[PATCH 06/12] nouveau: fix function cast warning

From: Arnd Bergmann <arnd@kernel.org>
To: linux-kbuild@vger.kernel.org,
	Masahiro Yamada <masahiroy@kernel.org>,
	Karol Herbst <kherbst@redhat.com>, Lyude Paul <lyude@redhat.com>,
	Danilo Krummrich <dakr@redhat.com>,
	David Airlie <airlied@gmail.com>, Daniel Vetter <daniel@ffwll.ch>,
	Nathan Chancellor <nathan@kernel.org>,
	Ben Skeggs <bskeggs@redhat.com>
Cc: Nicolas Schier <nicolas@fjasle.eu>, Arnd Bergmann <arnd@arndb.de>,
	Nick Desaulniers <ndesaulniers@google.com>,
	Bill Wendling <morbo@google.com>,
	Justin Stitt <justinstitt@google.com>,
	dri-devel@lists.freedesktop.org, nouveau@lists.freedesktop.org,
	linux-kernel@vger.kernel.org, llvm@lists.linux.dev
Subject: [PATCH 06/12] nouveau: fix function cast warning
Date: Tue, 26 Mar 2024 15:51:31 +0100	[thread overview]
Message-ID: <20240326145140.3257163-5-arnd@kernel.org> (raw)
In-Reply-To: <20240326144741.3094687-1-arnd@kernel.org>

From: Arnd Bergmann <arnd@arndb.de>

Calling a function through an incompatible pointer type causes breaks
kcfi, so clang warns about the assignment:

drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadowof.c:73:10: error: cast from 'void (*)(const void *)' to 'void (*)(void *)' converts to incompatible function type [-Werror,-Wcast-function-type-strict]
   73 |         .fini = (void(*)(void *))kfree,

Avoid this with a trivial wrapper.

Fixes: c39f472e9f14 ("drm/nouveau: remove symlinks, move core/ to nvkm/ (no code changes)")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadowof.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadowof.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadowof.c
index 4bf486b57101..0dbcc23305f3 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadowof.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadowof.c
@@ -66,11 +66,16 @@ of_init(struct nvkm_bios *bios, const char *name)
 	return ERR_PTR(-EINVAL);
 }
 
+static void of_fini(void *p)
+{
+	return kfree(p);
+}
+
 const struct nvbios_source
 nvbios_of = {
 	.name = "OpenFirmware",
 	.init = of_init,
-	.fini = (void(*)(void *))kfree,
+	.fini = of_fini,
 	.read = of_read,
 	.size = of_size,
 	.rw = false,
-- 
2.39.2

