Steve Hirsch, Andreas Koppenh"ofer, Michael Leodolter, Eyal Lebedinsky,
Michael Schaefer, J"org Weule, and Eric Youngdale.
- Copyright 1992 - 2006 Kai Makisara
+ Copyright 1992 - 2007 Kai Makisara
email Kai.Makisara@kolumbus.fi
Some small formal changes - aeb, 950809
Last modified: 18-JAN-1998 Richard Gooch <rgooch@atnf.csiro.au> Devfs support
*/
-static const char *verstr = "20061107";
+static const char *verstr = "20070203";
#include <linux/module.h>
MODULE_DESCRIPTION("SCSI tape (st) driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS_CHARDEV_MAJOR(SCSI_TAPE_MAJOR);
+MODULE_ALIAS_SCSI_DEVICE(TYPE_TAPE);
/* Set 'perm' (4th argument) to 0 to disable module_param's definition
* of sysfs parameters (which module_param doesn't yet support).
static int st_probe(struct device *);
static int st_remove(struct device *);
-static int do_create_driverfs_files(void);
-static void do_remove_driverfs_files(void);
+static int do_create_sysfs_files(void);
+static void do_remove_sysfs_files(void);
static int do_create_class_files(struct scsi_tape *, int, int);
static struct scsi_driver st_template = {
STps = &(STp->ps[i]);
STps->rw = ST_IDLE;
}
+ STp->try_dio_now = STp->try_dio;
STp->recover_count = 0;
DEB( STp->nbr_waits = STp->nbr_finished = 0;
STp->nbr_requests = STp->nbr_dio = STp->nbr_pages = STp->nbr_combinable = 0; )
struct st_buffer *STbp = STp->buffer;
if (is_read)
- i = STp->try_dio && try_rdio;
+ i = STp->try_dio_now && try_rdio;
else
- i = STp->try_dio && try_wdio;
+ i = STp->try_dio_now && try_wdio;
if (i && ((unsigned long)buf & queue_dma_alignment(
STp->device->request_queue)) == 0) {
STm->do_async_writes && STps->eof < ST_EOM_OK;
if (STp->block_size != 0 && STm->do_buffer_writes &&
- !(STp->try_dio && try_wdio) && STps->eof < ST_EOM_OK &&
+ !(STp->try_dio_now && try_wdio) && STps->eof < ST_EOM_OK &&
STbp->buffer_bytes < STbp->buffer_size) {
STp->dirty = 1;
/* Don't write a buffer that is not full enough. */
if (STp->block_size == 0)
blks = bytes = count;
else {
- if (!(STp->try_dio && try_rdio) && STm->do_read_ahead) {
+ if (!(STp->try_dio_now && try_rdio) && STm->do_read_ahead) {
blks = (STp->buffer)->buffer_blocks;
bytes = blks * STp->block_size;
} else {
goto out;
STm = &(STp->modes[STp->current_mode]);
- if (!(STm->do_read_ahead) && STp->block_size != 0 &&
- (count % STp->block_size) != 0) {
- retval = (-EINVAL); /* Read must be integral number of blocks */
- goto out;
+ if (STp->block_size != 0 && (count % STp->block_size) != 0) {
+ if (!STm->do_read_ahead) {
+ retval = (-EINVAL); /* Read must be integral number of blocks */
+ goto out;
+ }
+ STp->try_dio_now = 0; /* Direct i/o can't handle split blocks */
}
STps = &(STp->ps[STp->partition]);
if (cmd_in == MTWEOF &&
cmdstatp->have_sense &&
- (cmdstatp->flags & SENSE_EOM) &&
- (cmdstatp->sense_hdr.sense_key == NO_SENSE ||
- cmdstatp->sense_hdr.sense_key == RECOVERED_ERROR) &&
- undone == 0) {
- ioctl_result = 0; /* EOF written successfully at EOM */
- if (fileno >= 0)
- fileno++;
+ (cmdstatp->flags & SENSE_EOM)) {
+ if (cmdstatp->sense_hdr.sense_key == NO_SENSE ||
+ cmdstatp->sense_hdr.sense_key == RECOVERED_ERROR) {
+ ioctl_result = 0; /* EOF(s) written successfully at EOM */
+ STps->eof = ST_NOEOF;
+ } else { /* Writing EOF(s) failed */
+ if (fileno >= 0)
+ fileno -= undone;
+ if (undone < arg)
+ STps->eof = ST_NOEOF;
+ }
STps->drv_file = fileno;
- STps->eof = ST_NOEOF;
} else if ((cmd_in == MTFSF) || (cmd_in == MTFSFM)) {
if (fileno >= 0)
STps->drv_file = fileno - undone;
#endif
-static struct file_operations st_fops =
+static const struct file_operations st_fops =
{
.owner = THIS_MODULE,
.read = st_read,
if (err)
goto err_chrdev;
- err = do_create_driverfs_files();
+ err = do_create_sysfs_files();
if (err)
goto err_scsidrv;
static void __exit exit_st(void)
{
- do_remove_driverfs_files();
+ do_remove_sysfs_files();
scsi_unregister_driver(&st_template.gendrv);
unregister_chrdev_region(MKDEV(SCSI_TAPE_MAJOR, 0),
ST_MAX_TAPE_ENTRIES);
}
static DRIVER_ATTR(version, S_IRUGO, st_version_show, NULL);
-static int do_create_driverfs_files(void)
+static int do_create_sysfs_files(void)
{
- struct device_driver *driverfs = &st_template.gendrv;
+ struct device_driver *sysfs = &st_template.gendrv;
int err;
- err = driver_create_file(driverfs, &driver_attr_try_direct_io);
+ err = driver_create_file(sysfs, &driver_attr_try_direct_io);
if (err)
return err;
- err = driver_create_file(driverfs, &driver_attr_fixed_buffer_size);
+ err = driver_create_file(sysfs, &driver_attr_fixed_buffer_size);
if (err)
goto err_try_direct_io;
- err = driver_create_file(driverfs, &driver_attr_max_sg_segs);
+ err = driver_create_file(sysfs, &driver_attr_max_sg_segs);
if (err)
goto err_attr_fixed_buf;
- err = driver_create_file(driverfs, &driver_attr_version);
+ err = driver_create_file(sysfs, &driver_attr_version);
if (err)
goto err_attr_max_sg;
return 0;
err_attr_max_sg:
- driver_remove_file(driverfs, &driver_attr_max_sg_segs);
+ driver_remove_file(sysfs, &driver_attr_max_sg_segs);
err_attr_fixed_buf:
- driver_remove_file(driverfs, &driver_attr_fixed_buffer_size);
+ driver_remove_file(sysfs, &driver_attr_fixed_buffer_size);
err_try_direct_io:
- driver_remove_file(driverfs, &driver_attr_try_direct_io);
+ driver_remove_file(sysfs, &driver_attr_try_direct_io);
return err;
}
-static void do_remove_driverfs_files(void)
+static void do_remove_sysfs_files(void)
{
- struct device_driver *driverfs = &st_template.gendrv;
+ struct device_driver *sysfs = &st_template.gendrv;
- driver_remove_file(driverfs, &driver_attr_version);
- driver_remove_file(driverfs, &driver_attr_max_sg_segs);
- driver_remove_file(driverfs, &driver_attr_fixed_buffer_size);
- driver_remove_file(driverfs, &driver_attr_try_direct_io);
+ driver_remove_file(sysfs, &driver_attr_version);
+ driver_remove_file(sysfs, &driver_attr_max_sg_segs);
+ driver_remove_file(sysfs, &driver_attr_fixed_buffer_size);
+ driver_remove_file(sysfs, &driver_attr_try_direct_io);
}
projects / powerpc.git / blobdiff