diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gvt/handlers.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/handlers.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c index a6ade66349bd..25f78196b964 100644 --- a/drivers/gpu/drm/i915/gvt/handlers.c +++ b/drivers/gpu/drm/i915/gvt/handlers.c @@ -1254,18 +1254,15 @@ static int send_display_ready_uevent(struct intel_vgpu *vgpu, int ready) static int pvinfo_mmio_write(struct intel_vgpu *vgpu, unsigned int offset, void *p_data, unsigned int bytes) { - u32 data; - int ret; - - write_vreg(vgpu, offset, p_data, bytes); - data = vgpu_vreg(vgpu, offset); + u32 data = *(u32 *)p_data; + bool invalid_write = false; switch (offset) { case _vgtif_reg(display_ready): send_display_ready_uevent(vgpu, data ? 1 : 0); break; case _vgtif_reg(g2v_notify): - ret = handle_g2v_notification(vgpu, data); + handle_g2v_notification(vgpu, data); break; /* add xhot and yhot to handled list to avoid error log */ case _vgtif_reg(cursor_x_hot): @@ -1282,13 +1279,19 @@ static int pvinfo_mmio_write(struct intel_vgpu *vgpu, unsigned int offset, case _vgtif_reg(execlist_context_descriptor_hi): break; case _vgtif_reg(rsv5[0])..._vgtif_reg(rsv5[3]): + invalid_write = true; enter_failsafe_mode(vgpu, GVT_FAILSAFE_INSUFFICIENT_RESOURCE); break; default: + invalid_write = true; gvt_vgpu_err("invalid pvinfo write offset %x bytes %x data %x\n", offset, bytes, data); break; } + + if (!invalid_write) + write_vreg(vgpu, offset, p_data, bytes); + return 0; } |