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6d0d4ce72f
At the request of rsalvaterra, add this patch to fix an issue
affecting tg3 ethernet interfaces[1].
1. https://github.com/openwrt/openwrt/pull/17271#issuecomment-2543836518
Tested-by: Rui Salvaterra <rsalvaterra@gmail.com>
Signed-off-by: John Audia <therealgraysky@proton.me>
Link: https://github.com/openwrt/openwrt/pull/17282
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
(cherry picked from commit a3c484c3b9)
32 lines
1.1 KiB
Diff
32 lines
1.1 KiB
Diff
From f992b15965177e2f280fb6f41f292214f9a6f8d5 Mon Sep 17 00:00:00 2001
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From: Pavan Chebbi <pavan.chebbi@broadcom.com>
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Date: Tue, 10 Dec 2024 03:28:31 -0800
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Subject: [PATCH] tg3: Fix DMA allocations on 57766 devices
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The coherent DMA mask of 31b may not be accepted if
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the DMA mask is configured to use higher memories of
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64b. Set the DMA mask also to lower 32b for 57766
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devices.
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Fixes: 614f4d166eee ("tg3: Set coherent DMA mask bits to 31 for BCM57766 chipsets")
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Reported-By: Rui Salvaterra <rsalvaterra@gmail.com>
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Signed-off-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
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---
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drivers/net/ethernet/broadcom/tg3.c | 4 +++-
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1 file changed, 3 insertions(+), 1 deletion(-)
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--- a/drivers/net/ethernet/broadcom/tg3.c
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+++ b/drivers/net/ethernet/broadcom/tg3.c
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@@ -17731,8 +17731,10 @@ static int tg3_init_one(struct pci_dev *
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} else
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persist_dma_mask = dma_mask = DMA_BIT_MASK(64);
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- if (tg3_asic_rev(tp) == ASIC_REV_57766)
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+ if (tg3_asic_rev(tp) == ASIC_REV_57766) {
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+ dma_mask = DMA_BIT_MASK(32);
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persist_dma_mask = DMA_BIT_MASK(31);
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+ }
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/* Configure DMA attributes. */
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if (dma_mask > DMA_BIT_MASK(32)) {
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