On 2007.01.21 18:17:01 -0600, Robert Hancock wrote:
> Björn Steinbrink wrote:
> >On 2007.01.21 13:58:01 -0600, Robert Hancock wrote:
> >>Björn Steinbrink wrote:
> >>>All kernels were bad using that approach. So back to square 1. :/
> >>>
> >>>Björn
> >>>
> >>OK guys, here's a new patch to try against 2.6.20-rc5:
> >>
> >>Right now when switching between ADMA mode and legacy mode (i.e. when
> >>going from doing normal DMA reads/writes to doing a FLUSH CACHE) we just
> >>set the ADMA GO register bit appropriately and continue with no delay.
> >>It looks like in some cases the controller doesn't respond to this
> >>immediately, it takes some nanoseconds for the controller's status
> >>registers to reflect the change that was made. It's possible that if we
> >>were trying to issue commands during this time, the controller might not
> >>react properly. This patch adds some code to wait for the status
> >>register to change to the state we asked for before continuing.
> >
> >Just got two exceptions with your patch, none of the debug messages were
> >issued.
> >
> >Björn
>
> Hmm, another miss, apparently.. Has anyone tried removing these lines
> >from nv_host_intr in 2.6.20-rc5 sata_nv.c and see what that does?
>
> /* bail out if not our interrupt */
> if (!(irq_stat & NV_INT_DEV))
> return 0;
Running a kernel with the return statement replace by a line that prints
the irq_stat instead.
Currently I'm seeing lots of 0x10 on ata1 and 0x0 on ata2.
Björn
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
