From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 04A29149C6F for ; Tue, 26 Aug 2025 03:34:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756179271; cv=none; b=W4FrKmwTZY+/7BRU88ZYl60ySma7nbRdaCkUuVBMDq2tbATvksenj4EroyIxU3fMJXd3wWC0VKNpFKxfwNwfwXq5JrpCurtcpdlV6i9e1CoN91SrsPOa0qpsYIo0RD3kxPeVsojXZQUSlaDJpFhQu4V+vmXqiDETkb7+6qPM9rw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756179271; c=relaxed/simple; bh=RIcbrwOkYgUtlMVPElt+mR/keBDHqYlT+Eej0zGoamg=; h=From:To:Subject:Date:Message-ID:Content-Type:MIME-Version; b=SA/llSTkYrphkBvNAm3LI6NB+b/NsMsVijh8w718IFI0O4Hsy5Jfak8D3ySZ1qhBs9BWD/8A3xaHMbw1WA5Xy6oOOJYqZ57jOP/G2Sd8RVk0XJU8cVvbWOnVptBD9DwvIqZfwUbIwKLHHgZo0J2MY+OpgJzdgIsNZrFywkYFYOI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=CuS9hndb; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="CuS9hndb" Received: by smtp.kernel.org (Postfix) with ESMTPS id 7E3BCC116B1 for ; Tue, 26 Aug 2025 03:34:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1756179270; bh=RIcbrwOkYgUtlMVPElt+mR/keBDHqYlT+Eej0zGoamg=; h=From:To:Subject:Date:From; b=CuS9hndbl8Io5ZXb5HXcXsifEiDfsMlY73Dy7WynzFmDUccq3JwlVtq4BOw41BKIv Na4G+2o8OkTM43jSjFP1MNwcFRnJTWebGCUyakzIKG6oMlM1gMzD+OL/zzzZt5Tzs8 eQDvTnFrOuy3QTKicVm6S4+0hQEfB4lI+tcrqCNHBNmx/YsM8cls/Y4PwsCOkwwRD8 dvQbG/pLuTFss9Z3jpr4hGPXQ1dyL1JufjfAd5LRfQ3cZxEq/DfiukIW0xPSNPJKk7 gY1gFVbW4Od1UjaTcKa4uPym/DDu5uT72MmFqPXgbdOotVWpbeaBDDe9Pyg5C0Du9B eDK6cyYj1uk9Q== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 615B1C4160E; Tue, 26 Aug 2025 03:34:30 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-usb@vger.kernel.org Subject: [Bug 220491] New: usb_storage connected SD card disconnects/reconnects on resume from suspend Date: Tue, 26 Aug 2025 03:34:30 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: AssignedTo drivers_usb@kernel-bugs.kernel.org X-Bugzilla-Product: Drivers X-Bugzilla-Component: USB X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: paula@alumni.cse.ucsc.edu X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: drivers_usb@kernel-bugs.kernel.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 cf_regression attachments.created Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 https://bugzilla.kernel.org/show_bug.cgi?id=3D220491 Bug ID: 220491 Summary: usb_storage connected SD card disconnects/reconnects on resume from suspend Product: Drivers Version: 2.5 Hardware: Intel OS: Linux Status: NEW Severity: normal Priority: P3 Component: USB Assignee: drivers_usb@kernel-bugs.kernel.org Reporter: paula@alumni.cse.ucsc.edu Regression: No Created attachment 308549 --> https://bugzilla.kernel.org/attachment.cgi?id=3D308549&action=3Dedit This is machine specific to a Samsung Ativ9 laptop, Intel Broadwell platform I've had this Samsung laptop since 2015, 2560x1600 display, Intel Broadwell platform, battery still has > 5 hour useful life. This is one of two machine specific suspend/resume related problems that I would really like to patch = if possible. If the laptop is suspended for a while, the mounted usb connected= SD card is unmounted on resume. This results from the associated usb_storage device disconnecting and reconnecting. I've looked at the so-called usb_per= sist feature and the problem is "hard" enough that the persist feature won't pas= te over it. I've attached a dmesg log with xhci_hcd dynamic debug enabled. The debug messages are opaque enough that I thought I'd post here on the hope t= hat someone more experienced would weigh in. I am willing to do work but it wou= ld be more efficient if I didn't have to discover too much arcana. For instanc= e, the xhci_hcd dynamic debug information doesn't shed much immediate light on= why the usb disconnect is happening. I mean there's a lot of xhci logging leadi= ng up to the disconnect but it's not immediately clear why the disconnect happ= ens exactly when it happens. Of course, any help would be greatly appreciated. --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.=