From 173bcc6018a79114afba3cab2fec55c984657b84 Mon Sep 17 00:00:00 2001 From: Zhenyu Wang Date: Thu, 27 Oct 2016 17:30:13 +0800 Subject: [PATCH] drm/i915/gvt: Fix shift for cmd data size This is to fix smatch warning on drivers/gpu/drm/i915/gvt/cmd_parser.c:1421 cmd_handler_mi_op_2f() warn: shift has higher precedence than mask We need bits 20-19 mask for data size. Cc: Dan Carpenter Signed-off-by: Zhenyu Wang --- drivers/gpu/drm/i915/gvt/cmd_parser.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/gvt/cmd_parser.c b/drivers/gpu/drm/i915/gvt/cmd_parser.c index 0084ece..1238b75 100644 --- a/drivers/gpu/drm/i915/gvt/cmd_parser.c +++ b/drivers/gpu/drm/i915/gvt/cmd_parser.c @@ -1418,8 +1418,8 @@ static int cmd_handler_mi_op_2e(struct parser_exec_state *s) static int cmd_handler_mi_op_2f(struct parser_exec_state *s) { int gmadr_bytes = s->vgpu->gvt->device_info.gmadr_bytes_in_cmd; - int op_size = ((1 << (cmd_val(s, 0) & GENMASK(20, 19) >> 19)) * - sizeof(u32)); + int op_size = (1 << ((cmd_val(s, 0) & GENMASK(20, 19)) >> 19)) * + sizeof(u32); unsigned long gma, gma_high; int ret = 0; -- 2.7.4