Fengguang Wu e47c6a3408 clk: validate pointer in __clk_disable() ...

clk_get() returns -ENOENT on error and some careless caller might
dereference it without error checking:

In mxc_rnga_remove():

        struct clk *clk = clk_get(&pdev->dev, "rng");

	// ...

        clk_disable(clk);

Since it's insane to audit the lots of existing and future clk users,
let's add a check in the callee to avoid kernel panic and warn about
any buggy user.

Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Viresh Kumar <viresh.kumar@st.com>
Cc: viresh kumar <viresh.linux@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2012-07-30 17:25:13 -07:00

..

mxs

Merge branch 'clk/mxs-for-3.6' of git://git.linaro.org/people/shawnguo/linux-2.6 into clk-next

2012-07-12 09:48:19 -07:00

socfpga

ARM: socfpga: initial support for Altera's SOCFPGA platform

2012-07-19 10:39:00 +02:00

spear

Clk: SPEAr1340: Update sys clock parent array

2012-07-18 10:04:53 +05:30

versatile

ARM: integrator: convert to common clock

2012-07-11 17:58:45 -07:00

clk-divider.c

clk: Add CLK_IS_BASIC flag to identify basic clocks

2012-07-11 15:36:43 -07:00

clk-fixed-factor.c

clk: Add CLK_IS_BASIC flag to identify basic clocks

2012-07-11 15:36:43 -07:00

clk-fixed-rate.c

clk: add DT fixed-clock binding support

2012-07-11 17:58:46 -07:00

clk-gate.c

clk: Add CLK_IS_BASIC flag to identify basic clocks

2012-07-11 15:36:43 -07:00

clk-highbank.c

clk: add highbank clock support

2012-07-11 17:58:47 -07:00

clk-mux.c

clk: Add CLK_IS_BASIC flag to identify basic clocks

2012-07-11 15:36:43 -07:00

clk-nomadik.c

ARM: nomadik: convert to generic clock

2012-06-10 18:41:40 +02:00

clk-u300.c

ARM: u300: convert to common clock

2012-07-11 15:36:45 -07:00

clk-wm831x.c

clk: wm831x: Add initial WM831x clock driver

2012-07-11 15:36:44 -07:00

clk.c

clk: validate pointer in __clk_disable()

2012-07-30 17:25:13 -07:00

clkdev.c

clk: fix compile for OF && !COMMON_CLK

2012-07-19 14:07:56 -07:00

Kconfig

clk: remove redundant depends on from drivers/Kconfig

2012-07-30 17:25:12 -07:00

Makefile

The common clk framework changes for 3.6 include a small number of core

2012-07-24 16:40:57 -07:00