From: Adrian Hunter <adrian.hunter@intel.com>
Date: Wed, 3 Jun 2026 09:07:42 +0000 (+0300)
Subject: i3c: mipi-i3c-hci: Move hci_dma_xfer_done() definition
X-Git-Tag: v7.2-rc1~72^2~36
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dc8691bf4fc4487e6e0618e43b7abb5ab6408a4c;p=thirdparty%2Flinux.git

i3c: mipi-i3c-hci: Move hci_dma_xfer_done() definition

Move hci_dma_xfer_done() earlier in the file to avoid a forward
declaration needed by a subsequent change.

No functional change.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260603090754.16252-6-adrian.hunter@intel.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
---

diff --git a/drivers/i3c/master/mipi-i3c-hci/dma.c b/drivers/i3c/master/mipi-i3c-hci/dma.c
index 3b14bc87bdf61..ad47bb2890d64 100644
--- a/drivers/i3c/master/mipi-i3c-hci/dma.c
+++ b/drivers/i3c/master/mipi-i3c-hci/dma.c
@@ -545,6 +545,55 @@ static int hci_dma_queue_xfer(struct i3c_hci *hci,
 	return 0;
 }
 
+static void hci_dma_xfer_done(struct i3c_hci *hci, struct hci_rh_data *rh)
+{
+	u32 op1_val, op2_val, resp, *ring_resp;
+	unsigned int tid, done_ptr = rh->done_ptr;
+	unsigned int done_cnt = 0;
+	struct hci_xfer *xfer;
+
+	for (;;) {
+		op2_val = rh_reg_read(RING_OPERATION2);
+		if (done_ptr == FIELD_GET(RING_OP2_CR_DEQ_PTR, op2_val))
+			break;
+
+		ring_resp = rh->resp + rh->resp_struct_sz * done_ptr;
+		resp = *ring_resp;
+		tid = RESP_TID(resp);
+		dev_dbg(&hci->master.dev, "resp = 0x%08x", resp);
+
+		xfer = rh->src_xfers[done_ptr];
+		if (!xfer) {
+			dev_dbg(&hci->master.dev, "orphaned ring entry");
+		} else {
+			hci_dma_unmap_xfer(hci, xfer, 1);
+			rh->src_xfers[done_ptr] = NULL;
+			xfer->ring_entry = -1;
+			xfer->response = resp;
+			if (tid != xfer->cmd_tid) {
+				dev_err(&hci->master.dev,
+					"response tid=%d when expecting %d\n",
+					tid, xfer->cmd_tid);
+				/* TODO: do something about it? */
+			}
+			if (xfer->completion)
+				complete(xfer->completion);
+			if (RESP_STATUS(resp))
+				hci->enqueue_blocked = true;
+		}
+
+		done_ptr = (done_ptr + 1) % rh->xfer_entries;
+		rh->done_ptr = done_ptr;
+		done_cnt += 1;
+	}
+
+	rh->xfer_space += done_cnt;
+	op1_val = rh_reg_read(RING_OPERATION1);
+	op1_val &= ~RING_OP1_CR_SW_DEQ_PTR;
+	op1_val |= FIELD_PREP(RING_OP1_CR_SW_DEQ_PTR, done_ptr);
+	rh_reg_write(RING_OPERATION1, op1_val);
+}
+
 static void hci_dma_unblock_enqueue(struct i3c_hci *hci)
 {
 	if (hci->enqueue_blocked) {
@@ -636,55 +685,6 @@ static int hci_dma_handle_error(struct i3c_hci *hci, struct hci_xfer *xfer_list,
 	return hci_dma_dequeue_xfer(hci, xfer_list, n) ? -EIO : 0;
 }
 
-static void hci_dma_xfer_done(struct i3c_hci *hci, struct hci_rh_data *rh)
-{
-	u32 op1_val, op2_val, resp, *ring_resp;
-	unsigned int tid, done_ptr = rh->done_ptr;
-	unsigned int done_cnt = 0;
-	struct hci_xfer *xfer;
-
-	for (;;) {
-		op2_val = rh_reg_read(RING_OPERATION2);
-		if (done_ptr == FIELD_GET(RING_OP2_CR_DEQ_PTR, op2_val))
-			break;
-
-		ring_resp = rh->resp + rh->resp_struct_sz * done_ptr;
-		resp = *ring_resp;
-		tid = RESP_TID(resp);
-		dev_dbg(&hci->master.dev, "resp = 0x%08x", resp);
-
-		xfer = rh->src_xfers[done_ptr];
-		if (!xfer) {
-			dev_dbg(&hci->master.dev, "orphaned ring entry");
-		} else {
-			hci_dma_unmap_xfer(hci, xfer, 1);
-			rh->src_xfers[done_ptr] = NULL;
-			xfer->ring_entry = -1;
-			xfer->response = resp;
-			if (tid != xfer->cmd_tid) {
-				dev_err(&hci->master.dev,
-					"response tid=%d when expecting %d\n",
-					tid, xfer->cmd_tid);
-				/* TODO: do something about it? */
-			}
-			if (xfer->completion)
-				complete(xfer->completion);
-			if (RESP_STATUS(resp))
-				hci->enqueue_blocked = true;
-		}
-
-		done_ptr = (done_ptr + 1) % rh->xfer_entries;
-		rh->done_ptr = done_ptr;
-		done_cnt += 1;
-	}
-
-	rh->xfer_space += done_cnt;
-	op1_val = rh_reg_read(RING_OPERATION1);
-	op1_val &= ~RING_OP1_CR_SW_DEQ_PTR;
-	op1_val |= FIELD_PREP(RING_OP1_CR_SW_DEQ_PTR, done_ptr);
-	rh_reg_write(RING_OPERATION1, op1_val);
-}
-
 static int hci_dma_request_ibi(struct i3c_hci *hci, struct i3c_dev_desc *dev,
 			       const struct i3c_ibi_setup *req)
 {