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Message-ID: <20251002180036.33738-3-farbere@amazon.com>
Date: Thu, 2 Oct 2025 18:00:20 +0000
From: Eliav Farber <farbere@...zon.com>
To: <gregkh@...uxfoundation.org>, <kenneth.feng@....com>,
<alexander.deucher@....com>, <christian.koenig@....com>, <airlied@...il.com>,
<simona@...ll.ch>, <linus.walleij@...aro.org>, <dmitry.torokhov@...il.com>,
<tglx@...utronix.de>, <wens@...e.org>, <jernej.skrabec@...il.com>,
<samuel@...lland.org>, <agk@...hat.com>, <snitzer@...nel.org>,
<mpatocka@...hat.com>, <clm@...com>, <dsterba@...e.com>,
<luc.vanoostenryck@...il.com>, <pmladek@...e.com>, <rostedt@...dmis.org>,
<andriy.shevchenko@...ux.intel.com>, <linux@...musvillemoes.dk>,
<senozhatsky@...omium.org>, <akpm@...ux-foundation.org>,
<lijo.lazar@....com>, <asad.kamal@....com>, <kevinyang.wang@....com>,
<David.Laight@...LAB.COM>, <amd-gfx@...ts.freedesktop.org>,
<dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>,
<linux-input@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
<linux-sunxi@...ts.linux.dev>, <dm-devel@...ts.linux.dev>,
<linux-btrfs@...r.kernel.org>, <linux-sparse@...r.kernel.org>,
<stable@...r.kernel.org>, <farbere@...zon.com>
CC: Linus Torvalds <torvalds@...ux-foundation.org>, David Laight
<David.Laight@...lab.com>, Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
Subject: [PATCH v3 02/11 6.1.y] minmax: don't use max() in situations that want a C constant expression
From: Linus Torvalds <torvalds@...ux-foundation.org>
[ Upstream commit cb04e8b1d2f24c4c2c92f7b7529031fc35a16fed ]
We only had a couple of array[] declarations, and changing them to just
use 'MAX()' instead of 'max()' fixes the issue.
This will allow us to simplify our min/max macros enormously, since they
can now unconditionally use temporary variables to avoid using the
argument values multiple times.
Cc: David Laight <David.Laight@...lab.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
Signed-off-by: Eliav Farber <farbere@...zon.com>
---
V2 -> V3:
- Fix build failure in drivers/md/dm-integrity.c: In function
‘integrity_metadata’.
The fix uses MAX() instead of max() in the checksums_onstack[] array
declarations.
Note: In the mainline branch, checksums_onstack[] used max_t(), so it
was fixed to use MAX_T() in commit 4477b39c32fd ("minmax: add a few
more MIN_T/MAX_T users").
In 6.1.y, checksums_onstack[] used max(), so it was fixed to use MAX
in the backport of commit cb04e8b1d2f2 ("minmax: don't use max() in
situations that want a C constant expression").
drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c | 2 +-
drivers/input/touchscreen/cyttsp4_core.c | 2 +-
drivers/irqchip/irq-sun6i-r.c | 2 +-
drivers/md/dm-integrity.c | 2 +-
fs/btrfs/tree-checker.c | 2 +-
lib/vsprintf.c | 2 +-
6 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c b/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c
index 768b6e7dbd77..fd1faa840ec0 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c
@@ -700,7 +700,7 @@ static const char *smu_get_feature_name(struct smu_context *smu,
size_t smu_cmn_get_pp_feature_mask(struct smu_context *smu,
char *buf)
{
- int8_t sort_feature[max(SMU_FEATURE_COUNT, SMU_FEATURE_MAX)];
+ int8_t sort_feature[MAX(SMU_FEATURE_COUNT, SMU_FEATURE_MAX)];
uint64_t feature_mask;
int i, feature_index;
uint32_t count = 0;
diff --git a/drivers/input/touchscreen/cyttsp4_core.c b/drivers/input/touchscreen/cyttsp4_core.c
index dccbcb942fe5..936d69da3bda 100644
--- a/drivers/input/touchscreen/cyttsp4_core.c
+++ b/drivers/input/touchscreen/cyttsp4_core.c
@@ -871,7 +871,7 @@ static void cyttsp4_get_mt_touches(struct cyttsp4_mt_data *md, int num_cur_tch)
struct cyttsp4_touch tch;
int sig;
int i, j, t = 0;
- int ids[max(CY_TMA1036_MAX_TCH, CY_TMA4XX_MAX_TCH)];
+ int ids[MAX(CY_TMA1036_MAX_TCH, CY_TMA4XX_MAX_TCH)];
memset(ids, 0, si->si_ofs.tch_abs[CY_TCH_T].max * sizeof(int));
for (i = 0; i < num_cur_tch; i++) {
diff --git a/drivers/irqchip/irq-sun6i-r.c b/drivers/irqchip/irq-sun6i-r.c
index a01e44049415..99958d470d62 100644
--- a/drivers/irqchip/irq-sun6i-r.c
+++ b/drivers/irqchip/irq-sun6i-r.c
@@ -270,7 +270,7 @@ static const struct irq_domain_ops sun6i_r_intc_domain_ops = {
static int sun6i_r_intc_suspend(void)
{
- u32 buf[BITS_TO_U32(max(SUN6I_NR_TOP_LEVEL_IRQS, SUN6I_NR_MUX_BITS))];
+ u32 buf[BITS_TO_U32(MAX(SUN6I_NR_TOP_LEVEL_IRQS, SUN6I_NR_MUX_BITS))];
int i;
/* Wake IRQs are enabled during system sleep and shutdown. */
diff --git a/drivers/md/dm-integrity.c b/drivers/md/dm-integrity.c
index a201019babe4..fc9cb626ca91 100644
--- a/drivers/md/dm-integrity.c
+++ b/drivers/md/dm-integrity.c
@@ -1794,7 +1794,7 @@ static void integrity_metadata(struct work_struct *w)
struct bio *bio = dm_bio_from_per_bio_data(dio, sizeof(struct dm_integrity_io));
char *checksums;
unsigned int extra_space = unlikely(digest_size > ic->tag_size) ? digest_size - ic->tag_size : 0;
- char checksums_onstack[max((size_t)HASH_MAX_DIGESTSIZE, MAX_TAG_SIZE)];
+ char checksums_onstack[MAX(HASH_MAX_DIGESTSIZE, MAX_TAG_SIZE)];
sector_t sector;
unsigned int sectors_to_process;
diff --git a/fs/btrfs/tree-checker.c b/fs/btrfs/tree-checker.c
index d3e5429ee03d..6108cfab1ba5 100644
--- a/fs/btrfs/tree-checker.c
+++ b/fs/btrfs/tree-checker.c
@@ -608,7 +608,7 @@ static int check_dir_item(struct extent_buffer *leaf,
*/
if (key->type == BTRFS_DIR_ITEM_KEY ||
key->type == BTRFS_XATTR_ITEM_KEY) {
- char namebuf[max(BTRFS_NAME_LEN, XATTR_NAME_MAX)];
+ char namebuf[MAX(BTRFS_NAME_LEN, XATTR_NAME_MAX)];
read_extent_buffer(leaf, namebuf,
(unsigned long)(di + 1), name_len);
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index fa1c19701855..2b0b5f08b8fc 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -1082,7 +1082,7 @@ char *resource_string(char *buf, char *end, struct resource *res,
#define FLAG_BUF_SIZE (2 * sizeof(res->flags))
#define DECODED_BUF_SIZE sizeof("[mem - 64bit pref window disabled]")
#define RAW_BUF_SIZE sizeof("[mem - flags 0x]")
- char sym[max(2*RSRC_BUF_SIZE + DECODED_BUF_SIZE,
+ char sym[MAX(2*RSRC_BUF_SIZE + DECODED_BUF_SIZE,
2*RSRC_BUF_SIZE + FLAG_BUF_SIZE + RAW_BUF_SIZE)];
char *p = sym, *pend = sym + sizeof(sym);
--
2.47.3
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