tree: git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers.git master
head: d7ba9d1e0b037c24ee7f278fdcf9c44f80f3dbe7
commit: 2c42cdbaec56a9565a2717b450506150c9c55103 [4533/5645] [media] V4L2: platform: Add Renesas R-Car JPEG codec driver
reproduce:
# apt-get install sparse
git checkout 2c42cdbaec56a9565a2717b450506150c9c55103
make ARCH=x86_64 allmodconfig
make C=1 CF=-D__CHECK_ENDIAN__
sparse warnings: (new ones prefixed by >>)
>> drivers/media/platform/rcar_jpu.c:1147:51: sparse: incorrect type in assignment (different base types)
drivers/media/platform/rcar_jpu.c:1147:51: expected unsigned short [unsigned] [short] [usertype] <noident>
drivers/media/platform/rcar_jpu.c:1147:51: got restricted __be16 [usertype] <noident>
drivers/media/platform/rcar_jpu.c:1149:50: sparse: incorrect type in assignment (different base types)
drivers/media/platform/rcar_jpu.c:1149:50: expected unsigned short [unsigned] [short] [usertype] <noident>
drivers/media/platform/rcar_jpu.c:1149:50: got restricted __be16 [usertype] <noident>
vim +1147 drivers/media/platform/rcar_jpu.c
1131 struct jpu_buffer *jpu_buf = vb2_to_jpu_buffer(vb);
1132 struct jpu_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1133 struct jpu_q_data *q_data = &ctx->out_q;
1134 enum v4l2_buf_type type = vb->vb2_queue->type;
1135 u8 *buffer;
1136
1137 if (vb->state == VB2_BUF_STATE_DONE)
1138 vb->v4l2_buf.sequence = jpu_get_q_data(ctx, type)->sequence++;
1139
1140 if (!ctx->encoder || vb->state != VB2_BUF_STATE_DONE ||
1141 V4L2_TYPE_IS_OUTPUT(type))
1142 return;
1143
1144 buffer = vb2_plane_vaddr(vb, 0);
1145
1146 memcpy(buffer, jpeg_hdrs[jpu_buf->compr_quality], JPU_JPEG_HDR_SIZE);
> 1147 *(u16 *)(buffer + JPU_JPEG_HEIGHT_OFFSET) =
1148 cpu_to_be16(q_data->format.height);
1149 *(u16 *)(buffer + JPU_JPEG_WIDTH_OFFSET) =
1150 cpu_to_be16(q_data->format.width);
1151 *(buffer + JPU_JPEG_SUBS_OFFSET) = q_data->fmtinfo->subsampling;
1152 }
1153
1154 static int jpu_start_streaming(struct vb2_queue *vq, unsigned count)
1155 {
---
0-DAY kernel test infrastructure Open Source Technology Center
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