Messages in this thread | | | From | Paul Sargent <> | Subject | RE: Scanning a Second PCI bus in 2.2.3 | Date | Mon, 22 Mar 1999 19:16:29 -0000 |
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The patch worked great. Thanks Martin. Has this been submitted for 2.2.4?
Paul
P.S. 2.2.3 also fixed my NFS->Sun problem. All is looking good here.
> -----Original Message----- > From: Martin Mares [SMTP:mj@atrey.karlin.mff.cuni.cz] > Sent: 21 March 1999 15:39 > To: Paul M Sargent > Cc: linux-kernel@vger.rutgers.edu; paul.sargent@3dlabs.com > Subject: Re: Scanning a Second PCI bus in 2.2.3 > > Hello! > > > I've been running a Quad PPro 200 SMP box on kernels ~2.1.70 upwards > > and have never had this problem until my last upgrade from 2.1.128 to > > 2.2.3. > > By the way -- it's a Compaq, isn't it? > > > The box contains 2x Adaptec 7880 SCSI controllers which fail to get > > identified at boot, despite the AIC-7xxx driver being compiled in. By > > inserting various debug printk's into the source we've tracked the code > > down to the detect routines (basically a pci_scan_bus) for the > > controller, but then nothing is found. > > > > Putting Printk's into the PCI routines seem to show that the kernel > > never looks at the second PCI bus in the system. Now unfortunalty all > > the SCSI controllers are on the motherboard so I don't have to option of > > moving them. > > > > Now I know that the PCI code has been overhauled in the time period I'm > > talking about, so does anybody have any idea what the difference maybe. > > When I get back to the machine (it's about 200 miles away at the moment) > > I'll post a /proc/pci output if people will find it useful. > > Please send me 'lspci -vvx' output and try the following patch. > > Have a nice fortnight > -- > Martin `MJ' Mares <mj@ucw.cz> http://atrey.karlin.mff.cuni.cz/~mj/ > Faculty of Math and Physics, Charles University, Prague, Czech Rep., Earth > "When you open WINDOWS, you let BUGS in!" > > > --- arch/i386/kernel/bios32.c.mj Wed Mar 17 11:24:54 1999 > +++ arch/i386/kernel/bios32.c Sun Mar 21 14:12:01 1999 > @@ -997,15 +997,15 @@ > l != 0x0000 && l != 0xffff) { > #ifdef CONFIG_PCI_BIOS > if (pci_bios_present) { > - int succ, idx = 0; > + int err, idx = 0; > u8 bios_bus, bios_dfn; > u16 d; > pcibios_read_config_word(n, i, > PCI_DEVICE_ID, &d); > DBG("BIOS test for %02x:%02x > (%04x:%04x)\n", n, i, l, d); > - while ((succ = > pci_bios_find_device(l, d, idx, &bios_bus, &bios_dfn)) && > + while (!(err = > pci_bios_find_device(l, d, idx, &bios_bus, &bios_dfn)) && > (bios_bus != n || bios_dfn != > i)) > idx++; > - if (!succ) > + if (err) > break; > } > #endif
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