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Commit 94fd0db7 authored by Hannes Reinecke's avatar Hannes Reinecke Committed by Greg Kroah-Hartman
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[PATCH] Floppy: Add cmos attribute to floppy driver 



Currently only a device 'fdX' shows up in sysfs; the other possible
device for this drive (like fd0h1440 etc) must be guessed from there.

This patch corrects the floppy driver to create a platform device for
each floppy found; each platform device also has an attribute 'cmos'
which represents the cmos type for this drive. From this attribute the
other possible device types can be computed.

From: Hannes Reinecke <hare@suse.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 76d1ce00

drivers/block/floppy.c

+29 −13
Original line number Diff line number Diff line
@@ -493,6 +493,8 @@ static struct floppy_struct user_params[N_DRIVE]; 


static sector_t floppy_sizes[256];



static char floppy_device_name[] = "floppy";



/*

 * The driver is trying to determine the correct media format

 * while probing is set. rw_interrupt() clears it after a
@@ -4191,18 +4193,25 @@ static int __init floppy_setup(char *str) 


static int have_no_fdc = -ENODEV;



static ssize_t floppy_cmos_show(struct device *dev, struct device_attribute *attr, char *buf)

{

	struct platform_device *p = container_of(dev,struct platform_device,dev);

	int drive = p->id;

	ssize_t retval;



	retval = sprintf(buf,"%X\n", UDP->cmos);



	return retval;

}



DEVICE_ATTR(cmos,S_IRUGO,floppy_cmos_show,NULL);



static void floppy_device_release(struct device *dev)

{

	complete(&device_release);

}



static struct platform_device floppy_device = {

	.name		= "floppy",

	.id		= 0,

	.dev		= {

			.release = floppy_device_release,

			}

};

static struct platform_device floppy_device[N_DRIVE];



static struct kobject *floppy_find(dev_t dev, int *part, void *data)

{
@@ -4370,20 +4379,26 @@ static int __init floppy_init(void) 
		goto out_flush_work;

	}



	err = platform_device_register(&floppy_device);

	if (err)

		goto out_flush_work;



	for (drive = 0; drive < N_DRIVE; drive++) {

		if (!(allowed_drive_mask & (1 << drive)))

			continue;

		if (fdc_state[FDC(drive)].version == FDC_NONE)

			continue;



		floppy_device[drive].name = floppy_device_name;

		floppy_device[drive].id = drive;

		floppy_device[drive].dev.release = floppy_device_release;



		err = platform_device_register(&floppy_device[drive]);

		if (err)

			goto out_flush_work;



		device_create_file(&floppy_device[drive].dev,&dev_attr_cmos);

		/* to be cleaned up... */

		disks[drive]->private_data = (void *)(long)drive;

		disks[drive]->queue = floppy_queue;

		disks[drive]->flags |= GENHD_FL_REMOVABLE;

		disks[drive]->driverfs_dev = &floppy_device.dev;

		disks[drive]->driverfs_dev = &floppy_device[drive].dev;

		add_disk(disks[drive]);

	}
@@ -4603,10 +4618,11 @@ void cleanup_module(void) 
		    fdc_state[FDC(drive)].version != FDC_NONE) {

			del_gendisk(disks[drive]);

			unregister_devfs_entries(drive);

			device_remove_file(&floppy_device[drive].dev, &dev_attr_cmos);

			platform_device_unregister(&floppy_device[drive]);

		}

		put_disk(disks[drive]);

	}

	platform_device_unregister(&floppy_device);

	devfs_remove("floppy");



	del_timer_sync(&fd_timeout);