clk: ti: dra7-atl-clock: Fix possible ERR_PTR dereference

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commit e0cdcda508 upstream.

of_clk_get_from_provider() returns ERR_PTR on failure. The
dra7-atl-clock driver was not checking its return value and
immediately used it in __clk_get_hw().  __clk_get_hw()
dereferences supplied clock, if it is not NULL, so in that case
it would dereference an ERR_PTR.

Fixes: 9ac33b0ce8 ("CLK: TI: Driver for DRA7 ATL (Audio Tracking Logic)")
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Krzysztof Kozlowski 2015-05-13 15:54:40 +09:00 • committed by Greg Kroah-Hartman

parent c4087d1c98

commit 9baf2fc882

1 changed files with 5 additions and 0 deletions

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drivers/clk/ti/clk-dra7-atl.c

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