Hi All,
I'm making a bar code reader driver. This device will be conected by the
serial port.
In my init_module() I have:
if ((request_region (0x3F8, 1, "BARCODEREADER_NAME") == NULL))
{
.. Error handling ...
}
The problem is that always I get a NULL pointer. I think the problem is
because this address is already taken by another device. Please take a
look to my cat /proc/ioports:
0000-001f : dma1
0020-0021 : pic1
0040-0043 : timer0
0050-0053 : timer1
0060-006f : keyboard
0070-0077 : rtc
0080-008f : dma page reg
00a0-00a1 : pic2
00c0-00df : dma2
00f0-00ff : fpu
0170-0177 : ide1
01f0-01f7 : ide0
0300-0301 : MPU401 UART
0376-0376 : ide1
0378-037a : parport0
03c0-03df : vga+
03f6-03f6 : ide0
*03f8-03ff : serial*
0cf8-0cff : PCI conf1
5080-5093 : sis630_smbus
a000-afff : PCI Bus #01
cc00-ccff : 0000:00:01.1
cc00-ccff : sis900
d000-d0ff : 0000:00:01.4
d000-d0ff : Trident Audio
d400-d47f : 0000:00:01.6
d800-d8ff : 0000:00:01.6
ff00-ff0f : 0000:00:00.1
ff00-ff07 : ide0
ff08-ff0f : ide1
So, My question is:
If I can remove this "serial" driver, Will I have this address free to
use it by "my device"?
In case I can remove the "serial" module, Where can I fin it?
I cannot find a module called "serial" doing lsmod. These are all that I
have:
$ lsmod | grep seri*
cpufreq_userspace 4824 0
cpufreq_conservative 7588 0
serio_raw 7556 0
Thanks in advance,
Ulises
uarcidiacono@xxxxxxxxx
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