diff options
| author | Icenowy Zheng <icenowy@aosc.io> | 2019-10-07 00:03:02 +0800 |
|---|---|---|
| committer | Maxime Ripard <mripard@kernel.org> | 2019-10-07 14:01:25 +0200 |
| commit | 4340ec45e895c4bd25e9bcdb3b88cd192fd9512c (patch) | |
| tree | 93aa02622c24f47bcea4756c7df38c6d3212b91d /drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c | |
| parent | 81fafb9488a1d1347b39ad456d85e29649383749 (diff) | |
drm/sun4i: sun6i_mipi_dsi: fix DCS long write packet length
The packet length of DCS long write packet should not be added with 1
when constructing long write packet.
Fix this.
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191006160303.24413-4-icenowy@aosc.io
Diffstat (limited to 'drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c')
| -rw-r--r-- | drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c index 5acdddfbcb25..000c4a5de059 100644 --- a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c +++ b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c @@ -832,8 +832,8 @@ static u32 sun6i_dsi_dcs_build_pkt_hdr(struct sun6i_dsi *dsi, u32 pkt = msg->type; if (msg->type == MIPI_DSI_DCS_LONG_WRITE) { - pkt |= ((msg->tx_len + 1) & 0xffff) << 8; - pkt |= (((msg->tx_len + 1) >> 8) & 0xffff) << 16; + pkt |= ((msg->tx_len) & 0xffff) << 8; + pkt |= (((msg->tx_len) >> 8) & 0xffff) << 16; } else { pkt |= (((u8 *)msg->tx_buf)[0] << 8); if (msg->tx_len > 1) |