diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/701-net-0161-staging-fsl-dpaa2-mac-Request-atomic-context-MC-port.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/701-net-0161-staging-fsl-dpaa2-mac-Request-atomic-context-MC-port.patch | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-5.4/701-net-0161-staging-fsl-dpaa2-mac-Request-atomic-context-MC-port.patch b/target/linux/layerscape/patches-5.4/701-net-0161-staging-fsl-dpaa2-mac-Request-atomic-context-MC-port.patch new file mode 100644 index 0000000000..95d0fb6fbe --- /dev/null +++ b/target/linux/layerscape/patches-5.4/701-net-0161-staging-fsl-dpaa2-mac-Request-atomic-context-MC-port.patch @@ -0,0 +1,28 @@ +From 001bad547937cdd667adee45b5c7ebe78a1de1d0 Mon Sep 17 00:00:00 2001 +From: Ioana Radulescu <ruxandra.radulescu@nxp.com> +Date: Fri, 22 Sep 2017 12:20:02 +0300 +Subject: [PATCH] staging: fsl-dpaa2/mac: Request atomic context MC portals + +The MAC driver may need to issue MC commands while in atomic +context (e.g. dpaa2_mac_get_stats can be called from a critical +section), so we need to use MC portals that don't sleep while +waiting for a command response to arrive. + +Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com> +--- + drivers/staging/fsl-dpaa2/mac/mac.c | 4 +++- + 1 file changed, 3 insertions(+), 1 deletion(-) + +--- a/drivers/staging/fsl-dpaa2/mac/mac.c ++++ b/drivers/staging/fsl-dpaa2/mac/mac.c +@@ -490,7 +490,9 @@ static int dpaa2_mac_probe(struct fsl_mc + + dev_set_drvdata(dev, priv); + +- err = fsl_mc_portal_allocate(mc_dev, 0, &mc_dev->mc_io); ++ /* We may need to issue MC commands while in atomic context */ ++ err = fsl_mc_portal_allocate(mc_dev, FSL_MC_IO_ATOMIC_CONTEXT_PORTAL, ++ &mc_dev->mc_io); + if (err || !mc_dev->mc_io) { + dev_err(dev, "fsl_mc_portal_allocate error: %d\n", err); + err = -ENODEV; |