[merged] dma-debug-avoid-spinlock-recursion-when-disabling-dma-debug.patch removed from -mm tree

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The patch titled
     Subject: dma-debug: avoid spinlock recursion when disabling dma-debug
has been removed from the -mm tree.  Its filename was
     dma-debug-avoid-spinlock-recursion-when-disabling-dma-debug.patch

This patch was dropped because it was merged into mainline or a subsystem tree

------------------------------------------------------
From:  Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Subject: dma-debug: avoid spinlock recursion when disabling dma-debug

With netconsole (at least) the pr_err("...  disablingn") call can recurse
back into the dma-debug code, where it'll try to grab free_entries_lock
again.  Avoid the problem by doing the printk after dropping the lock.

Link: http://lkml.kernel.org/r/1463678421-18683-1-git-send-email-ville.syrjala@xxxxxxxxxxxxxxx
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 lib/dma-debug.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -puN lib/dma-debug.c~dma-debug-avoid-spinlock-recursion-when-disabling-dma-debug lib/dma-debug.c
--- a/lib/dma-debug.c~dma-debug-avoid-spinlock-recursion-when-disabling-dma-debug
+++ a/lib/dma-debug.c
@@ -657,9 +657,9 @@ static struct dma_debug_entry *dma_entry
 	spin_lock_irqsave(&free_entries_lock, flags);
 
 	if (list_empty(&free_entries)) {
-		pr_err("DMA-API: debugging out of memory - disabling\n");
 		global_disable = true;
 		spin_unlock_irqrestore(&free_entries_lock, flags);
+		pr_err("DMA-API: debugging out of memory - disabling\n");
 		return NULL;
 	}
 
_

Patches currently in -mm which might be from ville.syrjala@xxxxxxxxxxxxxxx are


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