On Wed, Jul 15, 2015 at 6:52 AM, Timothy Pearson <tpear...@raptorengineeringinc.com> wrote: >> I have just kept the same description provide by Timothy in his >> initial patch. >> >> But I observe that their may be chance of getting "unable to handle >> kernel NULL pointer dereference" kernel panic if no Memory Resource >> available in the PCI subsystem. So agreed to the Timothy proposal of >> aborting the driver initialization if it doesn't detect any Memory >> resource instead of whole system get into panic state. >> > On some systems Linux is unable / unwilling to assign a BAR if the BIOS > does not assign one at startup. I didn't look into the Linux allocator > side of things in much detail, but it is quite possible that Linux is > unaware the device only has partial resources assigned. >
Would be great if you can post boot log so we can figure about why those BARs are not assigned. Yinghai -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
