RE: [PATCH 38/40] Staging: hv: storvsc: Fixup srb_status for INQUIRY and MODE_SENSE
From: KY Srinivasan <kys@microsoft.com>
Date: 2011-06-30 19:59:32
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-----Original Message----- From: Christoph Hellwig [mailto:hch@infradead.org] Sent: Thursday, June 30, 2011 3:48 PM To: KY Srinivasan Cc: gregkh@suse.de; linux-kernel@vger.kernel.org; devel@linuxdriverproject.org; virtualization@lists.osdl.org; Haiyang Zhang; Abhishek Kane (Mindtree Consulting PVT LTD); Hank Janssen Subject: Re: [PATCH 38/40] Staging: hv: storvsc: Fixup srb_status for INQUIRY and MODE_SENSE On Wed, Jun 29, 2011 at 07:39:35AM -0700, K. Y. Srinivasan wrote:quoted
The current handler on the Windows Host does not correctly handle INQUIRY and MODE_SENSE commands with some options. Fixup srb_status in these cases since the failure is not fatal.quoted
+ /* + * The current SCSI handling on the host side does + * not correctly handle: + * INQUIRY command with page code parameter set to 0x80 + * MODE_SENSE command with cmd[2] == 0x1c + * + * Setup srb status so this won't be fatal. + */ + + if ((stor_pkt->vm_srb.cdb[0] == INQUIRY) || + (stor_pkt->vm_srb.cdb[0] == MODE_SENSE)) + vstor_packet->vm_srb.srb_status = 0;Given that the srb_status is only used for debug printks I don't quite see the point. If people explicitly turn on debugging they should see that these commands fail, shouldn't they?
The reason I did this was so that I could key off on real failures indicated by srb_status == 0x4 to off-line the device. Regards, K. Y