drm/i915/gvt: fix return value in mul_force_wake_write

All mmio handlers should return a negetive value for failure, not 1.

Signed-off-by: Changbin Du <changbin.du@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>

diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c
index e06d5f37bb92d05d4c22456fc97cd8a7042391b4..8cbaf1c83720b796029450c5bb42de27c8b0934f 100644 (file)
--- a/drivers/gpu/drm/i915/gvt/handlers.c
+++ b/drivers/gpu/drm/i915/gvt/handlers.c
@@ -220,7 +220,7 @@ static int mul_force_wake_write(struct intel_vgpu *vgpu,
                default:
                        /*should not hit here*/
                        gvt_err("invalid forcewake offset 0x%x\n", offset);
-                       return 1;
+                       return -EINVAL;
                }
        } else {
                ack_reg_offset = FORCEWAKE_ACK_HSW_REG;