Re: [PATCH 3/4] drm/i915/guc: Inject probe errors for MMIO send

On Mon, Oct 11, 2021 at 08:51:05PM +0530, Thanneeru Srinivasulu wrote:

Injecting probe errors -ENXIO for MMIO send.

Signed-off-by: Thanneeru Srinivasulu thanneeru.srinivasulu@intel.com

Reviewed-by: Matthew Brost matthew.brost@intel.com

---

drivers/gpu/drm/i915/gt/uc/intel_guc.c | 4 ++++ 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.c b/drivers/gpu/drm/i915/gt/uc/intel_guc.c index 8f8182bf7c11..490d66712afc 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.c @@ -403,6 +403,10 @@ int intel_guc_send_mmio(struct intel_guc *guc, const u32 *request, u32 len, int i; int ret;

• ret = i915_inject_probe_error(i915, -ENXIO);
• if (ret)

• return ret;
  

• GEM_BUG_ON(!len); GEM_BUG_ON(len > guc->send_regs.count);

-- 2.25.1