drm/i915/guc: Don't pass CTB while reading

Since we only have one RECV buffer we don't need to explicitly pass
it to the read function.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20200117082039.65644-4-michal.wajdeczko@intel.com

diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c
index a373ca1..a381fd0 100644 (file)
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c
@@ -576,8 +576,9 @@ static inline bool ct_header_is_response(u32 header)
        return !!(header & GUC_CT_MSG_IS_RESPONSE);
 }
 
-static int ctb_read(struct intel_guc_ct_buffer *ctb, u32 *data)
+static int ct_read(struct intel_guc_ct *ct, u32 *data)
 {
+       struct intel_guc_ct_buffer *ctb = &ct->ctbs[CTB_RECV];
        struct guc_ct_buffer_desc *desc = ctb->desc;
        u32 head = desc->head;
        u32 tail = desc->tail;
@@ -830,7 +831,6 @@ static int ct_handle_request(struct intel_guc_ct *ct, const u32 *msg)
  */
 void intel_guc_ct_event_handler(struct intel_guc_ct *ct)
 {
-       struct intel_guc_ct_buffer *ctb = &ct->ctbs[CTB_RECV];
        u32 msg[GUC_CT_MSG_LEN_MASK + 1]; /* one extra dw for the header */
        int err = 0;
 
@@ -840,7 +840,7 @@ void intel_guc_ct_event_handler(struct intel_guc_ct *ct)
        }
 
        do {
-               err = ctb_read(ctb, msg);
+               err = ct_read(ct, msg);
                if (err)
                        break;