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GET /api/patches/562646/?format=api
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{
    "id": 562646,
    "url": "http://patchwork.ozlabs.org/api/patches/562646/?format=api",
    "web_url": "http://patchwork.ozlabs.org/project/intel-wired-lan/patch/1451932392-15538-4-git-send-email-deepthi.kavalur@intel.com/",
    "project": {
        "id": 46,
        "url": "http://patchwork.ozlabs.org/api/projects/46/?format=api",
        "name": "Intel Wired Ethernet development",
        "link_name": "intel-wired-lan",
        "list_id": "intel-wired-lan.osuosl.org",
        "list_email": "intel-wired-lan@osuosl.org",
        "web_url": "",
        "scm_url": "",
        "webscm_url": "",
        "list_archive_url": "",
        "list_archive_url_format": "",
        "commit_url_format": ""
    },
    "msgid": "<1451932392-15538-4-git-send-email-deepthi.kavalur@intel.com>",
    "list_archive_url": null,
    "date": "2016-01-04T18:33:03",
    "name": "[next,S26,03/12] i40e: fix bug in dma sync",
    "commit_ref": null,
    "pull_url": null,
    "state": "accepted",
    "archived": false,
    "hash": "ece73b3b4646af6255a861e5d2d631333b617453",
    "submitter": {
        "id": 67654,
        "url": "http://patchwork.ozlabs.org/api/people/67654/?format=api",
        "name": "Deepthi Kavalur",
        "email": "deepthi.kavalur@intel.com"
    },
    "delegate": {
        "id": 68,
        "url": "http://patchwork.ozlabs.org/api/users/68/?format=api",
        "username": "jtkirshe",
        "first_name": "Jeff",
        "last_name": "Kirsher",
        "email": "jeffrey.t.kirsher@intel.com"
    },
    "mbox": "http://patchwork.ozlabs.org/project/intel-wired-lan/patch/1451932392-15538-4-git-send-email-deepthi.kavalur@intel.com/mbox/",
    "series": [],
    "comments": "http://patchwork.ozlabs.org/api/patches/562646/comments/",
    "check": "pending",
    "checks": "http://patchwork.ozlabs.org/api/patches/562646/checks/",
    "tags": {},
    "related": [],
    "headers": {
        "Return-Path": "<intel-wired-lan-bounces@lists.osuosl.org>",
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        ],
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        "X-IronPort-AV": "E=Sophos;i=\"5.20,521,1444719600\"; d=\"scan'208\";a=\"720053575\"",
        "From": "Deepthi Kavalur <deepthi.kavalur@intel.com>",
        "To": "intel-wired-lan@lists.osuosl.org",
        "Date": "Mon,  4 Jan 2016 10:33:03 -0800",
        "Message-Id": "<1451932392-15538-4-git-send-email-deepthi.kavalur@intel.com>",
        "X-Mailer": "git-send-email 2.1.0",
        "In-Reply-To": "<1451932392-15538-1-git-send-email-deepthi.kavalur@intel.com>",
        "References": "<1451932392-15538-1-git-send-email-deepthi.kavalur@intel.com>",
        "Subject": "[Intel-wired-lan] [next PATCH S26 03/12] i40e: fix bug in dma sync",
        "X-BeenThere": "intel-wired-lan@lists.osuosl.org",
        "X-Mailman-Version": "2.1.18-1",
        "Precedence": "list",
        "List-Id": "Intel Wired Ethernet Linux Kernel Driver Development\n\t<intel-wired-lan.lists.osuosl.org>",
        "List-Unsubscribe": "<http://lists.osuosl.org/mailman/options/intel-wired-lan>, \n\t<mailto:intel-wired-lan-request@lists.osuosl.org?subject=unsubscribe>",
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        "List-Help": "<mailto:intel-wired-lan-request@lists.osuosl.org?subject=help>",
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        "MIME-Version": "1.0",
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        "Errors-To": "intel-wired-lan-bounces@lists.osuosl.org",
        "Sender": "\"Intel-wired-lan\" <intel-wired-lan-bounces@lists.osuosl.org>"
    },
    "content": "From: Jesse Brandeburg <jesse.brandeburg@intel.com>\n\nDriver was using an offset based off a dma handle while mapping and\nunmapping using sync_single_range_for[cpu|device], where it should\nbe using dma handle (returned from alloc_coherent) and the offset of the\nmemory to be sync'd.\n\nSigned-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>\nReviewed-by: Nelson, Shannon <shannon.nelson@intel.com>\nReviewed-by: Williams, Mitch A <mitch.a.williams@intel.com>\nChange-ID: I208256565b1595ff0e9171ab852de06b997917c6\n---\nTesting-Hints:\nTest traffic, test with DMA API debugging enabled.\n\n drivers/net/ethernet/intel/i40e/i40e_txrx.c   | 8 ++++----\n drivers/net/ethernet/intel/i40evf/i40e_txrx.c | 8 ++++----\n 2 files changed, 8 insertions(+), 8 deletions(-)",
    "diff": "diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c\nindex 7ea2689..7d81c1f 100644\n--- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c\n+++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c\n@@ -1218,8 +1218,8 @@ void i40e_alloc_rx_buffers_ps(struct i40e_ring *rx_ring, u16 cleaned_count)\n \t\t}\n \n \t\tdma_sync_single_range_for_device(rx_ring->dev,\n-\t\t\t\t\t\t bi->dma,\n-\t\t\t\t\t\t 0,\n+\t\t\t\t\t\t rx_ring->rx_bi[0].dma,\n+\t\t\t\t\t\t i * rx_ring->rx_hdr_len,\n \t\t\t\t\t\t rx_ring->rx_hdr_len,\n \t\t\t\t\t\t DMA_FROM_DEVICE);\n \t\t/* Refresh the desc even if buffer_addrs didn't change\n@@ -1534,8 +1534,8 @@ static int i40e_clean_rx_irq_ps(struct i40e_ring *rx_ring, int budget)\n \t\t\tskb_record_rx_queue(skb, rx_ring->queue_index);\n \t\t\t/* we are reusing so sync this buffer for CPU use */\n \t\t\tdma_sync_single_range_for_cpu(rx_ring->dev,\n-\t\t\t\t\t\t      rx_bi->dma,\n-\t\t\t\t\t\t      0,\n+\t\t\t\t\t\t      rx_ring->rx_bi[0].dma,\n+\t\t\t\t\t\t      i * rx_ring->rx_hdr_len,\n \t\t\t\t\t\t      rx_ring->rx_hdr_len,\n \t\t\t\t\t\t      DMA_FROM_DEVICE);\n \t\t}\ndiff --git a/drivers/net/ethernet/intel/i40evf/i40e_txrx.c b/drivers/net/ethernet/intel/i40evf/i40e_txrx.c\nindex 0e2c627..a1d907c 100644\n--- a/drivers/net/ethernet/intel/i40evf/i40e_txrx.c\n+++ b/drivers/net/ethernet/intel/i40evf/i40e_txrx.c\n@@ -699,8 +699,8 @@ void i40evf_alloc_rx_buffers_ps(struct i40e_ring *rx_ring, u16 cleaned_count)\n \t\t}\n \n \t\tdma_sync_single_range_for_device(rx_ring->dev,\n-\t\t\t\t\t\t bi->dma,\n-\t\t\t\t\t\t 0,\n+\t\t\t\t\t\t rx_ring->rx_bi[0].dma,\n+\t\t\t\t\t\t i * rx_ring->rx_hdr_len,\n \t\t\t\t\t\t rx_ring->rx_hdr_len,\n \t\t\t\t\t\t DMA_FROM_DEVICE);\n \t\t/* Refresh the desc even if buffer_addrs didn't change\n@@ -1006,8 +1006,8 @@ static int i40e_clean_rx_irq_ps(struct i40e_ring *rx_ring, int budget)\n \t\t\tskb_record_rx_queue(skb, rx_ring->queue_index);\n \t\t\t/* we are reusing so sync this buffer for CPU use */\n \t\t\tdma_sync_single_range_for_cpu(rx_ring->dev,\n-\t\t\t\t\t\t      rx_bi->dma,\n-\t\t\t\t\t\t      0,\n+\t\t\t\t\t\t      rx_ring->rx_bi[0].dma,\n+\t\t\t\t\t\t      i * rx_ring->rx_hdr_len,\n \t\t\t\t\t\t      rx_ring->rx_hdr_len,\n \t\t\t\t\t\t      DMA_FROM_DEVICE);\n \t\t}\n",
    "prefixes": [
        "next",
        "S26",
        "03/12"
    ]
}