From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ingo Molnar Subject: Re: [2/6] 2.6.21-rc2: known regressions Date: Thu, 8 Mar 2007 20:25:54 +0100 Message-ID: <20070308192554.GA2999@elte.hu> References: <20070305015034.GG3441@stusta.de> <20070308123143.GF5149@mellanox.co.il> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: Sender: owner-linux-input@atrey.karlin.mff.cuni.cz List-Help: List-Owner: List-Post: List-Unsubscribe: To: Linus Torvalds Cc: "Michael S. Tsirkin" , Adrian Bunk , Andrew Morton , Linux Kernel Mailing List , Jens Axboe , Jeff Chua , pavel@suse.cz, linux-pm@lists.osdl.org, lenb@kernel.org, linux-acpi@vger.kernel.org, luming.yu@intel.com, Arkadiusz Miskiewicz , Konstantin Karasyov , Greg KH , linux-usb-devel@lists.sourceforge.net, Thomas Meyer , Meelis Roos , Alexey Starikovskiy , Janosch Machowinski , vladimir.p.lebedev@intel.com, Ash Milsted , dmitry.torokhov@gmail.com, linux-input@atrey.karlin.mff.cuni.cz, "Eric W. Biederman" List-Id: linux-input@vger.kernel.org * Linus Torvalds wrote: > > 2. First disk access after resume takes a couple of minutes > > (seemed instant with 2.6.20) during this time no new messages > > show on console > > Yeah, there is some problem with SATA resume. It would be beautiful if > the people who actually see this could narrow it down with bisection. > "It works for me" is clearly the case for many people, but not all. Thomas found a new twist to this today: applying the patch below (which turns on ATA_DEBUG) made the SATA problem go away on his laptop. Michael, could you try this patch, does it change the behavior of your laptop in any way? Ingo --- include/linux/libata.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) Index: linux/include/linux/libata.h =================================================================== --- linux.orig/include/linux/libata.h +++ linux/include/linux/libata.h @@ -51,7 +51,7 @@ * compile-time options: to be removed as soon as all the drivers are * converted to the new debugging mechanism */ -#undef ATA_DEBUG /* debugging output */ +#define ATA_DEBUG 1 /* debugging output */ #undef ATA_VERBOSE_DEBUG /* yet more debugging output */ #undef ATA_IRQ_TRAP /* define to ack screaming irqs */ #undef ATA_NDEBUG /* define to disable quick runtime checks */