From: sashiko-bot@kernel.org
To: "Stefano Munari" <stefanomunari.sm@gmail.com>
Cc: linux-usb@vger.kernel.org
Subject: Re: [PATCH net] net: usb: lan78xx: fix error handling in lan78xx_open()
Date: Fri, 16 Oct 2026 00:21:36 +0000 [thread overview]
Message-ID: <sashiko-outbox-173511@kernel.org> (raw)
In-Reply-To: <20261016000521.92868-1-stefanomunari.sm@gmail.com>
> A failed interrupt URB submission leaves NAPI enabled and EVENT_DEV_OPEN
> set. A subsequent open enables NAPI again, triggering BUG_ON() in
> napi_enable().
>
> Clear EVENT_DEV_OPEN and disable NAPI on the submission error path.
>
> Reproduced using failslab on a Raspberry Pi 3 Model B+ (LAN7515).
> With the fix, the injected allocation failure returns -ENOMEM and a
> subsequent open succeeds. Verified connectivity with ping and SSH.
>
> Fixes: e110bc825897 ("net: usb: lan78xx: Convert to PHYLINK for improved PHY and MAC management")
> Signed-off-by: Stefano Munari <stefanomunari.sm@gmail.com>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20261016000521.92868-1-stefanomunari.sm@gmail.com?part=1
prev parent reply other threads:[~2026-10-16 0:21 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-16 0:05 [PATCH net] net: usb: lan78xx: fix error handling in lan78xx_open() Stefano Munari
2026-10-16 0:21 ` sashiko-bot [this message]
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