USB reset errors in 2.6.28*

This is a repost of a message sent to linuxppc-dev. It was recommended
a send it here.

The warp is a PPC based telephony appliance. You can get details from
the Pika website:
http://www.pikatechnologies.com/english/View.asp?x=608

Cheers,
   Sean MacLennan

Anybody else seeing USB problems in the 2.6.28 kernels? The warp has a
USB 1.1 port off the PPC 440EP processor. 

In 2.6.26 we had some problems with certain USB keys, but 2.6.27 fixed
it. However, the 2.6.28 stream broke it again before rc1. We get this
when you try to use a usb key:

sd 0:0:0:0: [sda] 990865 512-byte hardware sectors: (507 MB/483 MiB)
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Assuming drive cache: write through
 sda: sda1
sd 0:0:0:0: [sda] Attached SCSI removable disk
usb 1-1: reset full speed USB device using ppc-of-ohci and address 2
usb 1-1: reset full speed USB device using ppc-of-ohci and address 2
usb 1-1: reset full speed USB device using ppc-of-ohci and address 2
usb 1-1: reset full speed USB device using ppc-of-ohci and address 2
usb 1-1: reset full speed USB device using ppc-of-ohci and address 2
usb 1-1: reset full speed USB device using ppc-of-ohci and address 2
usb 1-1: reset full speed USB device using ppc-of-ohci and address 2
usb 1-1: reset full speed USB device using ppc-of-ohci and address 2
sd 0:0:0:0: timing out command, waited 60s

It then seems to work, but I see corruption on the usb key. I haven't
looked into it too much since we aren't switching to 2.6.28 anytime
soon (it breaks our Secure Digital card driver).

On Wed, Dec 03, 2008 at 08:29:53PM -0500, Sean MacLennan wrote:

It then seems to work, but I see corruption on the usb key. I haven't
looked into it too much since we aren't switching to 2.6.28 anytime
soon (it breaks our Secure Digital card driver).

What driver is that?  Why would 2.6.28 be broken?  If it's an
out-of-tree driver, please let me know and I'll be glad to get it
merged.

thanks,

greg k-h

On Wed, 3 Dec 2008 20:26:07 -0800
"Greg KH" [off-list ref] wrote:

On Wed, Dec 03, 2008 at 08:29:53PM -0500, Sean MacLennan wrote:

quoted

It then seems to work, but I see corruption on the usb key. I
haven't looked into it too much since we aren't switching to 2.6.28
anytime soon (it breaks our Secure Digital card driver).

What driver is that?  Why would 2.6.28 be broken?  If it's an
out-of-tree driver, please let me know and I'll be glad to get it
merged.

I am embarrassed to say that I tried the usb with 2.6.28-rc7 and it
seems to be fixed. I should have tried it with 2.6.28-rc7 *before*
sending the error report :(

Cheers,
  Sean