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From: Charles Keepax <ckeepax@opensource.cirrus.com>
To: <robh@kernel.org>
Cc: <peter.chen@kernel.org>, <gregkh@linuxfoundation.org>,
	<linux-usb@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: ChipIdea USB regression
Date: Fri, 14 Jan 2022 10:56:20 +0000	[thread overview]
Message-ID: <20220114105620.GK18506@ediswmail.ad.cirrus.com> (raw)

Hi guys,

My Zynq based board stopped booting today, a bisect points to this
patch:

commit 0f153a1b8193 ("usb: chipidea: Set the DT node on the child device")

It looks like it gets stuck in some sort of boot loop of doom:

48 locks held by swapper/0/1:
#0: 42a2c0d8 (&dev->mutex){....}-{3:3}, at: __driver_attach+0x12c/0x15c
#1: 42a41cd8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x2c/0x164
#2: 42abdcd8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x2c/0x164
#3: 42abd8d8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x2c/0x164
#4: 42abd4d8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x2c/0x164
#5: 42abd0d8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x2c/0x164
#6: 42b00cd8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x2c/0x164
#7: 42b008d8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x2c/0x164
<snip>
[<40100af4>] (__irq_svc) from [<40920270>] (_raw_spin_unlock_irqrestore+0x30/0x5c)
[<40920270>] (_raw_spin_unlock_irqrestore) from [<40433238>] (klist_next+0x84/0xac)
[<40433238>] (klist_next) from [<40503a5c>] (bus_for_each_drv+0x60/0xbc)
[<40503a5c>] (bus_for_each_drv) from [<40505ea8>] (__device_attach+0xc4/0x164)
[<40505ea8>] (__device_attach) from [<405047e0>] (bus_probe_device+0x28/0x84)
[<405047e0>] (bus_probe_device) from [<405022b8>] (device_add+0x590/0x7c4)
[<405022b8>] (device_add) from [<4050835c>] (platform_device_add+0xa8/0x1f0)
[<4050835c>] (platform_device_add) from [<405f329c>] (ci_hdrc_add_device+0x3b4/0x434)
[<405f329c>] (ci_hdrc_add_device) from [<405f5f0c>] (ci_hdrc_usb2_probe+0x130/0x180)
[<405f5f0c>] (ci_hdrc_usb2_probe) from [<40507e60>] (platform_probe+0x58/0xa8)
[<40507e60>] (platform_probe) from [<4050584c>] (really_probe+0x1d8/0x418)
[<4050584c>] (really_probe) from [<40505c44>] (__driver_probe_device+0x1b8/0x1f0)
[<40505c44>] (__driver_probe_device) from [<40505ca0>] (driver_probe_device+0x24/0xa4)
[<40505ca0>] (driver_probe_device) from [<405060b0>] (__device_attach_driver+0xbc/0x110)
[<405060b0>] (__device_attach_driver) from [<40503aa4>] (bus_for_each_drv+0xa8/0xbc)
[<40503aa4>] (bus_for_each_drv) from [<40505ea8>] (__device_attach+0xc4/0x164)
[<40505ea8>] (__device_attach) from [<405047e0>] (bus_probe_device+0x28/0x84)
[<405047e0>] (bus_probe_device) from [<405022b8>] (device_add+0x590/0x7c4)
[<405022b8>] (device_add) from [<4050835c>] (platform_device_add+0xa8/0x1f0)
[<4050835c>] (platform_device_add) from [<405f329c>] (ci_hdrc_add_device+0x3b4/0x434)
[<405f329c>] (ci_hdrc_add_device) from [<405f5f0c>] (ci_hdrc_usb2_probe+0x130/0x180)
[<405f5f0c>] (ci_hdrc_usb2_probe) from [<40507e60>] (platform_probe+0x58/0xa8)
[<40507e60>] (platform_probe) from [<4050584c>] (really_probe+0x1d8/0x418)
[<4050584c>] (really_probe) from [<40505c44>] (__driver_probe_device+0x1b8/0x1f0)
[<40505c44>] (__driver_probe_device) from [<40505ca0>] (driver_probe_device+0x24/0xa4)
[<40505ca0>] (driver_probe_device) from [<405060b0>] (__device_attach_driver+0xbc/0x110)
[<405060b0>] (__device_attach_driver) from [<40503aa4>] (bus_for_each_drv+0xa8/0xbc)
[<40503aa4>] (bus_for_each_drv) from [<40505ea8>] (__device_attach+0xc4/0x164)
[<40505ea8>] (__device_attach) from [<405047e0>] (bus_probe_device+0x28/0x84)
[<405047e0>] (bus_probe_device) from [<405022b8>] (device_add+0x590/0x7c4)
[<405022b8>] (device_add) from [<4050835c>] (platform_device_add+0xa8/0x1f0)
[<4050835c>] (platform_device_add) from [<405f329c>] (ci_hdrc_add_device+0x3b4/0x434)
[<405f329c>] (ci_hdrc_add_device) from [<405f5f0c>] (ci_hdrc_usb2_probe+0x130/0x180)
[<405f5f0c>] (ci_hdrc_usb2_probe) from [<40507e60>] (platform_probe+0x58/0xa8)
[<40507e60>] (platform_probe) from [<4050584c>] (really_probe+0x1d8/0x418)
[<4050584c>] (really_probe) from [<40505c44>] (__driver_probe_device+0x1b8/0x1f0)
[<40505c44>] (__driver_probe_device) from [<40505ca0>] (driver_probe_device+0x24/0xa4)
[<40505ca0>] (driver_probe_device) from [<405060b0>] (__device_attach_driver+0xbc/0x110)
[<405060b0>] (__device_attach_driver) from [<40503aa4>] (bus_for_each_drv+0xa8/0xbc)
[<40503aa4>] (bus_for_each_drv) from [<40505ea8>] (__device_attach+0xc4/0x164)
[<40505ea8>] (__device_attach) from [<405047e0>] (bus_probe_device+0x28/0x84)
[<405047e0>] (bus_probe_device) from [<405022b8>] (device_add+0x590/0x7c4)

I will keep poking it today to see if I can figure out more of
what is actually going wrong, but if any of you guys had any
thoughts/suggestions or if you want me to provide any additional
info all of those would be greatly appreciated.

Thanks,
Charles

             reply	other threads:[~2022-01-14 10:56 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-14 10:56 Charles Keepax [this message]
2022-01-14 11:18 ` Charles Keepax
2022-01-15 15:55   ` Rob Herring
2022-01-17  9:26     ` Charles Keepax
2022-01-17  9:55       ` Charles Keepax
2022-01-18 14:39         ` Rob Herring
2022-01-18 16:16           ` Charles Keepax
2022-01-16 10:21 ` Thorsten Leemhuis
2022-01-18 16:53   ` Rob Herring
2022-01-18 17:33     ` Thorsten Leemhuis
2022-01-18 18:37       ` Rob Herring

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