Re: Unsuccessful transactions during usb enumeration

2014-06-18 Thread Greg KH
On Wed, Jun 18, 2014 at 06:26:23AM +, Ranjith T. C. wrote: Thanks for the reply. What exactly do you mean by this? What I meant is whether it could be could be an of the USB controller driver or the hardware? It could be both. Or a bad cable, or bad connection. Try putting some

Re: Unsuccessful transactions during usb enumeration

2014-06-18 Thread sanjeev sharma
Hi Greg, In one of my imx6 based Board when I connect USB Disk first time everything work's ok and I can read/write content from USB Flash Driver but when I do eject and connect again I could see below continuous messages from dmesg and disk never mounted. 218.431346] FAT-fs (sda): Directory

Re: Unsuccessful transactions during usb enumeration

2014-06-18 Thread Greg KH
On Wed, Jun 18, 2014 at 12:22:33PM +0530, sanjeev sharma wrote: Hi Greg, In one of my imx6 based Board when I connect USB Disk first time everything work's ok and I can read/write content from USB Flash Driver but when I do eject and connect again I could see below continuous messages from

Re: Unsuccessful transactions during usb enumeration

2014-06-18 Thread sanjeev sharma
OK ! So USB Driver is trying to read but physically disk is not enumerated but USB Subsystem did recognize the disk as per Logs. usb 2-1.1: new high speed USB device number 6 using fsl-ehci 6[ 216.990681] scsi1 : usb-storage 2-1.1:1.0 5[ 217.983182] scsi 1:0:0:0: Direct-Access USB2.0

Unsuccessful transactions during usb enumeration

2014-06-17 Thread Ranjith T. C.
Hi, I am using a device with Marvel USB controller in device mode with Linux 2.6.22 running on it. During the enumeration, I am getting so many unsuccessful transactions in my USB packet sniffer. Can anyone please tell me the possible reason for this? Any help in this regard is much

Re: Unsuccessful transactions during usb enumeration

2014-06-17 Thread Greg KH
On Wed, Jun 18, 2014 at 05:27:35AM +, Ranjith T. C. wrote: Hi, I am using a device with Marvel USB controller in device mode with Linux 2.6.22 running on it. You do realize just how old and obsolete that kernel version is, right? You are pretty much on your own here, unless you