mark_bh in Linux 2.6.12 kernel

mark_bh in Linux 2.6.12 kernel

[shiva g]

Hi all,
    We are porting a usb host controller driver from 2.4.18 kernel to 2.6.12 
kernel. We face some issues with
mark_bh( ) call. Can anyone suggest us how we proceed in porting mark_bh( ) 
in the 2.6.12 kernel.

thanks and regards
shiva g 

Re: mark_bh in Linux 2.6.12 kernel

[Sam Ravnborg]

On Wed, Mar 29, 2006 at 04:12:43PM +0530, shiva g wrote:
> Hi all,
>    We are porting a usb host controller driver from 2.4.18 kernel to 2.6.12 
> kernel. We face some issues with
> mark_bh( ) call. Can anyone suggest us how we proceed in porting mark_bh( ) 
> in the 2.6.12 kernel.
Posting the source may give you more/better feedback...

	Sam

Re: mark_bh in Linux 2.6.12 kernel

[shiva g]

Here is the source

static __inline__ void usbd_schedule_device_bh(struct usb_device_instance 
*device)
{
    if (device && (device->status != USBD_CLOSING) && 
!device->device_bh.sync) {
        queue_task(&device->device_bh, &tq_immediate);
        mark_bh(IMMEDIATE_BH);
    }
}

Also,in the below code, will replacing "schedule_task" simply by 
"schedule_work" work?
static __inline__ void usbd_schedule_function_bh(struct usb_device_instance 
*device)
{
    if (device && (device->status != USBD_CLOSING) && 
!device->function_bh.sync) {
    schedule_task(&device->function_bh);
    }

---- Original Message ----- 
From: "Sam Ravnborg" <sam@ravnborg.org>
To: "shiva g" <shiva@isofttech.com>
Cc: <linux-kernel@vger.kernel.org>
Sent: Wednesday, March 29, 2006 4:26 PM
Subject: Re: mark_bh in Linux 2.6.12 kernel


> On Wed, Mar 29, 2006 at 04:12:43PM +0530, shiva g wrote:
>> Hi all,
>>    We are porting a usb host controller driver from 2.4.18 kernel to 
>> 2.6.12
>> kernel. We face some issues with
>> mark_bh( ) call. Can anyone suggest us how we proceed in porting 
>> mark_bh( )
>> in the 2.6.12 kernel.
> Posting the source may give you more/better feedback...
>
> Sam
> -
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Re: mark_bh in Linux 2.6.12 kernel

[Peter Hagervall]

On Wed, Mar 29, 2006 at 04:31:49PM +0530, shiva g wrote:
> Here is the source
> 
> static __inline__ void usbd_schedule_device_bh(struct usb_device_instance 
> *device)
> {
>    if (device && (device->status != USBD_CLOSING) && 
> !device->device_bh.sync) {
>        queue_task(&device->device_bh, &tq_immediate);
>        mark_bh(IMMEDIATE_BH);
>    }
> }
> 
> Also,in the below code, will replacing "schedule_task" simply by 
> "schedule_work" work?
> static __inline__ void usbd_schedule_function_bh(struct usb_device_instance 
> *device)
> {
>    if (device && (device->status != USBD_CLOSING) && 
> !device->function_bh.sync) {
>    schedule_task(&device->function_bh);
>    }
> 

Have a look at http://lwn.net/images/pdf/LDD3/ch10.pdf

It should answer your questions.

	Peter

-- 
Peter Hagervall......................email: hager@cs.umu.se
Department of Computing Science........tel: +46(0)90 786 7018
University of Umeå, SE-901 87 Umeå.....fax: +46(0)90 786 6126