Messages in this thread Patch in this message | | | Date | Thu, 14 Jun 2007 11:31:19 -0400 | From | Neil Horman <> | Subject | [PATCH] cciss: force ignore of responses to unsent scsi commands after kexec reboot |
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Hey - cciss hardware currently can continue to send responses to scsi commands after the host system has undergone a kexec reboot. The way the drier is currently written, reception of these commands results in a BUG halt, since it can't match the response to any issued command since the boot. This patch corrects that by using the kexec reset_devices command line paramter to force ignore any commands that it cant correlate.
Regards Neil
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
cciss.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index 5acc6c4..ec1c1d2 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -2131,6 +2131,14 @@ static int add_sendcmd_reject(__u8 cmd, int ctlr, unsigned long complete) ctlr, complete); /* not much we can do. */ #ifdef CONFIG_CISS_SCSI_TAPE + /* We might get notification of completion of commands + * which we never issued in this kernel if this boot is + * taking place after previous kernel's crash. Simply + * ignore the commands in this case. + */ + if (reset_devices) + return 0; + return 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/
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