Talkback for article: 264, November2002

Fail Safe Port Allocation for Linux Device Drivers

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From: Alain Gauthier [ date: 2002-11-01 ]
Congradulation for a very interesting article. Keep on going.
From: Viswanath P <viswap(at)> [ date: 2002-11-04 ]
Nice article. Sets the platform for device drivers handling. Expecting a series of articles on handling interrupts, DMA access etc.,. Thanks LF and the author.
From: laurie sparke [ date: 2002-12-02 ]
Thanks for explaining the basics of I/O port operation. There are too many articles out there that overly confuse the issue
From: Fun <fun(at)> [ date: 2002-12-17 ]
Usefull article, but small :(
Small misprint - "cat /proc/interrupts" instead of "cat /proc/ioports" ;)
From: guido [ date: 2002-12-22 ]
Ok, thanks for the correction. I will change cat /proc/interrupts
to cat /proc/ioports
From: shashi <natslash(at)> [ date: 2003-05-20 ]
i got some header file errors while trying to compile the example function given in lfy mag,please help me in detail.mail me in any case,please.thank u.

From: shamith <shamith_dp(at)> [ date: 2003-07-23 ]
To start with this is really good. ( FOUR *) .
Thanx a lot. Keep Posting additional articles in LFY & ur PAGE.

PS: in kernel programming we define *** #define ___KERNEL___ ***
I want to know what this means.
From: chen xuguang <xgchen(at)> [ date: 2003-10-29 ]
It's very good, Thank you very much! I hope to read more!
From: Seb <ed_bracam(at)> [ date: 2003-10-31 ]
Hello, Im trying to program a special module to read and write in special registers on a Xilinx virtex II pro (with fpga). I have tested my module on a notebook, and its successful, I can read and write memory address.
But in my board , when I try just to read a memory address, the module create a segmentation fault and is busy.
I use the fonction inw and I have tried several memory range, each test return the same error.
Have you a solution for my problem ?
From: rikky1980 <hawkgbw(at)> [ date: 2003-11-24 ]
Nice Job!Expecting more articles about handling ports!
From: Birupakshya <haibiru(at)> [ date: 2004-04-13 ]
This is a fine article.It helped me a lot to understand about i/o ports .I may request the author to enlarge the article adding some more features like memory mapping and interrupt handling

From: Naresh Bhalala <nbhalala(at)> [ date: 2004-06-25 ]
Thanks for ur Article and appreciated....
I need Help from You -
I have to write a Device Drier for Network Adapter Card and i want to learn about Hardware interaction from Kernel in C & Linux...
Plz suggest something if u r not on this task....
Thanks in advance...
Naresh Bhalala
From: Jasdeep. S <jasdeep_js(at)> [ date: 2005-08-29 ]
its a nice article,i am specially convinced with the usage of check_region & request_region functions and thats what i was looking for.
it was really good to go through this.
From: vad.exe <vad.exe(at)> [ date: 2005-09-01 ]
its very interesting Article. i will work with this topic later,i thing.

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