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Commit 39069691 authored by Matt Carlson's avatar Matt Carlson Committed by David S. Miller
Browse files

tg3: Disable new DMA engine for 57766 



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: default avatarMatt Carlson <mcarlson@broadcom.com>
Reviewed-by: default avatarMichael Chan <mchan@broadcom.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 16dc459c

drivers/net/ethernet/broadcom/tg3.c

+0 −5
Original line number Diff line number Diff line
@@ -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 ||