Re: [PATCH] PCI: uniphier: Take lock in INTX irq_{mask,unmask,ack} callbacks

From: Kunihiko Hayashi
Date: Thu Aug 19 2021 - 19:03:07 EST


Hi Bjorn,
Thank you for checking.

On 2021/08/19 20:29, Bjorn Helgaas wrote:
Possibly update subject to be more descriptive, along lines of:

Serialize INTx masking/unmasking

Okay, I'll apply it to the subject.

On Thu, Aug 19, 2021 at 07:56:06PM +0900, Kunihiko Hayashi wrote:
The same condition register PCI_RCV_INTX is used in irq_mask(),
irq_unmask() and irq_ack() callbacks. Accesses to register can occur at the
same time without lock.
This introduces a lock into the callbacks to prevent the issue.

Rewrap into a single paragraph or add blank line between paragraphs.

s/This introduces/Add/ to make this an imperative description of what
you want this patch to do. No need for "This" since the context is
obvious.

I see. I'll rewrite the message to convey it more directly.

Thank you,

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Best Regards
Kunihiko Hayashi