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ARM: OMAP2+: Fix error handling for omap2_clk_enable_init_clocks

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We need to check if we got the clock before trying to do anything
with it. Otherwise we will get something like this:

Unable to handle kernel paging request at virtual address fffffffe
...
[<c04bef78>] (clk_prepare) from [<c00338a4>] (omap2_clk_enable_init_clocks+0x50/0x8)
[<c00338a4>] (omap2_clk_enable_init_clocks) from [<c0876838>] (dm816x_dt_clk_init+0)
...

Let's add check for the clock and WARN if the init clock was not
found.

Cc: Brian Hutchinson <b.hutchman@gmail.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Tero Kristo <t-kristo@ti.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Tony Lindgren 2015-01-14 17:37:15 -08:00
parent 97bf6af1f9
commit 339d095ab2
1 changed files with 3 additions and 0 deletions
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3
arch/arm/mach-omap2/clock.c
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@ -620,6 +620,9 @@ void omap2_clk_enable_init_clocks(const char **clk_names, u8 num_clocks)
for (i = 0; i < num_clocks; i++) {
init_clk = clk_get(NULL, clk_names[i]);
if (WARN(IS_ERR(init_clk), "could not find init clock %s\n",
clk_names[i]))
continue;
clk_prepare_enable(init_clk);
}
}