1 files changed, 0 insertions, 88 deletions
diff --git a/target/linux/generic/patches-4.0/072-11-bgmac-fix-DMA-rx-corruption.patch b/target/linux/generic/patches-4.0/072-11-bgmac-fix-DMA-rx-corruption.patch
deleted file mode 100644
index 2e670d89b0..0000000000
--- a/target/linux/generic/patches-4.0/072-11-bgmac-fix-DMA-rx-corruption.patch
+++ /dev/null
@@ -1,88 +0,0 @@
-From: Felix Fietkau <nbd@openwrt.org>
-Date: Sun, 12 Apr 2015 11:59:47 +0200
-Subject: [PATCH] bgmac: fix DMA rx corruption
-
-The driver needs to inform the hardware about the first invalid (not yet
-filled) rx slot, by writing its DMA descriptor pointer offset to the
-BGMAC_DMA_RX_INDEX register.
-
-This register was set to a value exceeding the rx ring size, effectively
-allowing the hardware constant access to the full ring, regardless of
-which slots are initialized.
-
-To fix this issue, always mark the last filled rx slot as invalid.
-
-Signed-off-by: Felix Fietkau <nbd@openwrt.org>
----
-
---- a/drivers/net/ethernet/broadcom/bgmac.c
-+++ b/drivers/net/ethernet/broadcom/bgmac.c
-@@ -366,6 +366,16 @@ static int bgmac_dma_rx_skb_for_slot(str
- 	return 0;
- }
- 
-+static void bgmac_dma_rx_update_index(struct bgmac *bgmac,
-+				      struct bgmac_dma_ring *ring)
-+{
-+	wmb();
-+
-+	bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_INDEX,
-+		    ring->index_base +
-+		    ring->end * sizeof(struct bgmac_dma_desc));
-+}
-+
- static void bgmac_dma_rx_setup_desc(struct bgmac *bgmac,
- 				    struct bgmac_dma_ring *ring, int desc_idx)
- {
-@@ -384,6 +394,8 @@ static void bgmac_dma_rx_setup_desc(stru
- 	dma_desc->addr_high = cpu_to_le32(upper_32_bits(ring->slots[desc_idx].dma_addr));
- 	dma_desc->ctl0 = cpu_to_le32(ctl0);
- 	dma_desc->ctl1 = cpu_to_le32(ctl1);
-+
-+	ring->end = desc_idx;
- }
- 
- static void bgmac_dma_rx_poison_buf(struct device *dma_dev,
-@@ -411,9 +423,7 @@ static int bgmac_dma_rx_read(struct bgma
- 	end_slot &= BGMAC_DMA_RX_STATDPTR;
- 	end_slot /= sizeof(struct bgmac_dma_desc);
- 
--	ring->end = end_slot;
--
--	while (ring->start != ring->end) {
-+	while (ring->start != end_slot) {
- 		struct device *dma_dev = bgmac->core->dma_dev;
- 		struct bgmac_slot_info *slot = &ring->slots[ring->start];
- 		struct bgmac_rx_header *rx = slot->buf + BGMAC_RX_BUF_OFFSET;
-@@ -476,6 +486,8 @@ static int bgmac_dma_rx_read(struct bgma
- 			break;
- 	}
- 
-+	bgmac_dma_rx_update_index(bgmac, ring);
-+
- 	return handled;
- }
- 
-@@ -695,6 +707,8 @@ static int bgmac_dma_init(struct bgmac *
- 		if (ring->unaligned)
- 			bgmac_dma_rx_enable(bgmac, ring);
- 
-+		ring->start = 0;
-+		ring->end = 0;
- 		for (j = 0; j < ring->num_slots; j++) {
- 			err = bgmac_dma_rx_skb_for_slot(bgmac, &ring->slots[j]);
- 			if (err)
-@@ -703,12 +717,7 @@ static int bgmac_dma_init(struct bgmac *
- 			bgmac_dma_rx_setup_desc(bgmac, ring, j);
- 		}
- 
--		bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_INDEX,
--			    ring->index_base +
--			    ring->num_slots * sizeof(struct bgmac_dma_desc));
--
--		ring->start = 0;
--		ring->end = 0;
-+		bgmac_dma_rx_update_index(bgmac, ring);
- 	}
- 
- 	return 0;