This is a note to let you know that I've just added the patch titled
jsm: Fixed EEH recovery error
to the 3.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
jsm-fixed-eeh-recovery-error.patch
and it can be found in the queue-3.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 26aa38cafae0dbef3b2fe75ea487c83313c36d45 Mon Sep 17 00:00:00 2001
From: Lucas Kannebley Tavares <[email protected]>
Date: Mon, 9 Jan 2012 10:58:06 -0200
Subject: jsm: Fixed EEH recovery error
From: Lucas Kannebley Tavares <[email protected]>
commit 26aa38cafae0dbef3b2fe75ea487c83313c36d45 upstream.
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 <[email protected]>
Signed-off-by: Breno Leitao <[email protected]>
Acked-by: Thadeu Lima de Souza Cascardo <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/tty/serial/jsm/jsm_driver.c | 1 +
1 file changed, 1 insertion(+)
--- 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
struct jsm_board *brd = pci_get_drvdata(pdev);
pci_restore_state(pdev);
+ pci_save_state(pdev);
jsm_uart_port_init(brd);
}
Patches currently in stable-queue which might be from
[email protected] are
queue-3.2/jsm-fixed-eeh-recovery-error.patch
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