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clk: qcom: clk-rpmh: prevent integer overflow in recalc_rate

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commit 89aa5925d201b90a48416784831916ca203658f9 upstream.

aggr_state and unit fields are u32. The result of their
multiplication may not fit in this type.

Add explicit casting to prevent overflow.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: 04053f4d23 ("clk: qcom: clk-rpmh: Add IPA clock support")
Cc: stable@vger.kernel.org # 5.4+
Signed-off-by: Anastasia Belova <abelova@astralinux.ru>
Link: https://lore.kernel.org/r/20241203084231.6001-1-abelova@astralinux.ru
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Anastasia Belova 2024-12-03 11:42:31 +03:00 • committed by Greg Kroah-Hartman
commit 523003eb6c
1 changed files with 1 additions and 1 deletions
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2
drivers/clk/qcom/clk-rpmh.c
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@ -331,7 +331,7 @@ static unsigned long clk_rpmh_bcm_recalc_rate(struct clk_hw *hw,
{
struct clk_rpmh *c = to_clk_rpmh(hw);
return c->aggr_state * c->unit;
return (unsigned long)c->aggr_state * c->unit;
}
static const struct clk_ops clk_rpmh_bcm_ops = {