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@xxxxxxx>
---
drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c | 4 ++--
1 file 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 8fe8051c34e6..c958ca9bae63 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)
--
2.21.0
_______________________________________________
dri-devel mailing list
dri-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/dri-devel
