Messages in this thread | | | Subject | USB flash card reader | From | Brian May <> | Date | 29 Aug 2001 15:38:48 +1000 |
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Hello,
I have a usb-storage.o USB device, that to /proc/bus/usb/devices looks like this:
T: Bus=01 Lev=02 Prnt=03 Port=01 Cnt=02 Dev#= 7 Spd=12 MxCh= 0 D: Ver= 1.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=0781 ProdID=0001 Rev= 2.00 S: Manufacturer=SanDisk Corporation S: Product=SanDisk USB ImageMate C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=100mA I: If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 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=255ms
When "mount /dev/camera" has been entered, the first time it complains that it can't find the device (something funny with hotplug here). So I unplug the USB device and plug it back in again. This is normal.
Now, the same mount command in entered, the process hangs in kernel mode (so kill -9 will not work). Furthermore, the computer hangs when shutting down, making a clean shutdown impossible. (Or perhaps I am just being too impatient and not waiting longer enough for something to timeout?)
Only problem is that when I go to reproduce this problem with/without strace, it works!
As far as I know the only potentially serious mistakes the user could make are unplugging the USB device or removing the flash card when it is mounted, but as far as I am aware, neither of those cases apply here.
Any ideas?
Only problem is that I have been telling others how reliable and robust Linux is, but what does it do, but crash! Argghh! -- Brian May <bam@snoopy.apana.org.au> - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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