On Tue, 24 Oct 2017, SF Markus Elfring <elfr...@users.sourceforge.net> wrote:
> From: Markus Elfring <elfr...@users.sourceforge.net>
> Date: Tue, 24 Oct 2017 14:20:06 +0200
>
> Add a jump target so that a call of the function "gvt_vgpu_err" is stored
> only once at the end of this function implementation.
> Replace two calls by goto statements.
>
> This issue was detected by using the Coccinelle software.
I don't think this is an issue or an improvement.
BR,
Jani.
>
> Signed-off-by: Markus Elfring <elfr...@users.sourceforge.net>
> ---
> drivers/gpu/drm/i915/gvt/cmd_parser.c | 18 ++++++++++--------
> 1 file changed, 10 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/gvt/cmd_parser.c
> b/drivers/gpu/drm/i915/gvt/cmd_parser.c
> index 2c0ccbb817dc..caa181380958 100644
> --- a/drivers/gpu/drm/i915/gvt/cmd_parser.c
> +++ b/drivers/gpu/drm/i915/gvt/cmd_parser.c
> @@ -2640,10 +2640,9 @@ static int shadow_workload_ring_buffer(struct
> intel_vgpu_workload *workload)
> if (gma_head > gma_tail) {
> ret = copy_gma_to_hva(vgpu, vgpu->gtt.ggtt_mm,
> gma_head, gma_top, shadow_ring_buffer_va);
> - if (ret < 0) {
> - gvt_vgpu_err("fail to copy guest ring buffer\n");
> - return ret;
> - }
> + if (ret < 0)
> + goto report_failure;
> +
> shadow_ring_buffer_va += ret;
> gma_head = workload->rb_start;
> }
> @@ -2651,11 +2650,14 @@ static int shadow_workload_ring_buffer(struct
> intel_vgpu_workload *workload)
> /* copy head or start <-> tail */
> ret = copy_gma_to_hva(vgpu, vgpu->gtt.ggtt_mm, gma_head, gma_tail,
> shadow_ring_buffer_va);
> - if (ret < 0) {
> - gvt_vgpu_err("fail to copy guest ring buffer\n");
> - return ret;
> - }
> + if (ret < 0)
> + goto report_failure;
> +
> return 0;
> +
> +report_failure:
> + gvt_vgpu_err("fail to copy guest ring buffer\n");
> + return ret;
> }
>
> int intel_gvt_scan_and_shadow_ringbuffer(struct intel_vgpu_workload
> *workload)
--
Jani Nikula, Intel Open Source Technology Center
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