From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lucas Kannebley Tavares Subject: [PATCH] jsm: Fixed EEH recovery error Date: Mon, 9 Jan 2012 10:58:06 -0200 Message-ID: <1326113886-10830-1-git-send-email-lucaskt@linux.vnet.ibm.com> Return-path: Received: from e24smtp03.br.ibm.com ([32.104.18.24]:34163 "EHLO e24smtp03.br.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753964Ab2AIM6Z (ORCPT ); Mon, 9 Jan 2012 07:58:25 -0500 Received: from /spool/local by e24smtp03.br.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 9 Jan 2012 10:58:21 -0200 Sender: linux-serial-owner@vger.kernel.org List-Id: linux-serial@vger.kernel.org To: Greg KH Cc: Thadeu Lima de Souza Cascardo , Breno Leitao , Alan Cox , linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org, Breno Leitao There was an error on the jsm driver that would cause it to be unable to recover after a second error is detected. At the first error, the device recovers properly: [72521.485691] EEH: Detected PCI bus error on device 0003:02:00.0 [72521.485695] EEH: This PCI device has failed 1 times in the last hour: ... [72532.035693] ttyn3 at MMIO 0x0 (irq = 49) is a jsm [72532.105689] jsm: Port 3 added However, at the second error, it cascades until EEH disables the device: [72631.229549] Call Trace: ... [72641.725687] jsm: Port 3 added [72641.725695] EEH: Detected PCI bus error on device 0003:02:00.0 [72641.725698] EEH: This PCI device has failed 3 times in the last hour: It was caused because the PCI state was not being saved after the first restore. Therefore, at the second recovery the PCI state would not be restored. Signed-off-by: Lucas Kannebley Tavares Signed-off-by: Breno Leitao Acked-by: Thadeu Lima de Souza Cascardo --- drivers/tty/serial/jsm/jsm_driver.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/drivers/tty/serial/jsm/jsm_driver.c b/drivers/tty/serial/jsm/jsm_driver.c index 7c867a0..7545fe1 100644 --- a/drivers/tty/serial/jsm/jsm_driver.c +++ b/drivers/tty/serial/jsm/jsm_driver.c @@ -251,6 +251,7 @@ static void jsm_io_resume(struct pci_dev *pdev) struct jsm_board *brd = pci_get_drvdata(pdev); pci_restore_state(pdev); + pci_save_state(pdev); jsm_uart_port_init(brd); } -- 1.7.4.4