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X-CSE-ConnectionGUID: d2xi+eVNR5uibnpRipr48w== X-CSE-MsgGUID: /9OZruZpQienE6DPmMu4Ww== X-IronPort-AV: E=McAfee;i="6800,10657,11891"; a="76119094" X-IronPort-AV: E=Sophos;i="6.25,252,1779174000"; d="scan'208";a="76119094" Received: from fmviesa007.fm.intel.com ([10.60.135.147]) by fmvoesa110.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Aug 2026 02:21:51 -0700 X-CSE-ConnectionGUID: KCOVgDKHS0myaom0zw//0A== X-CSE-MsgGUID: 6Dw3w3PAR1OHTJdgjqnO/w== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,252,1779174000"; d="scan'208";a="265505862" Received: from slindbla-desk.ger.corp.intel.com (HELO [10.245.244.13]) ([10.245.244.13]) by fmviesa007-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Aug 2026 02:21:49 -0700 Message-ID: <81ddd491-1ec3-4a0c-90b3-6a286ff1a908@linux.intel.com> Date: Mon, 31 Aug 2026 12:21:46 +0300 Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] usb: xhci: fix maximum event ring segments calculation To: Thorsten Leemhuis , Pierre-David Belanger , Shixiong Ou Cc: Shixiong Ou , Mathias Nyman , Greg Kroah-Hartman , Niklas Neronin , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, regressions@lists.linux.dev References: <20260828105926.930033-1-oushixiong1025@163.com> <20260830031233.1810986-2-pierredavidbelanger@gmail.com> <64a7ce30-b346-4e94-974f-f30893d66829@leemhuis.info> Content-Language: en-US From: Mathias Nyman In-Reply-To: <64a7ce30-b346-4e94-974f-f30893d66829@leemhuis.info> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 8/31/26 09:55, Thorsten Leemhuis wrote: > On 8/30/26 05:12, Pierre-David Belanger wrote: > >> The failure on 08dbfad3f504: >> >> xhci_hcd 0000:00:04.0: xHCI Host Controller >> xhci_hcd 0000:00:04.0: new USB bus registered, assigned bus number 1 >> xhci_hcd 0000:00:04.0: Failed to allocate interrupter erst >> xhci_hcd 0000:00:04.0: can't setup: -12 >> xhci_hcd 0000:00:04.0: USB bus 1 deregistered >> xhci_hcd 0000:00:04.0: init 0000:00:04.0 fail, -12 >> xhci_hcd 0000:00:04.0: probe with driver xhci_hcd failed with error -12 > FWIW, not my area of expertise, but to me it looks like there were two > similar fixes submitted earlier to address this and "usb: xhci: Fix > HCS_ERST_MAX conversion" ( > https://lore.kernel.org/all/20260828105926.930033-1-oushixiong1025@163.com/ > ) seems to be heading towards mainline already according to Mathias. > Sadly this missed -rc1, wonder why it wasn't submitted for it to prevent > more people from running into this, but whatever, that's ship has sailed. Looks like at least QEMU and Mediatek users were hit by this issue. Note that this is a v7.3-rc1 regression which was found during merge window for v7.3-rc1. v7.3-rc1 came out a few hours ago. I can't resolve it much earlier than this. Thanks Mathias