diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/701-net-0348-staging-fsl-dpaa2-mac-reverse-order-of-handling-stop.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/701-net-0348-staging-fsl-dpaa2-mac-reverse-order-of-handling-stop.patch | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-5.4/701-net-0348-staging-fsl-dpaa2-mac-reverse-order-of-handling-stop.patch b/target/linux/layerscape/patches-5.4/701-net-0348-staging-fsl-dpaa2-mac-reverse-order-of-handling-stop.patch new file mode 100644 index 0000000000..6788b8425b --- /dev/null +++ b/target/linux/layerscape/patches-5.4/701-net-0348-staging-fsl-dpaa2-mac-reverse-order-of-handling-stop.patch @@ -0,0 +1,37 @@ +From c9db7ecdd08e38fb1af207c2a7e810b4bd0d1043 Mon Sep 17 00:00:00 2001 +From: Ioana Ciornei <ioana.ciornei@nxp.com> +Date: Wed, 11 Dec 2019 17:06:40 +0200 +Subject: [PATCH] staging: fsl-dpaa2/mac: reverse order of handling stop/start + IRQs + +Both the LINK_UP_REQ and the LINK_DOWN_REQ IRQs can be received in the +same time when a reset is performed on the DPMAC's partner. +Handle first the link down and then the link up so that we do not +trigger a phylib WARNING like the following: + +[ 446.272011] called from state NOLINK +[ 446.275604] WARNING: CPU: 0 PID: 473 at drivers/net/phy/phy.c:874 +phy_start+0x44/0xa8 + +Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> +--- + drivers/staging/fsl-dpaa2/mac/mac.c | 5 ++--- + 1 file changed, 2 insertions(+), 3 deletions(-) + +--- a/drivers/staging/fsl-dpaa2/mac/mac.c ++++ b/drivers/staging/fsl-dpaa2/mac/mac.c +@@ -482,12 +482,11 @@ static irqreturn_t dpaa2_mac_irq_handler + configure_link(priv, &link_cfg); + } + +- if (status & DPMAC_IRQ_EVENT_LINK_UP_REQ) +- phy_start(ndev->phydev); +- + if (status & DPMAC_IRQ_EVENT_LINK_DOWN_REQ) + phy_stop(ndev->phydev); + ++ if (status & DPMAC_IRQ_EVENT_LINK_UP_REQ) ++ phy_start(ndev->phydev); + out: + dpmac_clear_irq_status(mc_dev->mc_io, 0, mc_dev->mc_handle, + DPMAC_IRQ_INDEX, status); |