[PATCH v3 09/19 5.15.y] minmax: don't use max() in situations that want a C constant expression
From: Eliav Farber <hidden>
Date: 2025-10-08 15:32:28
Also in:
amd-gfx, dri-devel, linux-arm-msm, linux-btrfs, linux-edac, linux-ext4, linux-hwmon, linux-input, linux-kselftest, linux-media, linux-mm, linux-scsi, linux-staging, linux-sunxi, linux-um, lkml, netfilter-devel, platform-driver-x86, stable
Subsystem:
btrfs file system, cyttsp touchscreen driver, device-mapper (lvm), filesystems (vfs and infrastructure), input (keyboard, mouse, joystick, touchscreen) drivers, irqchip drivers, library code, the rest, vsprintf · Maintainers:
Chris Mason, David Sterba, Linus Walleij, Alasdair Kergon, Mike Snitzer, Mikulas Patocka, Benjamin Marzinski, Alexander Viro, Christian Brauner, Dmitry Torokhov, Thomas Gleixner, Andrew Morton, Linus Torvalds, Petr Mladek, Steven Rostedt
From: Linus Torvalds <torvalds@linux-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 <redacted> Cc: Lorenzo Stoakes <redacted> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Eliav Farber <redacted> --- 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 +- 5 files changed, 5 insertions(+), 5 deletions(-)
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 4cd3e533740b..74b1bd331425 100644
--- a/drivers/irqchip/irq-sun6i-r.c
+++ b/drivers/irqchip/irq-sun6i-r.c@@ -268,7 +268,7 @@ 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 8e2b00536c3e..9e2bbfe328f0 100644
--- a/drivers/md/dm-integrity.c
+++ b/drivers/md/dm-integrity.c@@ -1705,7 +1705,7 @@ 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 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 sectors_to_process;
diff --git a/fs/btrfs/tree-checker.c b/fs/btrfs/tree-checker.c
index 51e04efe3e20..8f96ddaceb9a 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 d86abdc77c26..e46eb93c115d 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c@@ -1100,7 +1100,7 @@ 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