828 static int set_mode_densblk(struct scsi_tape * STp, struct st_modedef * STm)  in set_mode_densblk()  argument
834 	    STm->default_density >= 0 &&  in set_mode_densblk()
835 	    STm->default_density != STp->density) {  in set_mode_densblk()
836 		arg = STm->default_density;  in set_mode_densblk()
842 	    STm->default_blksize >= 0 &&  in set_mode_densblk()
843 	    STm->default_blksize != STp->block_size) {  in set_mode_densblk()
844 		arg |= STm->default_blksize;  in set_mode_densblk()
853 			  STm->default_blksize, STm->default_density);  in set_mode_densblk()
991 	struct st_modedef *STm;  in check_tape()  local
1004 	STm = &(STp->modes[STp->current_mode]);  in check_tape()
1170 		if (!(STm->defaults_for_writes) &&  in check_tape()
1171 		    (retval = set_mode_densblk(STp, STm)) < 0)  in check_tape()
1292 	struct st_modedef *STm = &(STp->modes[STp->current_mode]);  in st_flush()  local
1367 		if (!STm->sysv || STps->rw != ST_READING) {  in st_flush()
1577 	struct st_modedef *STm;  in st_write()  local
1596 	STm = &(STp->modes[STp->current_mode]);  in st_write()
1612 		if ((retval = set_mode_densblk(STp, STm)) < 0)  in st_write()
1614 		if (STm->default_compression != ST_DONT_TOUCH &&  in st_write()
1616 			if (st_compression(STp, (STm->default_compression == ST_YES))) {  in st_write()
1694 			STm->do_async_writes && STps->eof < ST_EOM_OK;  in st_write()
1696 		if (STp->block_size != 0 && STm->do_buffer_writes &&  in st_write()
1851 	struct st_modedef *STm;  in read_tape()  local
1859 	STm = &(STp->modes[STp->current_mode]);  in read_tape()
1868 		if (!(STp->try_dio_now && try_rdio) && STm->do_read_ahead) {  in read_tape()
2046 	struct st_modedef *STm;  in st_read()  local
2057 	STm = &(STp->modes[STp->current_mode]);  in st_read()
2059 		if (!STm->do_read_ahead) {  in st_read()
2187 static void st_log_options(struct scsi_tape * STp, struct st_modedef * STm)  in DEB()
2193 			  STp->current_mode, STm->do_buffer_writes,  in DEB()
2194 			  STm->do_async_writes, STm->do_read_ahead);  in DEB()
2203 			  STm->defaults_for_writes, STp->omit_blklims,  in DEB()
2208 			  STm->sysv, STp->immediate, STp->sili,  in DEB()
2220 	struct st_modedef *STm;  local
2224 	STm = &(STp->modes[STp->current_mode]);
2225 	if (!STm->defined) {
2226 		cd0 = STm->cdevs[0];
2227 		cd1 = STm->cdevs[1];
2228 		d0  = STm->devs[0];
2229 		d1  = STm->devs[1];
2230 		memcpy(STm, &(STp->modes[0]), sizeof(struct st_modedef));
2231 		STm->cdevs[0] = cd0;
2232 		STm->cdevs[1] = cd1;
2233 		STm->devs[0]  = d0;
2234 		STm->devs[1]  = d1;
2242 		STm->do_buffer_writes = (options & MT_ST_BUFFER_WRITES) != 0;
2243 		STm->do_async_writes = (options & MT_ST_ASYNC_WRITES) != 0;
2244 		STm->defaults_for_writes = (options & MT_ST_DEF_WRITES) != 0;
2245 		STm->do_read_ahead = (options & MT_ST_READ_AHEAD) != 0;
2256 		STm->sysv = (options & MT_ST_SYSV) != 0;
2259 		     st_log_options(STp, STm); )
2263 			STm->do_buffer_writes = value;
2265 			STm->do_async_writes = value;
2267 			STm->defaults_for_writes = value;
2269 			STm->do_read_ahead = value;
2290 			STm->sysv = value;
2296 			st_log_options(STp, STm); )
2302 			STm->default_blksize = (-1);
2305 			STm->default_blksize = value;
2307 				    "%d bytes.\n", STm->default_blksize);
2310 				set_mode_densblk(STp, STm);
2342 				STm->default_density = (-1);
2346 				STm->default_density = value & 0xff;
2348 					    STm->default_density);
2351 					set_mode_densblk(STp, STm);
2369 				STm->default_compression = ST_DONT_TOUCH;
2380 					STm->default_compression = (value & 1 ? ST_YES : ST_NO);
2386 						st_compression(STp, (STm->default_compression == ST_YES));
3355 	struct st_modedef *STm;  in st_ioctl()  local
3369 	STm = &(STp->modes[STp->current_mode]);  in st_ioctl()
3406 		if (!STm->defined &&  in st_ioctl()
3571 	if (!STm->defined) {  in st_ioctl()
3637 		if (STm->do_async_writes ||  in st_ioctl()
3638                     (STm->do_buffer_writes && STp->block_size != 0) ||  in st_ioctl()
4018 	struct st_modedef *STm = &(tape->modes[mode]);  in create_one_cdev()  local
4040 	STm->cdevs[rew] = cdev;  in create_one_cdev()
4054 	STm->devs[rew] = dev;  in create_one_cdev()
4058 	cdev_del(STm->cdevs[rew]);  in create_one_cdev()
4059 	STm->cdevs[rew] = NULL;  in create_one_cdev()
4085 		struct st_modedef *STm = &(tape->modes[mode]);  in remove_cdevs()  local
4087 			if (STm->cdevs[rew])  in remove_cdevs()
4088 				cdev_del(STm->cdevs[rew]);  in remove_cdevs()
4089 			if (STm->devs[rew])  in remove_cdevs()
4090 				device_unregister(STm->devs[rew]);  in remove_cdevs()
4100 	struct st_modedef *STm;  in st_probe()  local
4184 		STm = &(tpnt->modes[i]);  in st_probe()
4185 		STm->defined = 0;  in st_probe()
4186 		STm->sysv = ST_SYSV;  in st_probe()
4187 		STm->defaults_for_writes = 0;  in st_probe()
4188 		STm->do_async_writes = ST_ASYNC_WRITES;  in st_probe()
4189 		STm->do_buffer_writes = ST_BUFFER_WRITES;  in st_probe()
4190 		STm->do_read_ahead = ST_READ_AHEAD;  in st_probe()
4191 		STm->default_compression = ST_DONT_TOUCH;  in st_probe()
4192 		STm->default_blksize = (-1);	/* No forced size */  in st_probe()
4193 		STm->default_density = (-1);	/* No forced density */  in st_probe()
4194 		STm->tape = tpnt;  in st_probe()
4441 	struct st_modedef *STm = dev_get_drvdata(dev);  in defined_show()  local
4444 	l = snprintf(buf, PAGE_SIZE, "%d\n", STm->defined);  in defined_show()
4453 	struct st_modedef *STm = dev_get_drvdata(dev);  in default_blksize_show()  local
4456 	l = snprintf(buf, PAGE_SIZE, "%d\n", STm->default_blksize);  in default_blksize_show()
4465 	struct st_modedef *STm = dev_get_drvdata(dev);  in default_density_show()  local
4469 	fmt = STm->default_density >= 0 ? "0x%02x\n" : "%d\n";  in default_density_show()
4470 	l = snprintf(buf, PAGE_SIZE, fmt, STm->default_density);  in default_density_show()
4479 	struct st_modedef *STm = dev_get_drvdata(dev);  in default_compression_show()  local
4482 	l = snprintf(buf, PAGE_SIZE, "%d\n", STm->default_compression - 1);  in default_compression_show()
4490 	struct st_modedef *STm = dev_get_drvdata(dev);  in options_show()  local
4491 	struct scsi_tape *STp = STm->tape;  in options_show()
4495 	options = STm->do_buffer_writes ? MT_ST_BUFFER_WRITES : 0;  in options_show()
4496 	options |= STm->do_async_writes ? MT_ST_ASYNC_WRITES : 0;  in options_show()
4497 	options |= STm->do_read_ahead ? MT_ST_READ_AHEAD : 0;  in options_show()
4501 	options |= STm->defaults_for_writes ? MT_ST_DEF_WRITES : 0;  in options_show()
4506 	options |= STm->sysv ? MT_ST_SYSV : 0;  in options_show()