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authorFengguang Wu <fengguang.wu@intel.com>2012-07-30 14:39:54 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-07-30 17:25:13 -0700
commite47c6a3408ea6bcfc5204f23d5a5b209de6e68b9 (patch)
tree0f515a18546fb2875a46d5cead87cb90e1401e38 /arch/avr32/boot
parent7041717e7c6ca33310d0c7333d9f7cebc65b2534 (diff)
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>
Diffstat (limited to 'arch/avr32/boot')
0 files changed, 0 insertions, 0 deletions