On Tue, 2014-12-16 at 15:59 -0200, Marcelo Ricardo Leitner wrote: > It's a > 02:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5722 > Gigabit Ethernet PCI Express > over here > > I put a WARN_ON(1) after those printks, and this is what I got: > > [ 1.550640] pci 0000:02:00.0: 1st 1 1 > [ 1.550643] pci 0000:02:00.0: crs_timeout: 0 > [ 1.550645] ------------[ cut here ]------------ > [ 1.550651] WARNING: CPU: 6 PID: 364 at drivers/pci/probe.c:1445 pci_bus_read_dev_vendor_id+0x1d4/0x1e0() > [ 1.550652] Modules linked in: i915(+) raid0 i2c_algo_bit drm_kms_helper drm e1000e(+) tg3(+) ptp pps_core video > [ 1.550660] CPU: 6 PID: 364 Comm: systemd-udevd Not tainted 3.18.0-rc6+ #8 > [ 1.550661] Hardware name: Dell Inc. OptiPlex 9010/03K80F, BIOS A15 08/12/2013 > [ 1.550662] 0000000000000000 000000004de2d8dc ffff8807eabdf948 ffffffff8173db46 > [ 1.550665] 0000000000000000 0000000000000000 ffff8807eabdf988 ffffffff81094d41 > [ 1.550667] ffff8807eabdf968 ffff8807f1e27000 0000000000000000 0000000000000000 > [ 1.550669] Call Trace: > [ 1.550675] [<ffffffff8173db46>] dump_stack+0x46/0x58 > [ 1.550679] [<ffffffff81094d41>] warn_slowpath_common+0x81/0xa0 > [ 1.550681] [<ffffffff81094e5a>] warn_slowpath_null+0x1a/0x20 > [ 1.550683] [<ffffffff813b2864>] pci_bus_read_dev_vendor_id+0x1d4/0x1e0 > [ 1.550687] [<ffffffff813b7c3e>] pci_device_is_present+0x2e/0x50 > [ 1.550693] [<ffffffffa003364f>] tg3_chip_reset+0x2f/0x940 [tg3] > [ 1.550697] [<ffffffffa0033f9f>] tg3_halt+0x3f/0x1e0 [tg3] > [ 1.550701] [<ffffffffa0044f83>] tg3_init_one+0xb83/0x1a40 [tg3] So does it work if you use a non-zero crs_timeout? The driver has called tg3_halt() which may affect configuration read responses. I need to check with the hardware team to see if the 5722 will return CRS in this scenario. -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
