Re: Someone ( bsg merge ? ) broke {sd,hd}parm on current git

[Gabriel C <nix.or.die@googlemail.com>]

James Bottomley wrote:
> On Thu, 2007-07-19 at 16:31 +0200, Gabriel C wrote:
>   
>> No is not an SATA controller.
>>
>> sda and sdb are SCSI disks connected to an Adaptec AIC-7892P U160/m
>> controller using the aic7xxx driver.
>>     
>
> OK, this definitely works for me, that's what my root disk is on.  I
> think this isn't a kernel problem ... I think it's a udev name clash
> problem.  Try the attached patch, which corrects the names:
>   

Thx, your patch fixes the problem for me.

>   
>> sdc is an ATA-7 disk connected to an IDE controller ( 82801BA IDE U100
>> )  using libata and the ata_piix driver.
>>     
>
>
> James
>
> ---
>
> Index: BUILD-2.6/block/Kconfig
> ===================================================================
> --- BUILD-2.6.orig/block/Kconfig	2007-07-18 11:34:20.000000000 -0500
> +++ BUILD-2.6/block/Kconfig	2007-07-18 11:36:24.000000000 -0500
> @@ -53,7 +53,7 @@ endif # BLOCK
>  
>  config BLK_DEV_BSG
>  	bool "Block layer SG support v4 (EXPERIMENTAL)"
> -	depends on (SCSI=y) && EXPERIMENTAL
> + 	depends on EXPERIMENTAL
>  	---help---
>  	Saying Y here will enable generic SG (SCSI generic) v4 support
>  	for any block device.
> Index: BUILD-2.6/block/bsg.c
> ===================================================================
> --- BUILD-2.6.orig/block/bsg.c	2007-07-18 11:34:20.000000000 -0500
> +++ BUILD-2.6/block/bsg.c	2007-07-18 11:36:24.000000000 -0500
> @@ -1009,29 +1009,6 @@ err:
>  }
>  EXPORT_SYMBOL_GPL(bsg_register_queue);
>  
> -static int bsg_add(struct class_device *cl_dev, struct class_interface *cl_intf)
> -{
> -	int ret;
> -	struct scsi_device *sdp = to_scsi_device(cl_dev->dev);
> -	struct request_queue *rq = sdp->request_queue;
> -
> -	if (rq->kobj.parent)
> -		ret = bsg_register_queue(rq, kobject_name(rq->kobj.parent));
> -	else
> -		ret = bsg_register_queue(rq, kobject_name(&sdp->sdev_gendev.kobj));
> -	return ret;
> -}
> -
> -static void bsg_remove(struct class_device *cl_dev, struct class_interface *cl_intf)
> -{
> -	bsg_unregister_queue(to_scsi_device(cl_dev->dev)->request_queue);
> -}
> -
> -static struct class_interface bsg_intf = {
> -	.add	= bsg_add,
> -	.remove	= bsg_remove,
> -};
> -
>  static struct cdev bsg_cdev = {
>  	.kobj   = {.name = "bsg", },
>  	.owner  = THIS_MODULE,
> @@ -1069,16 +1046,9 @@ static int __init bsg_init(void)
>  	if (ret)
>  		goto unregister_chrdev;
>  
> -	ret = scsi_register_interface(&bsg_intf);
> -	if (ret)
> -		goto remove_cdev;
> -
>  	printk(KERN_INFO BSG_DESCRIPTION " version " BSG_VERSION
>  	       " loaded (major %d)\n", bsg_major);
>  	return 0;
> -remove_cdev:
> -	printk(KERN_ERR "bsg: failed register scsi interface %d\n", ret);
> -	cdev_del(&bsg_cdev);
>  unregister_chrdev:
>  	unregister_chrdev_region(MKDEV(bsg_major, 0), BSG_MAX_DEVS);
>  destroy_bsg_class:
> Index: BUILD-2.6/drivers/scsi/scsi_sysfs.c
> ===================================================================
> --- BUILD-2.6.orig/drivers/scsi/scsi_sysfs.c	2007-07-18 11:36:02.000000000 -0500
> +++ BUILD-2.6/drivers/scsi/scsi_sysfs.c	2007-07-19 10:10:50.000000000 -0500
> @@ -715,6 +715,7 @@ static int attr_add(struct device *dev, 
>  int scsi_sysfs_add_sdev(struct scsi_device *sdev)
>  {
>  	int error, i;
> +	struct request_queue *rq = sdev->request_queue;
>  
>  	if ((error = scsi_device_set_state(sdev, SDEV_RUNNING)) != 0)
>  		return error;
> @@ -734,6 +735,17 @@ int scsi_sysfs_add_sdev(struct scsi_devi
>  	/* take a reference for the sdev_classdev; this is
>  	 * released by the sdev_class .release */
>  	get_device(&sdev->sdev_gendev);
> +
> +	error = bsg_register_queue(rq, sdev->sdev_gendev.bus_id);
> +
> +	if (error)
> +		sdev_printk(KERN_INFO, sdev,
> +			    "Failed to register bsg queue, errno=%d\n", error);
> +
> +	/* we're treating error on bsg register as non-fatal, so pretend
> +	 * nothing went wrong */
> +	error = 0;
> +
>  	if (sdev->host->hostt->sdev_attrs) {
>  		for (i = 0; sdev->host->hostt->sdev_attrs[i]; i++) {
>  			error = attr_add(&sdev->sdev_gendev,
> @@ -780,6 +792,7 @@ void __scsi_remove_device(struct scsi_de
>  	if (scsi_device_set_state(sdev, SDEV_CANCEL) != 0)
>  		return;
>  
> +	bsg_unregister_queue(sdev->request_queue);
>  	class_device_unregister(&sdev->sdev_classdev);
>  	transport_remove_device(dev);
>  	device_del(dev);
>
>
>
>
>   

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