wifi: mt76: mt7925: skip DMA re-init selectively

Add a flag to skip it on chips that don't need it.

Signed-off-by: Jeff Hsu <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>

mt7925/pci.c

@@ -650,6 +650,9 @@ static int mt7925_pci_probe(struct pci_dev *pdev,
 	if (!mt7925_disable_aspm && mt76_pci_aspm_supported(pdev))
 		dev->aspm_supported = true;
 
+	if (is_mt7928(&dev->mt76))
+		dev->skip_wpdma_reinit = true;
+
 	ret = __mt792x_mcu_fw_pmctrl(dev);
 	if (ret)
 		goto err_free_dev;

mt792x.h

@@ -273,6 +273,7 @@ struct mt792x_dev {
 	bool hif_idle:1;
 	bool hif_resumed:1;
 	bool regd_change:1;
+	bool skip_wpdma_reinit:1;
 	wait_queue_head_t wait;
 
 	struct work_struct init_work;

mt792x_dma.c

@@ -418,6 +418,9 @@ int mt792x_wpdma_reinit_cond(struct mt792x_dev *dev)
 	struct mt76_connac_pm *pm = &dev->pm;
 	int err;
 
+	if (dev->skip_wpdma_reinit)
+		return 0;
+
 	/* check if the wpdma must be reinitialized */
 	if (mt792x_dma_need_reinit(dev)) {
 		/* disable interrutpts */