kgdb: remove #include <linux/serial_8250.h> from kgdb.h 2013-02-04 15:35:26 -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.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
…
m32r_sio_reg.h
…
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
…
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_serial_hs.c serial: use dev_get_platdata() 2013-07-31 17:56:15 -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 serial: mxs-auart: set the FIFO size to DMA buffer size 2013-10-05 18:03:01 -07:00
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 serial: use platform_{get,set}_drvdata() 2013-06-03 10:21:33 -07:00
omap-serial.c serial: omap: fix missing comma 2013-10-31 09:03:20 -07:00
pch_uart.c serial: pch_uart: remove reference to .set_wake() 2013-10-16 13:16:19 -07:00
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
…
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: serial: rp2: drop uart_port->lock before calling tty_flip_buffer_push() 2013-08-27 16:17:35 -07:00
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
sc26xx.c serial: use dev_get_platdata() 2013-07-31 17:56:15 -07:00
sccnxp.c serial: sccnxp: missing uart_unregister_driver() on error in sccnxp_probe() 2013-09-26 15:44:45 -07:00
serial-tegra.c serial: tegra: remove deprecated IRQF_DISABLED 2013-10-07 00:13:58 -07:00
serial_core.c serial: report base_baud after initialization 2013-07-26 16:03:05 -07:00
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
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: don't submit dma desc after timeout irqs occur 2013-09-26 15:41:39 -07:00
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
…
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
…
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
…
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
…
uartlite.c tty: serial: uartlite: Support uartlite on big and little endian systems 2013-02-13 08:38:45 -08:00
ucc_uart.c DeviceTree updates for 3.13. This is a bit larger pull request than 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: Fix build error when COMMON_CLK is not set 2013-10-29 09:26:11 -07:00
zs.c TTY: switch tty_flip_buffer_push 2013-01-15 22:30:15 -08:00
zs.h
…