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Date: Tue, 16 Dec 2014 18:02:43 -0200 From: Marcelo Ricardo Leitner <marcelo.leitner@...il.com> To: Michael Chan <mchan@...adcom.com> CC: Bjorn Helgaas <bhelgaas@...gle.com>, Rajat Jain <rajatxjain@...il.com>, Nils Holland <nholland@...ys.org>, David Miller <davem@...emloft.net>, netdev <netdev@...r.kernel.org>, "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>, Rafael Wysocki <rjw@...ysocki.net>, Prashant Sreedharan <prashant@...adcom.com> Subject: Re: [bisected] tg3 broken in 3.18.0? On 16-12-2014 17:54, Michael Chan wrote: > 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. Sorry, I replied to the thread that you weren't in yet. It didn't.. http://thread.gmane.org/gmane.linux.network/342566/focus=37932 Marcelo -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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