From: Sam Winchenbach <sam.winchenbach@framepointer.org>
To: linux-kernel@vger.kernel.org
Cc: lars@metafoo.de, Michael.Hennerich@analog.com,
antoniu.miclaus@analog.com, jic23@kernel.org, robh@kernel.org,
krzk+dt@kernel.org, conor+dt@kernel.org,
linux-iio@vger.kernel.org, devicetree@vger.kernel.org,
sam.winchenbach@framepointer.org, bpellegrino@arka.org,
Sam Winchenbach <swinchenbach@arka.org>
Subject: [PATCH v8 3/6] iio: filter: admv8818: fix integer overflow
Date: Fri, 28 Mar 2025 13:48:28 -0400 [thread overview]
Message-ID: <20250328174831.227202-4-sam.winchenbach@framepointer.org> (raw)
In-Reply-To: <20250328174831.227202-1-sam.winchenbach@framepointer.org>
From: Sam Winchenbach <swinchenbach@arka.org>
HZ_PER_MHZ is only unsigned long. This math overflows, leading to
incorrect results.
Fixes: f34fe888ad05 ("iio:filter:admv8818: add support for ADMV8818")
Signed-off-by: Sam Winchenbach <swinchenbach@arka.org>
---
drivers/iio/filter/admv8818.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iio/filter/admv8818.c b/drivers/iio/filter/admv8818.c
index 3d8740caa1455..cd3aff9a2f7bf 100644
--- a/drivers/iio/filter/admv8818.c
+++ b/drivers/iio/filter/admv8818.c
@@ -154,7 +154,7 @@ static int __admv8818_hpf_select(struct admv8818_state *st, u64 freq)
}
/* Close HPF frequency gap between 12 and 12.5 GHz */
- if (freq >= 12000 * HZ_PER_MHZ && freq <= 12500 * HZ_PER_MHZ) {
+ if (freq >= 12000ULL * HZ_PER_MHZ && freq < 12500ULL * HZ_PER_MHZ) {
hpf_band = 3;
hpf_step = 15;
}
--
2.49.0
next prev parent reply other threads:[~2025-03-28 17:55 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-28 17:48 [PATCH v8 0/6] Update auto corner freq calculation Sam Winchenbach
2025-03-28 17:48 ` [PATCH v8 1/6] dt-bindings: iio: filter: Add lpf/hpf freq margins Sam Winchenbach
2025-03-28 17:48 ` [PATCH v8 2/6] iio: filter: admv8818: fix band 4, state 15 Sam Winchenbach
2025-03-28 17:48 ` Sam Winchenbach [this message]
2025-03-28 17:48 ` [PATCH v8 4/6] iio: filter: admv8818: fix range calculation Sam Winchenbach
2025-03-28 17:48 ` [PATCH v8 5/6] iio: core: Add support for writing 64 bit attrs Sam Winchenbach
2025-03-30 15:17 ` Jonathan Cameron
2025-03-30 15:20 ` Jonathan Cameron
2025-03-28 17:48 ` [PATCH v8 6/6] iio: filter: admv8818: Support frequencies >= 2^32 Sam Winchenbach
2025-03-30 15:23 ` [PATCH v8 0/6] Update auto corner freq calculation Jonathan Cameron
2025-03-31 19:30 ` Sam Winchenbach
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