[PATCH net-next 01/10] tg3: Disable new DMA engine for 57766
DORMANTno replies
REVIEWED: 1 (1M)
From: Matt Carlson <hidden>
Date: 2012-02-14 01:21:03
Subsystem:
broadcom tg3 gigabit ethernet driver, networking drivers, the rest · Maintainers:
Pavan Chebbi, Michael Chan, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
1 review trailer (1 from subsystem maintainers).
A bug was found in the new DMA engine for the 57766. This patch disables it, which causes the device to fallback to the old DMA engine. Signed-off-by: Matt Carlson <redacted> Reviewed-by: Michael Chan <mchan@broadcom.com> --- drivers/net/ethernet/broadcom/tg3.c | 5 ----- 1 files changed, 0 insertions(+), 5 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c
index d418f95..0a765f1 100644
--- a/drivers/net/ethernet/broadcom/tg3.c
+++ b/drivers/net/ethernet/broadcom/tg3.c@@ -8896,9 +8896,6 @@ static int tg3_reset_hw(struct tg3 *tp, int reset_phy) if (tg3_flag(tp, PCI_EXPRESS)) rdmac_mode |= RDMAC_MODE_FIFO_LONG_BURST; - if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57766) - rdmac_mode |= RDMAC_MODE_JMB_2K_MMRR; - if (tg3_flag(tp, HW_TSO_1) || tg3_flag(tp, HW_TSO_2) || tg3_flag(tp, HW_TSO_3))
@@ -14190,8 +14187,6 @@ static int __devinit tg3_get_invariants(struct tg3 *tp) if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719) tp->dma_limit = TG3_TX_BD_DMA_MAX_4K; - else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57766) - tp->dma_limit = TG3_TX_BD_DMA_MAX_2K; if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717 || GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719 ||
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1.7.3.4