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Date: Fri, 24 Apr 2015 02:32:07 -0500 From: Vince Bridgers <vbridger@...nsource.altera.com> To: <netdev@...r.kernel.org>, <nios2-dev@...ts.rocketboards.org>, <linux-kernel@...r.kernel.org> CC: <vbridger@...era.com>, <cnphoon@...era.com>, <ennoerlangen@...il.com>, Vince Bridgers <vbridger@...nsource.altera.com> Subject: [PATCH] net: eth: altera: Resolve false errors from MSGDMA to TSE From: Chee Nouk Phoon <cnphoon@...era.com> This patch resolves false errors from MSGDMA in TX mSGDMA MM to ST mode, and is a continuation of the patch recently submitted by Andrea Oetken. The MSGDMA had a logic bug that masked detection of this issue prior to Quartus 14.1/Build 164. When the MSGDMA logic bug was addressed in Quartus 14.1/Build 164, the driver problem was exposed. The problem is corrected by making sure MSGDMA_DESC_CTL_TR_ERR_IRQ is not set for any of the transmit DMA descriptors, and only used for receive descriptors. Fixes: 71cd26e altera tse: Error-Bit on tx-avalon-stream always set. Signed-off-by: Chee Nouk Phoon <cnphoon@...era.com> Signed-off-by: Vince Bridgers <vbridger@...nsource.altera.com>a Cc: Andreas Oetken <ennoerlangen@...il.com> --- drivers/net/ethernet/altera/altera_msgdmahw.h | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/net/ethernet/altera/altera_msgdmahw.h b/drivers/net/ethernet/altera/altera_msgdmahw.h index eba070f..89cd11d 100644 --- a/drivers/net/ethernet/altera/altera_msgdmahw.h +++ b/drivers/net/ethernet/altera/altera_msgdmahw.h @@ -58,15 +58,12 @@ struct msgdma_extended_desc { /* Tx buffer control flags */ #define MSGDMA_DESC_CTL_TX_FIRST (MSGDMA_DESC_CTL_GEN_SOP | \ - MSGDMA_DESC_CTL_TR_ERR_IRQ | \ MSGDMA_DESC_CTL_GO) -#define MSGDMA_DESC_CTL_TX_MIDDLE (MSGDMA_DESC_CTL_TR_ERR_IRQ | \ - MSGDMA_DESC_CTL_GO) +#define MSGDMA_DESC_CTL_TX_MIDDLE (MSGDMA_DESC_CTL_GO) #define MSGDMA_DESC_CTL_TX_LAST (MSGDMA_DESC_CTL_GEN_EOP | \ MSGDMA_DESC_CTL_TR_COMP_IRQ | \ - MSGDMA_DESC_CTL_TR_ERR_IRQ | \ MSGDMA_DESC_CTL_GO) #define MSGDMA_DESC_CTL_TX_SINGLE (MSGDMA_DESC_CTL_GEN_SOP | \ -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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