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

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BugLink: https://bugs.launchpad.net/bugs/2114239

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>
Signed-off-by: Noah Wager <noah.wager@canonical.com>
Signed-off-by: Mehmet Basaran <mehmet.basaran@canonical.com>
This commit is contained in:
Anastasia Belova
2024-12-03 11:42:31 +03:00
committed by Mehmet Basaran
parent 654e2c57b2
commit ef862aef09
1 changed files with 1 additions and 1 deletions
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drivers/clk/qcom/clk-rpmh.c
+1 -1
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@@ -329,7 +329,7 @@ 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 = {