media: platform: mtk-mdp3: Constify buffer passed to mdp_vpu_sendmsg()

mdp_vpu_sendmsg() passes the buffer to scp_ipi_send(), which takes now
pointer to const, so adjust this interface as well for increased code
safety and code readability.

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260317-rpmsg-send-const-v3-5-4d7fd27f037f@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-vpu.c b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-vpu.c
index fae3e1ad2df758a50bd175479dbaf7a9eb859222..67f3001153ae402859ca12c50ad3a0a31acfc6db 100644 (file)
--- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-vpu.c
+++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-vpu.c
@@ -163,7 +163,7 @@ void mdp_vpu_unregister(struct mdp_dev *mdp)
 }
 
 static int mdp_vpu_sendmsg(struct mdp_vpu_dev *vpu, enum scp_ipi_id id,
-                          void *buf, unsigned int len)
+                          const void *buf, unsigned int len)
 {
        struct mdp_dev *mdp = vpu_to_mdp(vpu);
        unsigned int t = MDP_VPU_MESSAGE_TIMEOUT;