[PATCH net-next v0 2/4] drivers: net: xgene: Implement the backward compatibility with the old and new firmware w.r.t Tx completion IRQ interrupt.
From: Suman Tripathi <hidden>
Date: 2015-06-23 09:18:29
Subsystem:
applied micro (apm) x-gene soc ethernet driver, networking drivers, the rest · Maintainers:
Iyappan Subramanian, Keyur Chudgar, Quan Nguyen, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
This patch implements the backward compatibility with the old firmware where the Tx completion IRQ interrupt was absent whereas incase of new firmware the Tx completion IRQ interrupt is present. Signed-off-by: Iyappan Subramanian <redacted> Signed-off-by: Suman Tripathi <redacted> --- drivers/net/ethernet/apm/xgene/xgene_enet_main.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c
index c8f97a7..946ebde 100644
--- a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c
+++ b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c@@ -1024,11 +1024,13 @@ static int xgene_enet_get_resources(struct xgene_enet_pdata *pdata) if (pdata->phy_mode != PHY_INTERFACE_MODE_RGMII) { ret = platform_get_irq(pdev, 1); if (ret <= 0) { - dev_err(dev, "Unable to get ENET Tx completion IRQ\n"); - ret = ret ? : -ENXIO; - return ret; - } - pdata->txc_irq = ret; + pdata->cq_cnt = 0; + dev_info(dev, "Unable to get Tx completion IRQ," + "using Rx IRQ instead\n"); + } else { + pdata->cq_cnt = XGENE_MAX_TXC_RINGS; + pdata->txc_irq = ret; + } } pdata->clk = devm_clk_get(&pdev->dev, NULL);
@@ -1105,13 +1107,11 @@ static void xgene_enet_setup_ops(struct xgene_enet_pdata *pdata) pdata->mac_ops = &xgene_sgmac_ops; pdata->port_ops = &xgene_sgport_ops; pdata->rm = RM1; - pdata->cq_cnt = XGENE_MAX_TXC_RINGS; break; default: pdata->mac_ops = &xgene_xgmac_ops; pdata->port_ops = &xgene_xgport_ops; pdata->rm = RM0; - pdata->cq_cnt = XGENE_MAX_TXC_RINGS; break; } --
1.8.2.1