[PATCH 1/4] mtk_mdp_vpu: fix build with COMPILE_TEST for 32 bits

[minghsiu.tsai@mediatek.com (Minghsiu Tsai)]

Hi Mauro,

This issue has been fixed by the patch below and merged in media tree,
and also signed by you.

Is it duplicate?

commit 37bf7e34ecc817ce6b8278588aeb22aab5635e1c
Author: Minghsiu Tsai <minghsiu.tsai@mediatek.com>
Date:   Mon Sep 19 03:34:42 2016 -0300

    [media] media: mtk-mdp: fix build warning in arch x86

    This patch fix build warning in arch x86

    Signed-off-by: Minghsiu Tsai <minghsiu.tsai@mediatek.com>
    Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
    Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>



On Fri, 2016-10-21 at 11:59 -0200, Mauro Carvalho Chehab wrote:
> When building on i386 in 32 bits, several new warnings appear:
> 
> drivers/media/platform/mtk-mdp/mtk_mdp_vpu.c: In function 'mtk_mdp_vpu_handle_init_ack':
> drivers/media/platform/mtk-mdp/mtk_mdp_vpu.c:28:28: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
>   struct mtk_mdp_vpu *vpu = (struct mtk_mdp_vpu *)msg->ap_inst;
>                             ^
> drivers/media/platform/mtk-mdp/mtk_mdp_vpu.c: In function 'mtk_mdp_vpu_ipi_handler':
> drivers/media/platform/mtk-mdp/mtk_mdp_vpu.c:40:28: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
>   struct mtk_mdp_vpu *vpu = (struct mtk_mdp_vpu *)msg->ap_inst;
>                             ^
> drivers/media/platform/mtk-mdp/mtk_mdp_vpu.c: In function 'mtk_mdp_vpu_send_ap_ipi':
> drivers/media/platform/mtk-mdp/mtk_mdp_vpu.c:111:16: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
>   msg.ap_inst = (uint64_t)vpu;
>                 ^
> drivers/media/platform/mtk-mdp/mtk_mdp_vpu.c: In function 'mtk_mdp_vpu_init':
> drivers/media/platform/mtk-mdp/mtk_mdp_vpu.c:129:16: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
>   msg.ap_inst = (uint64_t)vpu;
>                 ^
> 
> That's because the driver assumes that it will be built only on
> 64 bits. As we don't want extra warnings when building with 32
> bits, we need to double-cast.
> 
> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
> ---
>  drivers/media/platform/mtk-mdp/mtk_mdp_vpu.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/media/platform/mtk-mdp/mtk_mdp_vpu.c b/drivers/media/platform/mtk-mdp/mtk_mdp_vpu.c
> index fb07bf3dbd8b..b38d29e99f7a 100644
> --- a/drivers/media/platform/mtk-mdp/mtk_mdp_vpu.c
> +++ b/drivers/media/platform/mtk-mdp/mtk_mdp_vpu.c
> @@ -25,7 +25,7 @@ static inline struct mtk_mdp_ctx *vpu_to_ctx(struct mtk_mdp_vpu *vpu)
>  
>  static void mtk_mdp_vpu_handle_init_ack(struct mdp_ipi_comm_ack *msg)
>  {
> -	struct mtk_mdp_vpu *vpu = (struct mtk_mdp_vpu *)msg->ap_inst;
> +	struct mtk_mdp_vpu *vpu = (struct mtk_mdp_vpu *)(long)msg->ap_inst;
>  
>  	/* mapping VPU address to kernel virtual address */
>  	vpu->vsi = (struct mdp_process_vsi *)
> @@ -37,7 +37,7 @@ static void mtk_mdp_vpu_ipi_handler(void *data, unsigned int len, void *priv)
>  {
>  	unsigned int msg_id = *(unsigned int *)data;
>  	struct mdp_ipi_comm_ack *msg = (struct mdp_ipi_comm_ack *)data;
> -	struct mtk_mdp_vpu *vpu = (struct mtk_mdp_vpu *)msg->ap_inst;
> +	struct mtk_mdp_vpu *vpu = (struct mtk_mdp_vpu *)(long)msg->ap_inst;
>  	struct mtk_mdp_ctx *ctx;
>  
>  	vpu->failure = msg->status;
> @@ -108,7 +108,7 @@ static int mtk_mdp_vpu_send_ap_ipi(struct mtk_mdp_vpu *vpu, uint32_t msg_id)
>  	msg.msg_id = msg_id;
>  	msg.ipi_id = IPI_MDP;
>  	msg.vpu_inst_addr = vpu->inst_addr;
> -	msg.ap_inst = (uint64_t)vpu;
> +	msg.ap_inst = (uint64_t)(long)vpu;
>  	err = mtk_mdp_vpu_send_msg((void *)&msg, sizeof(msg), vpu, IPI_MDP);
>  	if (!err && vpu->failure)
>  		err = -EINVAL;
> @@ -126,7 +126,7 @@ int mtk_mdp_vpu_init(struct mtk_mdp_vpu *vpu)
>  
>  	msg.msg_id = AP_MDP_INIT;
>  	msg.ipi_id = IPI_MDP;
> -	msg.ap_inst = (uint64_t)vpu;
> +	msg.ap_inst = (uint64_t)(long)vpu;
>  	err = mtk_mdp_vpu_send_msg((void *)&msg, sizeof(msg), vpu, IPI_MDP);
>  	if (!err && vpu->failure)
>  		err = -EINVAL;