From owner-freebsd-bugs@freebsd.org Sat Jan 16 05:25:56 2021 Return-Path: Delivered-To: freebsd-bugs@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id A2D144D3DC7 for ; Sat, 16 Jan 2021 05:25:56 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.nyi.freebsd.org (unknown [127.0.1.3]) by mx1.freebsd.org (Postfix) with ESMTP id 4DHmjc3Rlkz4rfR for ; Sat, 16 Jan 2021 05:25:56 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id 67BD74D3AED; Sat, 16 Jan 2021 05:25:56 +0000 (UTC) Delivered-To: bugs@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 672E14D3AEC for ; Sat, 16 Jan 2021 05:25:56 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4DHmjc15bDz4rNr for ; Sat, 16 Jan 2021 05:25:56 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 16FCB1A84 for ; Sat, 16 Jan 2021 05:25:56 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 10G5PuWf029749 for ; Sat, 16 Jan 2021 05:25:56 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 10G5Pu2l029748 for bugs@FreeBSD.org; Sat, 16 Jan 2021 05:25:56 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 252735] Acer Aspire: mmc disk unusable on CURRENT (patch) Date: Sat, 16 Jan 2021 05:25:56 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: CURRENT X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: ashafer@badland.io X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 16 Jan 2021 05:25:56 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D252735 Bug ID: 252735 Summary: Acer Aspire: mmc disk unusable on CURRENT (patch) Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: ashafer@badland.io (I'm filing this bug to track a review I submitted in May 2020 that still hasn't gotten attention. Filing a bug to prevent the review from getting lo= st in space) Problem: I bought a cheap acer aspire (A114-32-P7E5) to hack freebsd on. The disk it comes with is some sort of low quality eMMC that freebsd doesn't like out of the box. I could boot from a usb drive, but couldn't use the mmc disk. I'm guessing that other cheap laptops have the same problem. The review I link fixes the problem. Solution: Patch at: https://reviews.freebsd.org/D24740 I've been running this (daily use) for ~9months with no problems. >From reading around online, it seems that some number of cards can not depe= nd on CMD13 to check for errors while switching to HS200. They generate BADCRC er= rors for a short bit before CMD13 succeeds. It's my understanding that CMD13 is = used after CMD6 to verify switching has completed, and if these BADCRC errors are obse= rved we should ignore them and retry CMD13. I've update mmc_switch_status to have an argument to ignore bad crc errors, which the caller sets if we are switching to HS200. This seemed to be the b= est place to do this. Suspend/resume still doesn't work, but please let me know if there's anythi= ng I can do to improve/commit this. I'd love to see this committed so that I can stop having to track CURRENT on this laptop. Thanks! --=20 You are receiving this mail because: You are the assignee for the bug.=