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Old 09-08-2008
regarding device driver

Hi All,
I have a device driver that uses UARTserial port to write/read to-from a device.
That device driver is working fine on FC3 machine( kernel version 2.6.12)...
Now I am switching to FC9 (kernel version 2.6.25.11-97).I have changed the interrupt flag SA_INTERRUPT to IRQF_DISABLED for FC9.
device driver is compiling & loading properly.My program is able to send the data as well as device is also responding but I m not able to get the data inside the PC.According to me ,recieve data line interrupt is not able to get CPU attention in properly time.may be I have to increase the priority of IRQ4.
so plz tell me how to increase the priority of IRQ4 in FC9 or any other solutuion...
Thnx in advance....

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UDAV(4) 						   BSD Kernel Interfaces Manual 						   UDAV(4)

NAME
udav -- Davicom DM9601 USB Ethernet driver SYNOPSIS
To compile this driver into the kernel, place the following lines in your kernel configuration file: device ehci device uhci device ohci device usb device miibus device udav Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5): if_udav_load="YES" HARDWARE
The udav driver supports the following adapters: o Corega FEther USB-TXC o ShanTou ST268 USB NIC DESCRIPTION
The udav driver provides support for USB Ethernet adapters based on the Davicom DM9601 chipset. For more information on configuring this device, see ifconfig(8). SEE ALSO
altq(4), arp(4), miibus(4), netintro(4), ng_ether(4), usb(4), ifconfig(8) Davicom DM9601 data sheet, http://www.davicom.com.tw/big5/download/Data%20Sheet/DM9601-DS-P01-930914.pdf. HISTORY
The udav device driver first appeared in NetBSD 2.0. AUTHORS
The udav driver was written by Shingo WATANABE <nabe@nabechan.org>. BSD
July 16, 2005 BSD

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