Hello,

we have some trouble with reading files from a CD. The same physical
media works fine with 2.6.0-test7 (no IO errors). But it fails with all
2.4 kernels. I added some debug and things start to fail in
usb_stor_transfer_partial() due to result == -ECONNRESET.

The used CD-Rom drive is:
T:  Bus=01 Lev=02 Prnt=02 Port=02 Cnt=02 Dev#=  7 Spd=12  MxCh= 0
D:  Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=05ab ProdID=0030 Rev= 1.00
S:  Manufacturer=In-System Design
S:  Product=USB Storage Adapter
S:  SerialNumber=XXXXXXXXXXXXXXXX
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 98mA
I:  If#= 0 Alt= 0 #EPs= 3 Cls=08(stor.) Sub=02 Prot=50
Driver=usb-storage
E:  Ad=01(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=82(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=83(I) Atr=03(Int.) MxPS=   2 Ivl=2ms

System is a dual xeon 2.4Ghz, 512mb.

If I understand the code correctly, this -ECONNRESET is caused by the
USB layer, not usb-storage. The code to modify ->status in
usb_stor_bulk_msg(), us->current_urb->status == -ENOENT does not
trigger, the result from usb_submit_urb() is also ok.

How can I debug this further? Is an interrupt handling (acpi?) or
similar problem?

-- 
USB is for mice, FireWire is for men!

sUse lINUX ag, nÜRNBERG


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