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author | Thomas Gleixner <tglx@linutronix.de> | 2010-09-27 12:44:25 +0000 |
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committer | Thomas Gleixner <tglx@linutronix.de> | 2010-10-04 12:27:16 +0200 |
commit | ff7dcd44dd446db2c3e13bdedf2d52b8e0127f16 (patch) | |
tree | ca03e829ea08aa536124a7777d99233dbbd89984 /kernel/irq/spurious.c | |
parent | 3bb9808e99bcc36eecb8e082bf70efb2a0bcdcb7 (diff) | |
download | op-kernel-dev-ff7dcd44dd446db2c3e13bdedf2d52b8e0127f16.zip op-kernel-dev-ff7dcd44dd446db2c3e13bdedf2d52b8e0127f16.tar.gz |
genirq: Create irq_data
Low level chip functions need access to irq_desc->handler_data,
irq_desc->chip_data and irq_desc->msi_desc. We hand down the irq
number to the low level functions, so they need to lookup irq_desc.
With sparse irq this means a radix tree lookup.
We could hand down irq_desc itself, but low level chip functions have
no need to fiddle with it directly and we want to restrict access to
irq_desc further.
Preparatory patch for new chip functions.
Note, that the ugly anon union/struct is there to avoid a full tree
wide clean up for now. This is not going to last 3 years like __do_IRQ()
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <20100927121841.645542300@linutronix.de>
Reviewed-by: H. Peter Anvin <hpa@zytor.com>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/irq/spurious.c')
0 files changed, 0 insertions, 0 deletions