Re: [PATCH 0/3] Cleanup MAY_HAVE_SPARSE_IRQ

On Mon, Sep 27, 2021 at 4:11 PM Kefeng Wang [off-list ref] wrote:

Most ARCHs support SPARSE_IRQ, and MAY_HAVE_SPARSE_IRQ is useless, and
only sh and csky select it, but the could use SPARSE_IRQ too, let's
kill MAY_HAVE_SPARSE_IRQ, also cleanup the kernel/irq/Kconfig a little.

Can you elaborate the reason on why we need to kill MAY_HAVE_SPARSE_IRQ?
What are the benefits after the patch? (As you know we couldn't drop
"!SPARSE_IRQ".)

Kefeng Wang (3):
  sh: Cleanup about SPARSE_IRQ
  csky: Use SPARSE_IRQ
  genirq: Cleanup Kconfig

 arch/csky/Kconfig         |  2 +-
 arch/sh/Kconfig           |  1 -
 arch/sh/include/asm/irq.h |  9 -------
 kernel/irq/Kconfig        | 50 ++++++++++++++++-----------------------
 4 files changed, 21 insertions(+), 41 deletions(-)

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2.26.2

-- 
Best Regards
 Guo Ren

ML: https://lore.kernel.org/linux-csky/