diff mbox series

[v4,05/12] net: mana: Set the DMA device max segment size

Message ID 1655345240-26411-6-git-send-email-longli@linuxonhyperv.com (mailing list archive)
State Superseded
Delegated to: Jason Gunthorpe
Headers show
Series Introduce Microsoft Azure Network Adapter (MANA) RDMA driver | expand

Commit Message

Long Li June 16, 2022, 2:07 a.m. UTC 
From: Ajay Sharma <sharmaajay@microsoft.com>

MANA hardware doesn't have any restrictions on the DMA segment size, set it
to the max allowed value.

Signed-off-by: Ajay Sharma <sharmaajay@microsoft.com>
Signed-off-by: Long Li <longli@microsoft.com>
---
Change log:
v2: Use the max allowed value as the hardware doesn't have any limit

 drivers/net/ethernet/microsoft/mana/gdma_main.c | 6 ++++++
 1 file changed, 6 insertions(+)

Comments

Dexuan Cui July 11, 2022, 1:14 a.m. UTC | #1 
> From: longli@linuxonhyperv.com <longli@linuxonhyperv.com>
> Sent: Wednesday, June 15, 2022 7:07 PM
> ...
> From: Ajay Sharma <sharmaajay@microsoft.com>
> 
> MANA hardware doesn't have any restrictions on the DMA segment size, set it
> to the max allowed value.
> 
> Signed-off-by: Ajay Sharma <sharmaajay@microsoft.com>
> Signed-off-by: Long Li <longli@microsoft.com>

Reviewed-by: Dexuan Cui <decui@microsoft.com>
diff mbox series

Patch

diff --git a/drivers/net/ethernet/microsoft/mana/gdma_main.c b/drivers/net/ethernet/microsoft/mana/gdma_main.c
index 7b42b78b7ddf..0c38c9a539f9 100644
--- a/drivers/net/ethernet/microsoft/mana/gdma_main.c
+++ b/drivers/net/ethernet/microsoft/mana/gdma_main.c
@@ -1387,6 +1387,12 @@  static int mana_gd_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	if (err)
 		goto release_region;
 
+	err = dma_set_max_seg_size(&pdev->dev, UINT_MAX);
+	if (err) {
+		dev_err(&pdev->dev, "Failed to set dma device segment size\n");
+		goto release_region;
+	}
+
 	err = -ENOMEM;
 	gc = vzalloc(sizeof(*gc));
 	if (!gc)