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29 lines
1.1 KiB
Diff
29 lines
1.1 KiB
Diff
From 001bad547937cdd667adee45b5c7ebe78a1de1d0 Mon Sep 17 00:00:00 2001
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From: Ioana Radulescu <ruxandra.radulescu@nxp.com>
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Date: Fri, 22 Sep 2017 12:20:02 +0300
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Subject: [PATCH] staging: fsl-dpaa2/mac: Request atomic context MC portals
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The MAC driver may need to issue MC commands while in atomic
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context (e.g. dpaa2_mac_get_stats can be called from a critical
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section), so we need to use MC portals that don't sleep while
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waiting for a command response to arrive.
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Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
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---
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drivers/staging/fsl-dpaa2/mac/mac.c | 4 +++-
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1 file changed, 3 insertions(+), 1 deletion(-)
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--- a/drivers/staging/fsl-dpaa2/mac/mac.c
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+++ b/drivers/staging/fsl-dpaa2/mac/mac.c
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@@ -490,7 +490,9 @@ static int dpaa2_mac_probe(struct fsl_mc
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dev_set_drvdata(dev, priv);
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- err = fsl_mc_portal_allocate(mc_dev, 0, &mc_dev->mc_io);
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+ /* We may need to issue MC commands while in atomic context */
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+ err = fsl_mc_portal_allocate(mc_dev, FSL_MC_IO_ATOMIC_CONTEXT_PORTAL,
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+ &mc_dev->mc_io);
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if (err || !mc_dev->mc_io) {
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dev_err(dev, "fsl_mc_portal_allocate error: %d\n", err);
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err = -ENODEV;
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