Commit bbad4394 authored by Alexander Viro's avatar Alexander Viro Committed by Linus Torvalds

[PATCH] floppy fixes

corrected handling of sizes.  Ugh.
parent 02bf8fda
......@@ -777,7 +777,7 @@ static int disk_change(int drive)
DPRINT("Disk type is undefined after "
"disk change\n");
current_type[drive] = NULL;
floppy_sizes[TOMINOR(drive)] = MAX_DISK_SIZE;
floppy_sizes[TOMINOR(drive)] = MAX_DISK_SIZE << 1;
}
/*USETF(FD_DISK_NEWCHANGE);*/
......@@ -2424,8 +2424,7 @@ static void rw_interrupt(void)
return;
}
current_type[current_drive] = _floppy;
floppy_sizes[TOMINOR(current_drive) ]=
(_floppy->size+1)>>1;
floppy_sizes[TOMINOR(current_drive) ]= _floppy->size;
break;
}
......@@ -2434,7 +2433,7 @@ static void rw_interrupt(void)
DPRINT("Auto-detected floppy type %s in fd%d\n",
_floppy->name,current_drive);
current_type[current_drive] = _floppy;
floppy_sizes[TOMINOR(current_drive)] = (_floppy->size+1) >> 1;
floppy_sizes[TOMINOR(current_drive)] = _floppy->size;
probing = 0;
}
......@@ -3343,7 +3342,7 @@ static inline int set_geometry(unsigned int cmd, struct floppy_struct *g,
floppy_type[type].name="user format";
for (cnt = type << 2; cnt < (type << 2) + 4; cnt++)
floppy_sizes[cnt]= floppy_sizes[cnt+0x80]=
(floppy_type[type].size+1)>>1;
floppy_type[type].size+1;
process_fd_request();
for (cnt = 0; cnt < N_DRIVE; cnt++){
if (ITYPE(drive_state[cnt].fd_device) == type &&
......@@ -3362,7 +3361,7 @@ static inline int set_geometry(unsigned int cmd, struct floppy_struct *g,
if (buffer_drive == drive)
SUPBOUND(buffer_max, user_params[drive].sect);
current_type[drive] = &user_params[drive];
floppy_sizes[drive] = (user_params[drive].size+1) >> 1;
floppy_sizes[drive] = user_params[drive].size;
if (cmd == FDDEFPRM)
DRS->keep_data = -1;
else
......@@ -3536,7 +3535,7 @@ static int fd_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
case FDCLRPRM:
LOCK_FDC(drive,1);
current_type[drive] = NULL;
floppy_sizes[drive] = MAX_DISK_SIZE;
floppy_sizes[drive] = MAX_DISK_SIZE << 1;
UDRS->keep_data = 0;
return invalidate_drive(inode->i_bdev);
case FDSETPRM:
......@@ -3710,11 +3709,6 @@ static int floppy_open(struct inode * inode, struct file * filp)
int try;
char *tmp;
if (!filp) {
DPRINT("Weird, open called with filp=0\n");
return -EIO;
}
filp->private_data = (void*) 0;
drive = DRIVE(inode->i_rdev);
......@@ -3925,6 +3919,7 @@ static int floppy_revalidate(kdev_t dev)
#define NO_GEOM (!current_type[drive] && !TYPE(dev))
int drive=DRIVE(dev);
int cf;
int res = 0;
if (UTESTF(FD_DISK_CHANGED) ||
UTESTF(FD_VERIFY) ||
......@@ -3950,14 +3945,15 @@ static int floppy_revalidate(kdev_t dev)
UDRS->generation++;
if (NO_GEOM){
/* auto-sensing */
return floppy_read_block_0(dev);
}
res = floppy_read_block_0(dev);
} else {
if (cf)
poll_drive(0, FD_RAW_NEED_DISK);
process_fd_request();
}
}
set_capacity(&disks[drive], floppy_sizes[minor(dev)]);
return 0;
return res;
}
static struct block_device_operations floppy_fops = {
......@@ -4261,9 +4257,9 @@ int __init floppy_init(void)
for (i=0; i<256; i++)
if (ITYPE(i))
floppy_sizes[i] = (floppy_type[ITYPE(i)].size+1) >> 1;
floppy_sizes[i] = floppy_type[ITYPE(i)].size;
else
floppy_sizes[i] = MAX_DISK_SIZE;
floppy_sizes[i] = MAX_DISK_SIZE << 1;
blk_init_queue(BLK_DEFAULT_QUEUE(MAJOR_NR), do_fd_request, &floppy_lock);
reschedule_timeout(MAXTIMEOUT, "floppy init", MAXTIMEOUT);
......
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