Re: USB: on suspend to ram/disk all usb devices are replugged
- From: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
- Date: Thu, 29 Mar 2007 11:56:41 -0400 (EDT)
On Thu, 29 Mar 2007, Mark Lord wrote:
Maxim Levitsky wrote:
Hi,
I noticed that after suspend/resume cycle all my usb devices are unplugged/replugged by uhci driver.
While it is not that big problem to me, that can be a real problem if a device is a flash card with mounted
file-system, because disappeared device will cause file-system corruption.
Mmm.. this sounds really bad -- I wonder what happens if the rootfs is on USB ?
The system crashes as soon as it resumes. As you might expect.
With older kernels, things just "worked" this way. Has it now been broken ??
No; it has never worked. Your memory of how older kernels behaved is
wrong.
Alan Stern
P.S.: Help is on the way. I will soon submit a patch to help improve the
situation.
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