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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 <>
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;


Geert Uytterhoeven -- There's lots of Linux beyond ia32 --

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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