From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-Id: <20070427140513.133020917@de.ibm.com> References: <20070427140503.087958775@de.ibm.com> Date: Fri, 27 Apr 2007 16:05:09 +0200 From: Martin Schwidefsky Subject: [patch 06/38] cio: observe chpid valid flag Content-Disposition: inline; filename=104-cio-chpid-valid.diff Sender: linux-kernel-owner@vger.kernel.org List-Archive: List-Post: To: linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org Cc: Peter Oberparleiter , Martin Schwidefsky List-ID: From: Peter Oberparleiter Check validity flag of CHPID description data before continuing with channel-path initialization. Signed-off-by: Peter Oberparleiter Signed-off-by: Martin Schwidefsky --- drivers/s390/cio/chp.c | 4 ++++ 1 files changed, 4 insertions(+) Index: quilt-2.6/drivers/s390/cio/chp.c =================================================================== --- quilt-2.6.orig/drivers/s390/cio/chp.c 2007-04-27 16:04:53.000000000 +0200 +++ quilt-2.6/drivers/s390/cio/chp.c 2007-04-27 16:04:53.000000000 +0200 @@ -339,6 +339,10 @@ ret = chsc_determine_channel_path_description(chpid, &chp->desc); if (ret) goto out_free; + if ((chp->desc.flags & 0x80) == 0) { + ret = -ENODEV; + goto out_free; + } /* Get channel-measurement characteristics. */ if (css_characteristics_avail && css_chsc_characteristics.scmc && css_chsc_characteristics.secm) { -- blue skies, Martin. "Reality continues to ruin my life." - Calvin.