From: Joe Perches <joe@perches.com>
To: Andrew Morton <akpm@linux-foundation.org>,
Andy Whitcroft <apw@canonical.com>
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH 01/12] checkpatch: Add GENMASK tests
Date: Tue, 9 Jul 2019 22:04:14 -0700 [thread overview]
Message-ID: <c5cf9dd30360a395b50514f8fece2231e0180ce1.1562734889.git.joe@perches.com> (raw)
In-Reply-To: <cover.1562734889.git.joe@perches.com>
This macro is easy to misuse as it's odd argument order.
If specified with simple decimal values, make sure the arguments are
ordered high then low.
Also check if any argument is > 32 where instead of GENMASK,
GENMASK_ULL should be used.
Signed-off-by: Joe Perches <joe@perches.com>
---
scripts/checkpatch.pl | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 6cb99ec62000..d37bbe33524b 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -6368,6 +6368,21 @@ sub process {
"switch default: should use break\n" . $herectx);
}
+# check for misuses of GENMASK
+ if ($line =~ /\b(GENMASK(?:_ULL)?)\s*\(\s*(\d+)\s*,\s*(\d+)\s*\)/) {
+ my $type = $1;
+ my $high = $2;
+ my $low = $3;
+ if ($high < $low) {
+ ERROR("GENMASK",
+ "$type argument order is high then low\n" . $herecurr);
+ }
+ if ($type eq "GENMASK" && ($high >= 32 || $low >= 32)) {
+ ERROR("GENMASK",
+ "$type with arguments >= 32 should use GENMASK_ULL\n" . $herecurr);
+ }
+ }
+
# check for gcc specific __FUNCTION__
if ($line =~ /\b__FUNCTION__\b/) {
if (WARN("USE_FUNC",
--
2.15.0
next prev parent reply other threads:[~2019-07-10 5:04 UTC|newest]
Thread overview: 176+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20190710050444epcas1p250f7aa0f8798a7757df51d66f5970c2a@epcas1p2.samsung.com>
2019-07-10 5:04 ` [PATCH 00/12] treewide: Fix GENMASK misuses Joe Perches
2019-07-10 5:04 ` Joe Perches
2019-07-10 5:04 ` Joe Perches
2019-07-10 5:04 ` Joe Perches
2019-07-10 5:04 ` Joe Perches
2019-07-10 5:04 ` Joe Perches [this message]
2019-07-24 18:03 ` [PATCH 01/12] checkpatch: Add GENMASK tests Joe Perches
2019-07-10 5:04 ` [PATCH 02/12] clocksource/drivers/npcm: Fix misuse of GENMASK macro Joe Perches
2019-07-10 9:10 ` [tip:timers/urgent] " tip-bot for Joe Perches
2019-07-15 10:00 ` [PATCH 02/12] " Avi Fishman
2019-07-15 10:00 ` Avi Fishman
2019-07-10 5:04 ` [PATCH 03/12] drm: aspeed_gfx: " Joe Perches
2019-07-10 5:04 ` Joe Perches
2019-07-10 5:04 ` Joe Perches
2019-07-24 17:16 ` Joe Perches
2019-07-24 17:16 ` Joe Perches
2019-07-25 1:10 ` Andrew Jeffery
2019-07-25 1:10 ` Andrew Jeffery
2019-07-25 1:10 ` Andrew Jeffery
2019-07-25 1:18 ` Joe Perches
2019-07-25 1:18 ` Joe Perches
2019-07-25 1:18 ` Joe Perches
2019-07-25 2:52 ` Joel Stanley
2019-07-25 2:52 ` Joel Stanley
2019-07-25 14:37 ` Joe Perches
2019-07-25 14:37 ` Joe Perches
2019-07-25 14:37 ` Joe Perches
2019-07-10 5:04 ` [PATCH 04/12] iio: adc: max9611: " Joe Perches
2019-07-14 11:54 ` Jonathan Cameron
2019-07-14 12:19 ` Joe Perches
2019-07-14 14:37 ` Jacopo Mondi
2019-07-29 21:52 ` Jacopo Mondi
2019-07-31 8:37 ` Jonathan Cameron
2019-07-10 5:04 ` [PATCH 05/12] irqchip/gic-v3-its: " Joe Perches
2019-07-10 8:28 ` Marc Zyngier
2019-07-10 9:07 ` [tip:irq/urgent] " tip-bot for Joe Perches
2019-07-10 5:04 ` [PATCH 06/12] mmc: meson-mx-sdio: " Joe Perches
2019-07-10 5:04 ` Joe Perches
2019-07-10 5:04 ` Joe Perches
2019-07-22 7:23 ` Neil Armstrong
2019-07-22 7:23 ` Neil Armstrong
2019-07-22 7:23 ` Neil Armstrong
2019-07-22 13:43 ` Ulf Hansson
2019-07-22 13:43 ` Ulf Hansson
2019-07-22 13:43 ` Ulf Hansson
2019-07-10 5:04 ` [PATCH 07/12] net: ethernet: mediatek: Fix misuses " Joe Perches
2019-07-10 5:04 ` Joe Perches
2019-07-10 5:04 ` [PATCH 08/12] net: stmmac: " Joe Perches
2019-07-10 5:04 ` Joe Perches
2019-07-10 10:33 ` Jose Abreu
2019-07-10 10:33 ` Jose Abreu
2019-07-10 5:04 ` [PATCH 09/12] rtw88: Fix misuse " Joe Perches
2019-07-10 5:07 ` Tony Chuang
2019-07-24 11:48 ` Kalle Valo
2019-07-10 5:04 ` [PATCH 10/12] phy: amlogic: G12A: " Joe Perches
2019-07-10 5:04 ` Joe Perches
2019-07-10 5:04 ` Joe Perches
2019-07-22 7:23 ` Neil Armstrong
2019-07-22 7:23 ` Neil Armstrong
2019-07-22 7:23 ` Neil Armstrong
2019-08-23 2:41 ` Kishon Vijay Abraham I
2019-08-23 2:41 ` Kishon Vijay Abraham I
2019-08-23 2:41 ` Kishon Vijay Abraham I
2019-08-23 4:59 ` Joe Perches
2019-08-23 4:59 ` Joe Perches
2019-08-23 4:59 ` Joe Perches
2019-07-10 5:04 ` [PATCH 11/12] staging: media: cedrus: " Joe Perches
2019-07-10 5:04 ` Joe Perches
2019-07-10 5:04 ` Joe Perches
2019-07-10 7:23 ` Paul Kocialkowski
2019-07-10 7:23 ` Paul Kocialkowski
2019-07-10 7:23 ` Paul Kocialkowski
2019-07-24 17:09 ` Joe Perches
2019-07-24 17:09 ` Joe Perches
2019-07-24 18:35 ` Greg Kroah-Hartman
2019-07-24 18:35 ` Greg Kroah-Hartman
2019-07-24 18:39 ` Joe Perches
2019-07-24 18:39 ` Joe Perches
2019-07-24 18:55 ` Greg Kroah-Hartman
2019-07-24 18:55 ` Greg Kroah-Hartman
2019-07-25 6:46 ` Hans Verkuil
2019-07-25 6:46 ` Hans Verkuil
2019-07-10 5:04 ` Joe Perches
2019-07-10 5:04 ` [PATCH 12/12] ASoC: wcd9335: " Joe Perches
2019-07-22 12:22 ` Applied "ASoC: wcd9335: Fix misuse of GENMASK macro" to the asoc tree Mark Brown
2019-07-22 12:22 ` Mark Brown
2019-07-10 9:17 ` [PATCH 00/12] treewide: Fix GENMASK misuses Johannes Berg
2019-07-10 9:17 ` Johannes Berg
2019-07-10 9:17 ` Johannes Berg
2019-07-10 9:17 ` Johannes Berg
2019-07-10 9:17 ` Johannes Berg
2019-07-10 9:43 ` Russell King - ARM Linux admin
2019-07-10 9:43 ` Russell King - ARM Linux admin
2019-07-10 9:43 ` Russell King - ARM Linux admin
2019-07-10 9:43 ` Russell King - ARM Linux admin
2019-07-10 9:43 ` Russell King - ARM Linux admin
2019-07-10 15:45 ` Joe Perches
2019-07-10 15:45 ` Joe Perches
2019-07-10 15:45 ` Joe Perches
2019-07-10 15:45 ` Joe Perches
2019-07-10 15:45 ` Joe Perches
2019-07-10 16:01 ` Joe Perches
2019-07-10 16:01 ` Joe Perches
2019-07-10 16:01 ` Joe Perches
2019-07-10 16:01 ` Joe Perches
2019-07-10 16:01 ` Joe Perches
2019-07-10 16:01 ` Joe Perches
2019-07-27 19:54 ` Rikard Falkeborn
2019-07-28 23:45 ` Joe Perches
2019-07-31 19:03 ` [PATCH] linux/bits.h: Add compile time sanity check of GENMASK inputs Rikard Falkeborn
2019-07-31 19:27 ` Joe Perches
2019-08-01 23:03 ` Rikard Falkeborn
2019-08-02 1:40 ` Masahiro Yamada
2019-08-02 3:13 ` Joe Perches
2019-08-02 3:25 ` Masahiro Yamada
2019-08-02 18:18 ` Rikard Falkeborn
2019-08-03 3:03 ` Masahiro Yamada
2019-08-03 3:12 ` Masahiro Yamada
2019-08-03 18:36 ` Rikard Falkeborn
2019-08-04 6:45 ` Masahiro Yamada
2019-08-05 19:55 ` Rikard Falkeborn
2019-08-06 15:19 ` Masahiro Yamada
2019-08-06 19:27 ` Rikard Falkeborn
2019-08-06 21:15 ` Joe Perches
2019-08-07 20:53 ` Rikard Falkeborn
2019-08-01 2:50 ` Masahiro Yamada
2019-08-01 2:57 ` Joe Perches
2019-08-01 23:03 ` Rikard Falkeborn
2019-08-01 23:03 ` [PATCH v2 1/2] linux/bits.h: Clarify macro argument names Rikard Falkeborn
2019-08-01 23:03 ` [PATCH v2 2/2] linux/bits.h: Add compile time sanity check of GENMASK inputs Rikard Falkeborn
2019-08-01 23:14 ` Joe Perches
2019-08-07 14:27 ` Guenter Roeck
2019-08-07 14:55 ` Masahiro Yamada
2019-08-07 16:52 ` Guenter Roeck
2019-08-07 20:07 ` Rikard Falkeborn
2019-08-08 0:07 ` Joe Perches
2019-08-08 0:58 ` Guenter Roeck
2019-08-08 1:08 ` Joe Perches
2019-08-08 1:53 ` Guenter Roeck
2019-08-08 2:44 ` kbuild test robot
2019-08-08 2:44 ` kbuild test robot
2019-08-08 3:46 ` [PATCH v2 1/2] linux/bits.h: Clarify macro argument names Masahiro Yamada
2019-08-10 18:43 ` Rikard Falkeborn
2019-08-10 19:20 ` Joe Perches
2019-08-11 18:49 ` [PATCH v3 0/3] Add compile time sanity check of GENMASK inputs Rikard Falkeborn
2019-08-11 18:49 ` [PATCH v3 1/3] x86/boot: Use common BUILD_BUG_ON Rikard Falkeborn
2019-08-12 18:19 ` [tip:x86/boot] " tip-bot for Rikard Falkeborn
2019-08-16 12:19 ` tip-bot for Rikard Falkeborn
2019-08-11 18:49 ` [PATCH v3 2/3] linux/build_bug.h: Change type to int Rikard Falkeborn
2019-10-06 2:26 ` Masahiro Yamada
2019-08-11 18:49 ` [PATCH v3 3/3] linux/bits.h: Add compile time sanity check of GENMASK inputs Rikard Falkeborn
2019-10-06 2:30 ` Masahiro Yamada
2019-10-08 7:23 ` Geert Uytterhoeven
2019-10-08 7:44 ` Masahiro Yamada
2019-10-08 7:52 ` Masahiro Yamada
2019-10-08 19:06 ` Rikard Falkeborn
2019-08-12 17:58 ` [PATCH v3 0/3] " Kees Cook
2019-10-05 19:46 ` Rikard Falkeborn
2019-10-09 21:45 ` [Patch v4 0/2] " Rikard Falkeborn
2019-10-09 21:45 ` [Patch v4 1/2] linux/build_bug.h: Change type to int Rikard Falkeborn
2019-10-09 21:45 ` [Patch v4 2/2] linux/bits.h: Add compile time sanity check of GENMASK inputs Rikard Falkeborn
2019-10-10 2:24 ` Masahiro Yamada
2019-10-12 2:27 ` Andrew Morton
2019-10-22 19:53 ` Rikard Falkeborn
2019-11-01 21:28 ` Rikard Falkeborn
2020-03-08 19:39 ` [PATCH v5] " Rikard Falkeborn
2020-03-09 16:40 ` Kees Cook
2019-07-11 21:30 ` [PATCH 00/12] treewide: Fix GENMASK misuses David Miller
2019-07-11 21:30 ` David Miller
2019-07-11 21:30 ` David Miller
2019-07-11 21:30 ` David Miller
2019-07-12 12:54 ` Andrzej Hajda
2019-07-12 12:54 ` Andrzej Hajda
2019-07-12 12:54 ` Andrzej Hajda
2019-07-12 12:54 ` Andrzej Hajda
2019-07-12 12:54 ` Andrzej Hajda
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