2010/7/14 Gadiyar, Anand gadi...@ti.com:
Enric Balletbò i Serra
Hello,
When I disconnect an USB pendrive using twl4030 otg as host (step 2)
the usb_disconnect function is not called. OTOH if I reconnect the
device (step 3), then the usb_disconnect function is called.
Does anyone have any ideas why usb_disconnect is not called when the
device is removed?
Which kernel version is this? Can you check if this patch fixes the behavior?
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=7d9645fdca444d53907b22a4b73e3967efe09781
I'm using stable kernel 2.6.33.6
And yes this patch is not applied in this version. I applied and
solves the issue. Thank you very much.
Best regards,
-- Enric
- Anand
Steps to see the feature:
Step 1 : Plug a USB pendrive:
[ 2116.491546] usb 1-1: new high speed USB device using musb_hdrc and
address 6
[ 2116.751861] usb 1-1: New USB device found, idVendor=058f, idProduct=6387
[ 2116.758697] usb 1-1: New USB device strings: Mfr=1, Product=2,
SerialNumber=3
[ 2116.765899] usb 1-1: Product: Mass Storage
[ 2116.770019] usb 1-1: Manufacturer: 2.0
[ 2116.773834] usb 1-1: SerialNumber: A15B7B60
[ 2116.786468] scsi4 : usb-storage 1-1:1.0
[ 2117.797332] scsi 4:0:0:0: Direct-Access 2.0 Flash Disk 8.07 PQ:
0 ANSI: 2
[ 2117.813293] sd 4:0:0:0: [sda] 1968128 512-byte logical blocks: (1.00
GB/961 MiB)
[ 2117.829040] sd 4:0:0:0: [sda] Write Protect is off
[ 2117.834014] sd 4:0:0:0: [sda] Mode Sense: 03 00 00 00
[ 2117.834014] sd 4:0:0:0: [sda] Assuming drive cache: write through
[ 2117.849212] sd 4:0:0:0: [sda] Assuming drive cache: write through
[ 2117.856597] sda: sda1
[ 2117.965698] sd 4:0:0:0: [sda] Assuming drive cache: write through
[ 2117.971954] sd 4:0:0:0: [sda] Attached SCSI removable disk
[ 2118.738769] FAT: bogus number of reserved sectors
[ 2118.743621] VFS: Can't find a valid FAT filesystem on dev sda.
Step 2: Unplug the USB pendrive
[ nothing here ]
Step 3: Plug the USB pendrive:
[ 2218.820556] usb 1-1: USB disconnect, address 6
[ 2219.139831] usb 1-1: new high speed USB device using musb_hdrc and
address 7
[ 2219.400146] usb 1-1: New USB device found, idVendor=058f, idProduct=6387
[ 2219.406951] usb 1-1: New USB device strings: Mfr=1, Product=2,
SerialNumber=3
[ 2219.414184] usb 1-1: Product: Mass Storage
[ 2219.418304] usb 1-1: Manufacturer: 2.0
[ 2219.422119] usb 1-1: SerialNumber: A15B7B60
[ 2219.434875] scsi5 : usb-storage 1-1:1.0
[ 2220.445770] scsi 5:0:0:0: Direct-Access 2.0 Flash Disk 8.07 PQ:
0 ANSI: 2
[ 2220.461547] sd 5:0:0:0: [sda] 1968128 512-byte logical blocks:(1.00
GB/961 MiB)
[ 2220.476379] sd 5:0:0:0: [sda] Write Protect is off
[ 2220.481323] sd 5:0:0:0: [sda] Mode Sense: 03 00 00 00
[ 2220.481323] sd 5:0:0:0: [sda] Assuming drive cache: write through
[ 2220.497314] sd 5:0:0:0: [sda] Assuming drive cache: write through
[ 2220.504516] sda: sda1
[ 2220.603790] sd 5:0:0:0: [sda] Assuming drive cache: write through
[ 2220.610015] sd 5:0:0:0: [sda] Attached SCSI removable disk
[ 2221.378570] FAT: bogus number of reserved sectors
[ 2221.383453] VFS: Can't find a valid FAT filesystem on dev sda.
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