linux-kernel - [PATCH] powerpc/fsl: Use irq_data_get_irq_handler

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Date:	Wed, 1 Jun 2011 10:44:07 +0200 (CEST)
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Linux/PPC Development <linuxppc-dev@...ts.ozlabs.org>
cc:	Thomas Gleixner <tglx@...utronix.de>,
	Linux Kernel Development <linux-kernel@...r.kernel.org>
Subject: [PATCH] powerpc/fsl: Use irq_data_get_irq_handler_data() in chain
 handler

If you already have a pointer to a struct irq_data , it's more efficient
to use irq_data_get_irq_handler_data().
irq_get_handler_data() has to look up the struct irq_desc pointer again,
which was already passed to the chain handler.

Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org>
---
Completely untested, not even compile-tested.
If this is correct, there are probably more of these?

 arch/powerpc/sysdev/fsl_msi.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/powerpc/sysdev/fsl_msi.c b/arch/powerpc/sysdev/fsl_msi.c
index 92e7833..9b92c82 100644
--- a/arch/powerpc/sysdev/fsl_msi.c
+++ b/arch/powerpc/sysdev/fsl_msi.c
@@ -193,7 +193,7 @@ static void fsl_msi_cascade(unsigned int irq, struct irq_desc *desc)
 	u32 have_shift = 0;
 	struct fsl_msi_cascade_data *cascade_data;
 
-	cascade_data = irq_get_handler_data(irq);
+	cascade_data = irq_data_get_irq_handler_data(idata);
 	msi_data = cascade_data->msi_data;
 
 	raw_spin_lock(&desc->lock);
-- 
1.7.0.4

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds
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