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dbd2df859a
linux/drivers/tty
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Ezequiel Garcia dbd2df859a serial: 8250_dw: Add valid clk pointer check 
Commit ffc3ae6dd "serial: 8250_dw: Enable runtime PM" introduced runtime
PM management, which enables/disables the clk without checking if the clk
is valid. However, this driver allows to be probed without a defined clk,
using clock-frequency, as a fallback.

Therefore, on platforms that are device tree probed using clock-frequency
instead of clk, we get an ugly NULL pointer dereference.

This patch fixes it by simply adding a check before accessing the clk api.

Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-20 11:54:55 -07:00
..
hvc TTY: add tty_port_tty_wakeup helper 2013-03-18 16:19:45 -07:00
ipwireless tty: ipwireless: Remove redundant NULL check before kfree 2013-03-15 13:58:32 -07:00
serial serial: 8250_dw: Add valid clk pointer check 2013-05-20 11:54:55 -07:00
vt Merge 3.9-rc5 into tty-next 2013-04-01 12:01:10 -07:00
amiserial.c TTY: amiserial, use module_platform_driver_probe() 2013-03-15 13:55:23 -07:00
bfin_jtag_comm.c TTY: switch tty_flip_buffer_push 2013-01-15 22:30:15 -08:00
cyclades.c TTY: add tty_port_tty_hangup helper 2013-03-18 16:24:29 -07:00
ehv_bytechan.c TTY: add tty_port_tty_wakeup helper 2013-03-18 16:19:45 -07:00
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: add tty_port_tty_hangup helper 2013-03-18 16:24:29 -07:00
moxa.h
mxser.c Merge 3.9-rc7 intp tty-next 2013-04-14 19:13:28 -07:00
mxser.h
n_gsm.c TTY: fix DTR not being dropped on hang up 2013-03-18 16:27:53 -07:00
n_hdlc.c
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 n_tty: Fully initialize ldisc before restarting buffer work 2013-03-18 16:44:01 -07:00
nozomi.c TTY: add tty_port_tty_hangup helper 2013-03-18 16:24:29 -07:00
pty.c tty: fix up atime/mtime mess, take three 2013-05-01 07:32:21 -07:00
rocket_int.h
rocket.c TTY: rocket, fix compilation warning 2013-04-15 11:00:59 -07:00
rocket.h
synclink_gt.c TTY: synclink_gt: fix DTR being raised on hang up 2013-04-12 14:08:17 -07:00
synclink.c TTY: synclink: fix DTR being raised on hang up 2013-04-12 14:08:17 -07:00
synclinkmp.c TTY: synclinkmp: fix DTR being raised on hang up 2013-04-12 14:08:18 -07:00
sysrq.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2013-05-01 13:20:04 -07:00
tty_audit.c audit: do not needlessly take a lock in tty_audit_exit 2013-04-30 15:31:28 -04:00
tty_buffer.c tty: Fix race condition if flushing tty flip buffers 2013-04-09 17:05:02 -07:00
tty_io.c tty: fix up atime/mtime mess, take three 2013-05-01 07:32:21 -07:00
tty_ioctl.c tty: Fix unsafe bit ops in tty_throttle_safe/unthrottle_safe 2013-04-15 11:08:12 -07:00
tty_ldisc.c tty: Remove redundant tty_wait_until_sent() 2013-03-18 16:48:42 -07:00
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: Complete ownership transfer of flip buffers 2013-03-18 16:44:02 -07:00