RE: [PATCH 1/11] mpt2sas: mpt2sas_base sources

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On Tuesday, March 03, 2009 2:29 PM, James Bottomley wrote: 
> On Wed, 2009-02-25 at 14:12 -0700, Matthew Wilcox wrote:
> > On Wed, Feb 25, 2009 at 01:27:00PM -0700, Moore, Eric wrote:
> > > What are you suggesting?   Calling wmb()?
> > 
> > PCI writes can be posted, so the him_register writel() may 
> not complete
> > for a few thousand cycles.  wmb() isn't going to solve the 
> problem.  A
> > readl() from the device would, as would your current solution of
> > ignoring subsequent interrupts.
> 
> This seems to be the most serious issue with the current 
> patch set.  If
> you repost with that fixed, I can put it into scsi-misc and we can
> address the other issues later.
> 

I will repost the patch set tommorrow with the following changes

(1) Add readl following writel from the function that disables interrupts

(2) Replace 0xFFFFFFFFFFFFFFFFULL with ~0ULL

(3) when calling pci_enable_msix, only pass one msix entry (instead of 15).  

(4) remove the "current HW implementation uses..... " comment in the sources

(5) merge in a bug fix for SIGIO/POLLIN notifcation reported by the storlib team.

Eric Moore--
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