diff options
| author | John Audia | 2024-12-15 14:30:52 +0000 |
|---|---|---|
| committer | Hauke Mehrtens | 2024-12-16 00:10:42 +0000 |
| commit | 6d0d4ce72f0e00a21a2a2430211015eb623cfbfe (patch) | |
| tree | 087a7a98b269a1d8415bbfa046b7fad3c0f494a9 | |
| parent | 28602452df37f21033e2eabc83cfd6a659d8a4d9 (diff) | |
| download | openwrt-6d0d4ce72f0e00a21a2a2430211015eb623cfbfe.tar.gz | |
kernel: generic: tg3: Fix DMA allocations on 57766 devices
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 a3c484c3b9468a7bd9190b0fee027bb133cee3d5)
| -rw-r--r-- | target/linux/generic/pending-6.6/791-tg3-Fix-DMA-allocations-on-57766-devices.patch | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/target/linux/generic/pending-6.6/791-tg3-Fix-DMA-allocations-on-57766-devices.patch b/target/linux/generic/pending-6.6/791-tg3-Fix-DMA-allocations-on-57766-devices.patch new file mode 100644 index 0000000000..a90d77c9f0 --- /dev/null +++ b/target/linux/generic/pending-6.6/791-tg3-Fix-DMA-allocations-on-57766-devices.patch @@ -0,0 +1,31 @@ +From f992b15965177e2f280fb6f41f292214f9a6f8d5 Mon Sep 17 00:00:00 2001 +From: Pavan Chebbi <pavan.chebbi@broadcom.com> +Date: Tue, 10 Dec 2024 03:28:31 -0800 +Subject: [PATCH] tg3: Fix DMA allocations on 57766 devices + +The coherent DMA mask of 31b may not be accepted if +the DMA mask is configured to use higher memories of +64b. Set the DMA mask also to lower 32b for 57766 +devices. + +Fixes: 614f4d166eee ("tg3: Set coherent DMA mask bits to 31 for BCM57766 chipsets") +Reported-By: Rui Salvaterra <rsalvaterra@gmail.com> +Signed-off-by: Pavan Chebbi <pavan.chebbi@broadcom.com> +--- + drivers/net/ethernet/broadcom/tg3.c | 4 +++- + 1 file changed, 3 insertions(+), 1 deletion(-) + +--- a/drivers/net/ethernet/broadcom/tg3.c ++++ b/drivers/net/ethernet/broadcom/tg3.c +@@ -17731,8 +17731,10 @@ static int tg3_init_one(struct pci_dev * + } else + persist_dma_mask = dma_mask = DMA_BIT_MASK(64); + +- if (tg3_asic_rev(tp) == ASIC_REV_57766) ++ if (tg3_asic_rev(tp) == ASIC_REV_57766) { ++ dma_mask = DMA_BIT_MASK(32); + persist_dma_mask = DMA_BIT_MASK(31); ++ } + + /* Configure DMA attributes. */ + if (dma_mask > DMA_BIT_MASK(32)) { |