e47c6a3408
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>
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|---|---|---|
| .. | ||
| mxs | ||
| socfpga | ||
| spear | ||
| versatile | ||
| Kconfig | ||
| Makefile | ||
| clk-divider.c | ||
| clk-fixed-factor.c | ||
| clk-fixed-rate.c | ||
| clk-gate.c | ||
| clk-highbank.c | ||
| clk-mux.c | ||
| clk-nomadik.c | ||
| clk-u300.c | ||
| clk-wm831x.c | ||
| clk.c | ||
| clkdev.c | ||