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Tue, 04 Aug 2026 14:03:20 -0700 (PDT) Date: Tue, 4 Aug 2026 22:03:19 +0100 From: Chris Bainbridge To: "Korenblit, Miriam Rachel" Cc: "Grumbach, Emmanuel" , "Berg, Johannes" , "linux-wireless@vger.kernel.org" , "regressions@lists.linux.dev" Subject: Re: [REGRESSION] iwlwifi IO_PAGE_FAULT and Master Disable Timed Out Message-ID: References: Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Sun, Aug 02, 2026 at 07:24:04AM +0000, Korenblit, Miriam Rachel wrote: > > > > -----Original Message----- > > From: Chris Bainbridge > > Sent: Friday, July 31, 2026 8:05 PM > > To: Grumbach, Emmanuel > > Cc: Berg, Johannes ; Korenblit, Miriam Rachel > > ; linux-wireless@vger.kernel.org; > > regressions@lists.linux.dev > > Subject: [REGRESSION] iwlwifi IO_PAGE_FAULT and Master Disable Timed Out > > > > Hi, > > > > 0eaa1f245ac0 ("wifi: iwlwifi: mvm: don't support the reset handshake for old > > firmwares") introduced an intermittent boot regression on my laptop: > > > > [ 15.974991] iwlwifi 0000:01:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT > > domain=0x000a address=0xbe9f5000 flags=0x0000] > > [ 15.976184] iwlwifi 0000:01:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT > > domain=0x000a address=0xbe9f5400 flags=0x0000] > > [ 15.978501] iwlwifi 0000:01:00.0: Master Disable Timed Out, 100 usec > > > > The commit only contains: > > > > + /* Those firmware versions claim to support the fw_reset_handshake > > + * but they are buggy. > > + */ > > + if (IWL_UCODE_MAJOR(mvm->fw->ucode_ver) <= 77) > > + trans->conf.fw_reset_handshake = false; > > > > The if condition is evaluating true on my laptop despite using firmware ty-a0-gf- > > a0-89.ucode. So I suspect this is not the correct way to check the firmware > > version? > > Yes, seems like you are right. > Thanks for the report! > > I am attaching a fix candidate, I'd appreciate if you could test it. Thanks, the fix is working fine. Reported-and-tested-by: Chris Bainbridge