From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joe Perches Subject: Re: [PATCH 5/5] staging: hv: Gracefully handle SCSI resets - RESEND Date: Wed, 01 Sep 2010 09:28:53 -0700 Message-ID: <1283358535.1797.174.camel@Joe-Laptop> References: <4C7D4848.6090409@sailtheuniverse.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <4C7D4848.6090409@sailtheuniverse.com> Sender: linux-kernel-owner@vger.kernel.org To: Hank Janssen Cc: gregkh@suse.de, linux-kernel@vger.kernel.org, virtualization@lists.osdl.org, devel@driverdev.osuosl.org, haiyangz@microsoft.com List-Id: virtualization@lists.linuxfoundation.org On Tue, 2010-08-31 at 11:22 -0700, Hank Janssen wrote: > If we get a SCSI host bus reset we now gracefully handle it, and we > take the device offline. This before sometimes caused hangs. > --- > drivers/staging/hv/storvsc.c | 36 +++++++++++++++++++++++++++++++++++- [] > + /* > + * Wait for traffic in transit to complete > + */ > + while (atomic_read(&storDevice->NumOutstandingRequests)) > + udelay(1000); > + Is it useful to have a maximum check or timeout? Maybe use usleep_range?