Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933810AbaGVWuE (ORCPT ); Tue, 22 Jul 2014 18:50:04 -0400 Received: from youngberry.canonical.com ([91.189.89.112]:44464 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932543AbaGVWXH (ORCPT ); Tue, 22 Jul 2014 18:23:07 -0400 From: Kamal Mostafa To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, kernel-team@lists.ubuntu.com Cc: Alan Stern , Greg Kroah-Hartman , Kamal Mostafa Subject: [PATCH 3.8 086/116] USB: EHCI: avoid BIOS handover on the HASEE E200 Date: Tue, 22 Jul 2014 15:21:37 -0700 Message-Id: <1406067727-19683-87-git-send-email-kamal@canonical.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1406067727-19683-1-git-send-email-kamal@canonical.com> References: <1406067727-19683-1-git-send-email-kamal@canonical.com> X-Extended-Stable: 3.8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.8.13.27 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Alan Stern commit b0a50e92bda3c4aeb8017d4e6c6e92146ebd5c9b upstream. Leandro Liptak reports that his HASEE E200 computer hangs when we ask the BIOS to hand over control of the EHCI host controller. This definitely sounds like a bug in the BIOS, but at the moment there is no way to fix it. This patch works around the problem by avoiding the handoff whenever the motherboard and BIOS version match those of Leandro's computer. Signed-off-by: Alan Stern Reported-by: Leandro Liptak Tested-by: Leandro Liptak Signed-off-by: Greg Kroah-Hartman Signed-off-by: Kamal Mostafa --- drivers/usb/host/pci-quirks.c | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-) diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c index 4c338ec..9cfe3af 100644 --- a/drivers/usb/host/pci-quirks.c +++ b/drivers/usb/host/pci-quirks.c @@ -555,6 +555,14 @@ static const struct dmi_system_id ehci_dmi_nohandoff_table[] = { DMI_MATCH(DMI_BIOS_VERSION, "Lucid-"), }, }, + { + /* HASEE E200 */ + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "HASEE"), + DMI_MATCH(DMI_BOARD_NAME, "E210"), + DMI_MATCH(DMI_BIOS_VERSION, "6.00"), + }, + }, { } }; @@ -564,9 +572,14 @@ static void ehci_bios_handoff(struct pci_dev *pdev, { int try_handoff = 1, tried_handoff = 0; - /* The Pegatron Lucid tablet sporadically waits for 98 seconds trying - * the handoff on its unused controller. Skip it. */ - if (pdev->vendor == 0x8086 && pdev->device == 0x283a) { + /* + * The Pegatron Lucid tablet sporadically waits for 98 seconds trying + * the handoff on its unused controller. Skip it. + * + * The HASEE E200 hangs when the semaphore is set (bugzilla #77021). + */ + if (pdev->vendor == 0x8086 && (pdev->device == 0x283a || + pdev->device == 0x27cc)) { if (dmi_check_system(ehci_dmi_nohandoff_table)) try_handoff = 0; } -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/