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cb29529ea0
linux/drivers/tty
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Tkhai Kirill cb29529ea0 sunsu: Fix panic in case of nonexistent port at "console=ttySY" cmdline option 
If a machine has X (X < 4) sunsu ports and cmdline
option "console=ttySY" is passed, where X < Y <= 4,
than the following panic happens:

Unable to handle kernel NULL pointer dereference
TPC: <sunsu_console_setup+0x78/0xe0>
RPC: <sunsu_console_setup+0x74/0xe0>
I7: <register_console+0x378/0x3e0>
Call Trace:
 [0000000000453a38] register_console+0x378/0x3e0
 [0000000000576fa0] uart_add_one_port+0x2e0/0x340
 [000000000057af40] su_probe+0x160/0x2e0
 [00000000005b8a4c] platform_drv_probe+0xc/0x20
 [00000000005b6c2c] driver_probe_device+0x12c/0x220
 [00000000005b6da8] __driver_attach+0x88/0xa0
 [00000000005b4df4] bus_for_each_dev+0x54/0xa0
 [00000000005b5a54] bus_add_driver+0x154/0x260
 [00000000005b7190] driver_register+0x50/0x180
 [00000000006d250c] sunsu_init+0x18c/0x1e0
 [00000000006c2668] do_one_initcall+0xe8/0x160
 [00000000006c282c] kernel_init_freeable+0x12c/0x1e0
 [0000000000603764] kernel_init+0x4/0x100
 [0000000000405f64] ret_from_syscall+0x1c/0x2c
 [0000000000000000]           (null)

1)Fix the panic;
2)Increment registered port number every successful
probe.

Signed-off-by: Kirill Tkhai <tkhai@yandex.ru>
CC: David Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-01 13:31:36 -08:00
..
hvc Features: 2013-02-24 16:18:31 -08:00
ipwireless Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-02-21 17:40:58 -08:00
serial sunsu: Fix panic in case of nonexistent port at "console=ttySY" cmdline option 2013-03-01 13:31:36 -08:00
vt Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-02-26 20:16:07 -08:00
amiserial.c tty: Remove ancient hardpps() 2013-02-13 10:17:06 -08:00
bfin_jtag_comm.c TTY: switch tty_flip_buffer_push 2013-01-15 22:30:15 -08:00
cyclades.c cyclades: push down tty_port_tty_get 2013-01-15 22:43:15 -08:00
ehv_bytechan.c TTY: switch tty_flip_buffer_push 2013-01-15 22:30:15 -08:00
goldfish.c goldfish: move to tty_port for flip buffers 2013-01-25 08:09:38 -08:00
isicom.c TTY: switch tty_flip_buffer_push 2013-01-15 22:30:15 -08:00
Kconfig tty: metag_da: Add metag DA TTY driver 2013-02-06 11:10:17 -08:00
Makefile tty: metag_da: Add metag DA TTY driver 2013-02-06 11:10:17 -08:00
metag_da.c tty: metag_da: avoid getting tty kref in dashtty_timer() 2013-02-06 11:10:17 -08:00
moxa.c TTY: switch tty_schedule_flip 2013-01-15 22:43:15 -08:00
moxa.h
mxser.c tty: mxser: improve error handling in mxser_probe() and mxser_module_init() 2013-02-18 11:05:14 -08:00
mxser.h
n_gsm.c tty: Prevent deadlock in n_gsm driver 2013-01-30 12:10:09 +01:00
n_hdlc.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
n_r3964.c tty: localise the lock 2012-08-10 12:55:47 -07:00
n_tracerouter.c
n_tracesink.c
n_tracesink.h
n_tty.c pps: Move timestamp read into PPS code proper 2013-02-13 10:13:58 -08:00
nozomi.c TTY: nozomi, remove dead code 2013-01-15 22:43:16 -08:00
pty.c pty: Ignore slave open count for master pty open 2013-02-04 15:40:29 -08:00
rocket_int.h
rocket.c tty: rocket: Explicitly list supported PCI IDs 2013-01-17 17:28:39 -08:00
rocket.h
synclink_gt.c TTY: synclink: Convert + to | for bit operations 2013-01-30 00:09:58 -05:00
synclink.c TTY: synclink: Convert + to | for bit operations 2013-01-30 00:09:58 -05:00
synclinkmp.c TTY: synclink: Convert + to | for bit operations 2013-01-30 00:09:58 -05:00
sysrq.c sysrq: don't depend on weak undefined arrays to have an address that compares as NULL 2013-02-27 09:59:50 -08:00
tty_audit.c TTY: audit, stop accessing tty->icount 2012-10-22 16:50:54 -07:00
tty_buffer.c pps: Move timestamp read into PPS code proper 2013-02-13 10:13:58 -08:00
tty_io.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2013-02-21 17:54:03 -08:00
tty_ioctl.c tty: set_termios/set_termiox should not return -EINTR 2013-02-04 15:02:14 -08:00
tty_ldisc.c tty: don't deadlock while flushing workqueue 2013-01-15 23:07:15 -08:00
tty_mutex.c tty: tty_mutex.c: Fixed coding style warning (using printk) 2012-10-24 11:34:51 -07:00
tty_port.c TTY: introduce tty_port_destroy 2012-11-15 17:20:58 -08:00