Andrew Morton wrote: > On Wed, 18 Feb 2009 18:38:04 +0000 > James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx> wrote: > >> On Wed, 2009-02-18 at 10:04 -0800, Andrew Morton wrote: >>> On Wed, 18 Feb 2009 04:27:28 -0800 (PST) david@xxxxxxx wrote: >>> >>>> On Wed, 18 Feb 2009, Matthew Wilcox wrote: >>>> >>>>> On Tue, Feb 17, 2009 at 08:40:09PM -0800, Yinghai Lu wrote: >>>>>> Impact: workaround BIOS that doesn't enable that bit >>>>>> >>>>>> David reported that LSI sas doesn't work with MSI. >>>>>> it turns out that BIOS doesn't enable HT MSI >>>>>> 8132 does support HT MSI. >>>>>> add quirk to enable it >>>>>> >>>>>> Reported-by: David Lang <david@xxxxxxx> >>>>>> Signed-off-by: Yinghai Lu <yinghai@xxxxxxxxxx> >>>>> Reviewed-by: Matthew Wilcox <willy@xxxxxxxxxxxxxxx> >>>>> >>>>> Jesse, I think this should go into Linus' tree sooner rather than later. >>>> please forward to -stable as well. this is a regression since the card >>>> works with older kernels. >>>> >>> Which kernel version introduced the regression? >> Technically, it's not a regression. The MSI problem has always been >> there, it was just exposed when the SAS card switched to using MSI by >> default. It's fixed by the bridge quirk ... of course it's unclear how >> many more bridges with problems there are. >> >>> Do we not need mpt-fix-enable-lsi-sas-to-use-msi-as-default.patch as >>> well, to fix this regression? >> No ... it's a separate issue. MSI was enabled for fusion SAS in 2.6.26; >> the problem msi patch which the above corrects actually has the effect >> of disabling MSI for fusion and went into 2.6.29-rc2, which isn't a >> kernel that's been tested here. > > <scratches head> > > So it should be the case that _either_ of > mpt-fix-enable-lsi-sas-to-use-msi-as-default.patch and > pci-enable-msi-on-8132.patch would fix David's machine? On David's machine: for kernel after 2.6.29-rc2, it should work, because that typo actually disable the MSI for kernel from 2.6.26 to 2.6.28, MSI is enabled for MPT sas, so it need pci-enable-msi-on-8132.patch. for 2.6.29, we need to fix that typo anyway. LIS guys seems to like to enable MSI in that case... YH -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
