From 95c58291ee709424557996891926a05a32c5b13a Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@arndb.de>
Date: Mon, 27 Sep 2021 13:36:23 +0200
Subject: [PATCH] drm/msm/submit: fix overflow check on 64-bit architectures
Git-commit: 95c58291ee709424557996891926a05a32c5b13a
Patch-mainline: v5.15-rc6
References: git-fixes stable-5.14.14

The overflow check does causes a warning from clang-14 when 'sz' is a type
that is smaller than size_t:

drivers/gpu/drm/msm/msm_gem_submit.c:217:10: error: result of comparison of constant 18446744073709551615 with expression of type 'unsigned int' is always false [-Werror,-Wtautological-constant-out-of-range-compare]
                if (sz == SIZE_MAX) {

Change the type accordingly.

Fixes: 20224d715a88 ("drm/msm/submit: Move copy_from_user ahead of locking bos")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20210927113632.3849987-1-arnd@kernel.org
Signed-off-by: Rob Clark <robdclark@chromium.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/gpu/drm/msm/msm_gem_submit.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c b/drivers/gpu/drm/msm/msm_gem_submit.c
index 7e0f6571cbca..151d19e4453c 100644
--- a/drivers/gpu/drm/msm/msm_gem_submit.c
+++ b/drivers/gpu/drm/msm/msm_gem_submit.c
@@ -171,7 +171,8 @@ static int submit_lookup_objects(struct msm_gem_submit *submit,
 static int submit_lookup_cmds(struct msm_gem_submit *submit,
 		struct drm_msm_gem_submit *args, struct drm_file *file)
 {
-	unsigned i, sz;
+	unsigned i;
+	size_t sz;
 	int ret = 0;
 
 	for (i = 0; i < args->nr_cmds; i++) {
-- 
2.26.2