Messages in this thread | | | Date | Fri, 1 Oct 1999 20:29:26 -0700 (PDT) | From | Andre Hedrick <> | Subject | Re: IDE + SMP Lockup (no OOPS) in 2.2.12, 2.2.10 |
| |
Yes there are two styles of the controllers.
Are we up to flag settings based on the hwif->chipset ident?
if (hwif->chipset != ide_pci) do_an_irq_thingy...........
Since some device that are PCI cards but have this flag used for other identification..........OOPS.......
if (hwif->pci_dev) do_an_irq_thingy...........
This may be a better option............ponder...........
Andre Hedrick The Linux IDE guy
On Fri, 1 Oct 1999, Alan Cox wrote:
> > > Well serial is a medium that is almost guaranteed to lose data once in > > > a while ;-) > > > > Ok. Tell me: Why is the PCI serial chip with 128 byte buffer > > experiencing overruns, while the chip soldered to my motherboard > > (probably in one of those SMC multi-io chips (*)) with only 16 byte > > buffer is NOT dropping characters? > > Because the IDE layer disables the shared IRQ in question for periods of > time of you dont have hdparm -u set, and for some periods of time anyway. > > Basically its the IDE code being obnoxious. Fixing the IDE locking would > improve this, but would be a real pain because older IDE controllers you > want to disable_irq and stuff to avoid nasty performance problems. >
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
| |