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From: haohlliang@gmail.com
To: tglx@kernel.org
Cc: linusw@kernel.org, linux-gpio@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] gpio: dwapb: Add robust error handling in interrupt handler
Date: Sun, 05 Jul 2026 15:46:25 +0800	[thread overview]
Message-ID: <26c872506bd87b969a84c91d0a7dea9f@gmail.com> (raw)
In-Reply-To: <875x2vlpjx.ffs@fw13>

Hi tglx,

Thank you for the thorough review. You're absolutely right that my
previous approach was limited to handling the symptom at the crash
site without investigating the root cause.

After your explanation, I realized the real problem is that the GPIO
controller does not properly initialize its interrupt state, and stale
interrupt configuration can persist across warm reboots when
peripherals remain powered.

I'll send a v4 that masks all interrupts at hardware initialization
time via the init_hw() callback, which addresses the root cause
rather than the symptom.

Thanks,
Liang

  reply	other threads:[~2026-07-05  7:46 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-07-03 13:48 [PATCH] gpio: dwapb: Add robust error handling in interrupt handler Liang Hao
2026-07-03 21:21 ` Linus Walleij
2026-07-03 21:40   ` Thomas Gleixner
2026-07-05  7:46     ` haohlliang [this message]
2026-07-05  7:47     ` [PATCH v4] gpio: dwapb: Mask interrupts at hardware initialization Liang Hao
2026-07-05  9:34       ` Thomas Gleixner

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