From: Felix Fietkau <nbd@nbd.name>
Date: Wed, 27 Feb 2019 18:38:29 +0000 (+0100)
Subject: mt76: rewrite dma descriptor base and ring size on queue reset
X-Git-Tag: v5.1-rc3~35^2~44^2~6^2~17
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=fc7801021733b9fbf213ae2bde5dc5e73896a9c7;p=linux-block.git

mt76: rewrite dma descriptor base and ring size on queue reset

Useful in case the hardware reset clobbers these values

Signed-off-by: Felix Fietkau <nbd@nbd.name>
---

diff --git a/drivers/net/wireless/mediatek/mt76/dma.c b/drivers/net/wireless/mediatek/mt76/dma.c
index 99e341cb1f92..76629b98c78d 100644
--- a/drivers/net/wireless/mediatek/mt76/dma.c
+++ b/drivers/net/wireless/mediatek/mt76/dma.c
@@ -130,6 +130,8 @@ mt76_dma_tx_cleanup_idx(struct mt76_dev *dev, struct mt76_queue *q, int idx,
 static void
 mt76_dma_sync_idx(struct mt76_dev *dev, struct mt76_queue *q)
 {
+	iowrite32(q->desc_dma, &q->regs->desc_base);
+	iowrite32(q->ndesc, &q->regs->ring_size);
 	q->head = ioread32(&q->regs->dma_idx);
 	q->tail = q->head;
 	iowrite32(q->head, &q->regs->cpu_idx);