linux-kernel - [PATCH 1/2] powerpc: flipper-pic: Don't match all IRQ domains

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Message-Id: <20180510215919.27808-2-j.neuschaefer@gmx.net>
Date:   Thu, 10 May 2018 23:59:18 +0200
From:   Jonathan Neuschäfer <j.neuschaefer@....net>
To:     linuxppc-dev@...ts.ozlabs.org
Cc:     linux-kernel@...r.kernel.org,
        Segher Boessenkool <segher@...nel.crashing.org>,
        Joel Stanley <joel@....id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Mathieu Malaterre <malat@...ian.org>,
        Jonathan Neuschäfer <j.neuschaefer@....net>
Subject: [PATCH 1/2] powerpc: flipper-pic: Don't match all IRQ domains

On the Wii, there is a secondary IRQ controller (hlwd-pic), so
flipper-pic's match operation should not be hardcoded to return 1.
In fact, the default matching logic is sufficient, and we can completely
omit flipper_pic_match.

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@....net>
---

Note: This shouldn't break Linux on the GameCube, but I've only tested
on the Wii. Some confirmation that I didn't break interrupt handling on
the GC would be nice. (If someone still runs mainline on the GC.)
---
 arch/powerpc/platforms/embedded6xx/flipper-pic.c | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/arch/powerpc/platforms/embedded6xx/flipper-pic.c b/arch/powerpc/platforms/embedded6xx/flipper-pic.c
index 7206f3f573d4..db0be007fd06 100644
--- a/arch/powerpc/platforms/embedded6xx/flipper-pic.c
+++ b/arch/powerpc/platforms/embedded6xx/flipper-pic.c
@@ -108,16 +108,8 @@ static int flipper_pic_map(struct irq_domain *h, unsigned int virq,
 	return 0;
 }
 
-static int flipper_pic_match(struct irq_domain *h, struct device_node *np,
-			     enum irq_domain_bus_token bus_token)
-{
-	return 1;
-}
-
-
 static const struct irq_domain_ops flipper_irq_domain_ops = {
 	.map = flipper_pic_map,
-	.match = flipper_pic_match,
 };
 
 /*
-- 
2.17.0