[PATCH RFC 086/111] staging: etnaviv: allow to draw up to 256 rectangles in one draw call

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The hardware interprets a value of 0 as the maximium number of rectangles
which is 256. Allow this in the command parser.

Signed-off-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
---
 drivers/staging/etnaviv/etnaviv_cmd_parser.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/staging/etnaviv/etnaviv_cmd_parser.c b/drivers/staging/etnaviv/etnaviv_cmd_parser.c
index 4cc6944e4a8f..61370d3ebf9d 100644
--- a/drivers/staging/etnaviv/etnaviv_cmd_parser.c
+++ b/drivers/staging/etnaviv/etnaviv_cmd_parser.c
@@ -68,6 +68,8 @@ bool etnaviv_cmd_validate_one(struct etnaviv_gpu *gpu,
 
 		case FE_OPCODE_DRAW_2D:
 			n = EXTRACT(cmd, VIV_FE_DRAW_2D_HEADER_COUNT);
+			if (n == 0)
+				n = 256;
 			len = 2 + n * 2;
 			break;
 
-- 
2.1.4

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