This is a note to let you know that I've just added the patch titled
dmaengine: ipu: remove bogus NO_IRQ reference
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
dmaengine-ipu-remove-bogus-no_irq-reference.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 86c7e6836479c4045a9a81ed5ea76c51d719f9c1 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@xxxxxxxx>
Date: Sat, 3 Sep 2016 01:22:02 +0200
Subject: dmaengine: ipu: remove bogus NO_IRQ reference
From: Arnd Bergmann <arnd@xxxxxxxx>
commit 86c7e6836479c4045a9a81ed5ea76c51d719f9c1 upstream.
A workaround for a warning introduced a use of the NO_IRQ
macro that should have been gone for a long time.
It is clear from the code that the value cannot actually
be used, but apparently there was a configuration at
some point that caused a warning, so instead of just
reverting that patch, this rearranges the code in a way that
the warning cannot reappear.
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Fixes: 6ef41cf6f721 ("dmaengine :ipu: change ipu_irq_handler() to remove compile warning")
Signed-off-by: Vinod Koul <vinod.koul@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/dma/ipu/ipu_irq.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
--- a/drivers/dma/ipu/ipu_irq.c
+++ b/drivers/dma/ipu/ipu_irq.c
@@ -286,22 +286,21 @@ static void ipu_irq_handler(struct irq_d
raw_spin_unlock(&bank_lock);
while ((line = ffs(status))) {
struct ipu_irq_map *map;
- unsigned int irq = NO_IRQ;
+ unsigned int irq;
line--;
status &= ~(1UL << line);
raw_spin_lock(&bank_lock);
map = src2map(32 * i + line);
- if (map)
- irq = map->irq;
- raw_spin_unlock(&bank_lock);
-
if (!map) {
+ raw_spin_unlock(&bank_lock);
pr_err("IPU: Interrupt on unmapped source %u bank %d\n",
line, i);
continue;
}
+ irq = map->irq;
+ raw_spin_unlock(&bank_lock);
generic_handle_irq(irq);
}
}
Patches currently in stable-queue which might be from arnd@xxxxxxxx are
queue-4.4/dmaengine-ipu-remove-bogus-no_irq-reference.patch
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