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37 lines
1.3 KiB
37 lines
1.3 KiB
From d2b13233879ca1268a1c027d4573109e5a777811 Mon Sep 17 00:00:00 2001
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From: Florian Fainelli <f.fainelli@gmail.com>
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Date: Thu, 23 Jun 2016 14:23:12 -0700
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Subject: [PATCH 1/3] net: bgmac: Fix SOF bit checking
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We are checking for the Start of Frame bit in the ctl1 word, while this
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bit is set in the ctl0 word instead. Read the ctl0 word and update the
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check to verify that.
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Fixes: 9cde94506eac ("bgmac: implement scatter/gather support")
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Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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drivers/net/ethernet/broadcom/bgmac.c | 5 +++--
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1 file changed, 3 insertions(+), 2 deletions(-)
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--- a/drivers/net/ethernet/broadcom/bgmac.c
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+++ b/drivers/net/ethernet/broadcom/bgmac.c
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@@ -269,15 +269,16 @@ static void bgmac_dma_tx_free(struct bgm
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while (ring->start != ring->end) {
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int slot_idx = ring->start % BGMAC_TX_RING_SLOTS;
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struct bgmac_slot_info *slot = &ring->slots[slot_idx];
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- u32 ctl1;
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+ u32 ctl0, ctl1;
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int len;
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if (slot_idx == empty_slot)
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break;
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+ ctl0 = le32_to_cpu(ring->cpu_base[slot_idx].ctl0);
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ctl1 = le32_to_cpu(ring->cpu_base[slot_idx].ctl1);
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len = ctl1 & BGMAC_DESC_CTL1_LEN;
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- if (ctl1 & BGMAC_DESC_CTL0_SOF)
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+ if (ctl0 & BGMAC_DESC_CTL0_SOF)
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/* Unmap no longer used buffer */
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dma_unmap_single(dma_dev, slot->dma_addr, len,
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DMA_TO_DEVICE);
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