42 lines
1.4 KiB
Diff
42 lines
1.4 KiB
Diff
From: Sven-Thorsten Dietrich <sdietrich@novell.com>
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Date: Fri, 3 Jul 2009 08:30:35 -0500
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Subject: infiniband: Mellanox IB driver patch use _nort() primitives
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4-rc6-rt1/patches-4.4-rc6-rt1.tar.xz
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Fixes in_atomic stack-dump, when Mellanox module is loaded into the RT
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Kernel.
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Michael S. Tsirkin <mst@dev.mellanox.co.il> sayeth:
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"Basically, if you just make spin_lock_irqsave (and spin_lock_irq) not disable
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interrupts for non-raw spinlocks, I think all of infiniband will be fine without
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changes."
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Signed-off-by: Sven-Thorsten Dietrich <sven@thebigcorporation.com>
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Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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---
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drivers/infiniband/ulp/ipoib/ipoib_multicast.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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--- a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
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+++ b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
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@@ -847,7 +847,7 @@ void ipoib_mcast_restart_task(struct wor
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ipoib_dbg_mcast(priv, "restarting multicast task\n");
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- local_irq_save(flags);
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+ local_irq_save_nort(flags);
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netif_addr_lock(dev);
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spin_lock(&priv->lock);
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@@ -929,7 +929,7 @@ void ipoib_mcast_restart_task(struct wor
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spin_unlock(&priv->lock);
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netif_addr_unlock(dev);
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- local_irq_restore(flags);
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+ local_irq_restore_nort(flags);
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/*
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* make sure the in-flight joins have finished before we attempt
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