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From: Andreas Mohr <andi@lisas.de>
To: Andreas Mohr <andi@lisas.de>
Cc: Greg KH <gregkh@linuxfoundation.org>,
	Alan Stern <stern@rowland.harvard.edu>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	linux-usb@vger.kernel.org
Subject: Re: [REGRESSION] [nailed] USB boot failure: USB: EHCI: make ehci-pci a separate driver
Date: Wed, 13 Feb 2013 08:16:28 +0100	[thread overview]
Message-ID: <20130213071628.GA4211@rhlx01.hs-esslingen.de> (raw)
In-Reply-To: <20130213064436.GA22583@rhlx01.hs-esslingen.de>

Hi,

On Wed, Feb 13, 2013 at 07:44:36AM +0100, Andreas Mohr wrote:
> So, what to do? I'm now going to do some experimentation with git revert
> on some revision, and I'm trying to establish the USB port dependency
> (BIOS-owned handoff root hub invisible!?, as discussed in initial mail).


After some bingo moment, seems the solution is easier than expected:

andi@andinet:~$ ls /tmp/initrd_extracted/lib/modules/3.7.0-rc5+/kernel/drivers/usb/host/
ehci-hcd.ko  ohci-hcd.ko  uhci-hcd.ko  xhci-hcd.ko
andi@andinet:~$ ls /lib/modules/3.7.0-rc5+/kernel/drivers/usb/host/
ehci-hcd.ko  isp116x-hcd.ko   sl811_cs.ko   uhci-hcd.ko
ehci-pci.ko  ohci-hcd.ko      sl811-hcd.ko  whci
hwa-hc.ko    r8a66597-hcd.ko  u132-hcd.ko   xhci-hcd.ko

So it's probably only that the initrd simply fails to ship
the ehci-pci.ko module (I could verify this by extending initrd content, BTW).
Now the question would be:
are modules listed in a static list on initramfs package/config side,
or does the kernel fail to signal the list of required modules properly?
(e.g. did some config-side files fail to get upgraded for this dependency??)


So maybe it's not a "regression" per se, but it's at least a grave
usability issue on kernel upgrade which should be handled as benignly as
possible (i.e., without any disruption).

Thanks,

Andreas Mohr

  reply	other threads:[~2013-02-13  7:16 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-02-08 21:51 Linux v3.8-rc7 Linus Torvalds
2013-02-10  0:14 ` [REGRESSION] -rc7/-rc4+: unable to USB boot - enumeration partially broken (was: Linux v3.8-rc7) Andreas Mohr
2013-02-10 14:05   ` Andreas Mohr
2013-02-12 16:07     ` Andreas Mohr
2013-02-12 16:16       ` Greg KH
2013-02-12 21:25         ` Andreas Mohr
2013-02-13  6:44         ` [REGRESSION] [nailed] USB boot failure: USB: EHCI: make ehci-pci a separate driver Andreas Mohr
2013-02-13  7:16           ` Andreas Mohr [this message]
2013-02-13  7:44             ` Andreas Mohr
2013-02-13  7:44               ` Andreas Mohr
2013-02-13 10:05               ` Andreas Mohr
2013-02-13 10:05                 ` Andreas Mohr
2013-02-13 10:50                 ` Colin Guthrie
2013-02-13 10:50                   ` Colin Guthrie
2013-02-13 16:13                   ` Andreas Mohr
2013-02-13 16:26                     ` Colin Guthrie
2013-02-13 16:26                       ` Colin Guthrie
2013-02-13 11:10 ` [-rc7 regression] Block IO/VFS/ext3/timer spinlock lockup? Ingo Molnar
2013-02-13 16:59   ` Linus Torvalds
2013-02-13 23:20     ` Thomas Gleixner
2013-02-14 14:45       ` Ingo Molnar
2013-02-14 14:54         ` Ingo Molnar
2013-02-14 15:08           ` Ingo Molnar
2013-02-14 17:28             ` Thomas Gleixner
2013-02-14 18:22             ` Yinghai Lu
2013-02-15 11:44               ` [-rc7 regression] Buggy commit: "mm: use aligned zone start for pfn_to_bitidx calculation" Ingo Molnar
2013-02-15 22:06                 ` Greg KH
2013-02-16  8:29                   ` Ingo Molnar
2013-03-01 16:50                     ` Greg KH
2013-03-01 17:07                       ` Linus Torvalds
2013-03-01 17:14                         ` Greg KH
2013-02-16  8:25                 ` Ingo Molnar
2013-02-16 18:26                 ` Linus Torvalds
2013-02-16 19:38                   ` Yinghai Lu
2013-02-16 19:51                     ` Linus Torvalds
2013-02-18  8:49                   ` Ingo Molnar
2013-02-18 14:46                   ` Mel Gorman
2013-02-18 18:42                     ` Laura Abbott
2013-02-14 23:05   ` [-rc7 regression] Block IO/VFS/ext3/timer spinlock lockup? Linus Torvalds
2013-02-15 11:39     ` [PATCH] spinlock/debugging: Print out lock name when available Ingo Molnar

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