How to know the USB port number?
I am using a USB hub with 7 downstream ports.
I am connecting 4 of the same devices(custom class device) on 4 ports.
I have a requirement to know to which physical port is a device connected, cause I have to number them accordingly in the application GUI.
I found an ioctl USBDEVFS_HUB_PORTINFO, in "usbdevice_fs.h" which does give me this information.
"hub_ioctl" does give us this information.
now I don't know how to call this ioctl from my application.
Do I have to make any provision in my device driver to talk to the hub driver? if so can anyone please explain me how do we do that.
I did google on this but it seems to be very trivial, so could not find any information.
Note: am using 2.6.22 on i.Mx21S target
Thanks in advance
|PostgreSQL, the NoSQL Database||Jan 29, 2015|
|HPC Cluster Grant Accepting Applications!||Jan 28, 2015|
|Sharing Admin Privileges for Many Hosts Securely||Jan 28, 2015|
|Red Hat Enterprise Linux 7.1 beta available on IBM Power Platform||Jan 23, 2015|
|Designing with Linux||Jan 22, 2015|
|Wondershaper—QOS in a Pinch||Jan 21, 2015|
- PostgreSQL, the NoSQL Database
- Sharing Admin Privileges for Many Hosts Securely
- HPC Cluster Grant Accepting Applications!
- Internet of Things Blows Away CES, and it May Be Hunting for YOU Next
- Designing with Linux
- Wondershaper—QOS in a Pinch
- Ideal Backups with zbackup
- Red Hat Enterprise Linux 7.1 beta available on IBM Power Platform
- Slow System? iotop Is Your Friend
- January 2015 Issue of Linux Journal: Security
Editorial Advisory Panel
Thank you to our 2014 Editorial Advisors!
- Jeff Parent
- Brad Baillio
- Nick Baronian
- Steve Case
- Chadalavada Kalyana
- Caleb Cullen
- Keir Davis
- Michael Eager
- Nick Faltys
- Dennis Frey
- Philip Jacob
- Jay Kruizenga
- Steve Marquez
- Dave McAllister
- Craig Oda
- Mike Roberts
- Chris Stark
- Patrick Swartz
- David Lynch
- Alicia Gibb
- Thomas Quinlan
- Carson McDonald
- Kristen Shoemaker
- Charnell Luchich
- James Walker
- Victor Gregorio
- Hari Boukis
- Brian Conner
- David Lane