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 - 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. > N�����r��y����b�X��ǧv�^�){.n�+����{��f��{ay� ʇڙ�,j��f���h���z� �w��� ���j:+v���w�j�m��������zZ+�����ݢj"��!�i
