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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: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Hannes Reinecke 2005-07-15 10:09:25 +02:00 committed by Greg Kroah-Hartman
parent 76d1ce00bd
commit 94fd0db7bf
1 changed files with 29 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
drivers/block/floppy.c
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@ -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);