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Finn Thain ae753a3387 ncr5380: Eliminate selecting state 
Linux v2.1.105 changed the algorithm for polling for the BSY signal
in NCR5380_select() and NCR5380_main().

Presently, this code has a bug. Back then, NCR5380_set_timer(hostdata, 1)
meant reschedule main() after sleeping for 10 ms. Repeated 25 times this
provided the recommended 250 ms selection time-out delay. This got broken
when HZ became configurable.

We could fix this but there's no need to reschedule the main loop. This
BSY polling presently happens when the NCR5380_main() work queue item
calls NCR5380_select(), which in turn schedules NCR5380_main(), which
calls NCR5380_select() again, and so on.

This algorithm is a deviation from the simpler one in atari_NCR5380.c.
The extra complexity and state is pointless. There's no reason to
stop selection half-way and return to to the main loop when the main
loop can do nothing useful until selection completes.

So just poll for BSY. We can sleep while polling now that we have a
suitable workqueue.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ondrej Zary <linux@rainbow-software.org>
Tested-by: Michael Schmitz <schmitzmic@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 		2016-01-06 21:42:56 -05:00
..
aacraid aacraid: aac_release_resources() can be static 2015-11-25 22:27:30 -05:00
aic7xxx scsi: use host wide tags by default 2015-11-09 17:11:57 -08:00
aic94xx scsi: Centralise ssp frame information units 2015-11-25 22:12:50 -05:00
arcmsr arcmsr: change driver version to v1.30.00.22-20151126 2015-11-30 18:51:20 -05:00
arm ncr5380: Introduce unbound workqueue 2016-01-06 21:42:56 -05:00
be2iscsi SCSI queue for 4.4. 2015-11-12 07:06:18 -05:00
bfa bfa: Update driver version to 3.2.25.0 2015-12-02 17:07:57 -05:00
bnx2fc bnx2fc: Update version number to 2.9.6. 2015-11-09 17:32:34 -08:00
bnx2i bnx2i: Fix call trace while device reset 2015-06-02 17:15:24 -07:00
csiostor scsi: use host wide tags by default 2015-11-09 17:11:57 -08:00
cxgbi drivers/scsi/cxgbi: fix build with EXTRA_CFLAGS 2015-11-09 15:11:24 -08:00
cxlflash cxlflash: Enable device id for future IBM CXL adapter 2016-01-06 20:58:29 -05:00
device_handler scsi_dh_alua: Remove stale variables 2015-12-07 20:11:25 -05:00
dpt
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esas2r scsi: use host wide tags by default 2015-11-09 17:11:57 -08:00
fcoe scsi: use host wide tags by default 2015-11-09 17:11:57 -08:00
fnic scsi: use host wide tags by default 2015-11-09 17:11:57 -08:00
hisi_sas hisi_sas: use platform_get_irq() 2015-12-16 22:32:37 -05:00
ibmvscsi SCSI queue for 4.4. 2015-11-12 07:06:18 -05:00
isci SCSI queue for 4.4. 2015-11-12 07:06:18 -05:00
libfc libfc: Use the correct function name in kernel-doc comment. 2015-11-09 17:15:52 -08:00
libsas Merge branch 'for-4.0-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata 2015-03-24 17:08:29 -07:00
lpfc lpfc: Update version to 11.0.0.10 for upstream patch set 2015-12-21 22:08:49 -05:00
megaraid SCSI queue for 4.4. 2015-11-12 07:06:18 -05:00
mpt3sas mpt3sas: A correction in unmap_resources 2016-01-06 15:10:37 -05:00
mvsas mvsas: Add SGPIO support to Marvell 94xx 2016-01-06 15:18:49 -05:00
osd osd: fix signed char versus %02x issue 2015-12-10 13:14:56 -05:00
pcmcia scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
pm8001 SCSI queue for 4.4. 2015-11-12 07:06:18 -05:00
qla2xxx qla2xxx: Remove unavailable firmware files 2015-11-18 12:03:29 -05:00
qla4xxx SCSI misc on 20151113 2015-11-13 20:35:54 -08:00
snic SCSI misc on 20151113 2015-11-13 20:35:54 -08:00
sym53c8xx_2 scsi: drop reason argument from ->change_queue_depth 2014-11-24 14:45:27 +01:00
ufs scsi: ufs: fix spelling mistake in error message 2015-11-30 20:52:33 -05:00
.gitignore
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3w-9xxx.c 3w-9xxx: don't unmap bounce buffered commands 2015-10-07 10:24:48 -07:00
3w-9xxx.h 3w-9xxx: fix command completion race 2015-04-27 10:10:19 -07:00
3w-sas.c 3w-sas: fix command completion race 2015-04-27 10:04:39 -07:00
3w-sas.h 3w-sas: fix command completion race 2015-04-27 10:04:39 -07:00
3w-xxxx.c 3w-xxxx: fix command completion race 2015-04-27 10:05:55 -07:00
3w-xxxx.h 3w-xxxx: fix command completion race 2015-04-27 10:05:55 -07:00
53c700.c scsi: use host wide tags by default 2015-11-09 17:11:57 -08:00
53c700.h
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53c700.scr
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53c700_d.h_shipped
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BusLogic.c scsi: replace seq_printf with seq_puts 2015-02-02 09:57:45 -08:00
BusLogic.h [SCSI] BusLogic: Port driver to 64-bit. 2013-06-26 18:32:47 -07:00
FlashPoint.c FlashPoint: fix build warning 2015-11-09 16:32:14 -08:00
Kconfig atari_NCR5380: Remove RESET_BOOT, CONFIG_ATARI_SCSI_TOSHIBA_DELAY and CONFIG_ATARI_SCSI_RESET_BOOT 2016-01-06 21:42:53 -05:00
Makefile hisi_sas: Add initial bare main driver 2015-11-25 22:12:51 -05:00
NCR53c406a.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
NCR5380.c ncr5380: Eliminate selecting state 2016-01-06 21:42:56 -05:00
NCR5380.h ncr5380: Eliminate selecting state 2016-01-06 21:42:56 -05:00
NCR_D700.c
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NCR_D700.h
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NCR_Q720.c
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NCR_Q720.h
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a100u2w.c scsi: a100u2w: trivial typo in printk 2015-08-07 15:03:42 +02:00
a100u2w.h
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a2091.c zorro: ZTWO_VADDR() should return "void __iomem *" 2013-11-26 11:09:07 +01:00
a2091.h
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a3000.c scsi: drop owner assignment from platform_drivers 2014-10-20 16:21:33 +02:00
a3000.h
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a4000t.c scsi: drop owner assignment from platform_drivers 2014-10-20 16:21:33 +02:00
advansys.c scsi: use host wide tags by default 2015-11-09 17:11:57 -08:00
aha152x.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
aha152x.h
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aha1542.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
aha1542.h aha1542: fix include guard and remove useless changelog 2015-04-09 18:08:31 -07:00
aha1740.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
aha1740.h scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
am53c974.c am53c974: Fix crash during modprobe 2015-04-17 10:13:56 -07:00
atari_NCR5380.c ncr5380: Eliminate selecting state 2016-01-06 21:42:56 -05:00
atari_scsi.c ncr5380: Introduce unbound workqueue 2016-01-06 21:42:56 -05:00
atp870u.c atp870u: Introduce atp870_init() 2015-11-25 22:08:55 -05:00
atp870u.h atp870u: Remove scam_on from struct atp_unit 2015-11-25 22:08:52 -05:00
bvme6000_scsi.c scsi: drop owner assignment from platform_drivers 2014-10-20 16:21:33 +02:00
ch.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2015-04-14 09:50:27 -07:00
constants.c scsi: Conditionally compile in constants.c 2015-01-09 15:44:31 +01:00
dc395x.c scsi: print single-character strings with seq_putc 2015-02-02 09:57:46 -08:00
dc395x.h
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dmx3191d.c ncr5380: Introduce unbound workqueue 2016-01-06 21:42:56 -05:00
dpt_i2o.c x86/vm86: Clean up vm86.h includes 2015-07-31 13:31:10 +02:00
dpti.h scsi: use 64-bit LUNs 2014-07-17 22:07:37 +02:00
dtc.c ncr5380: Introduce unbound workqueue 2016-01-06 21:42:56 -05:00
dtc.h ncr5380: Remove NCR5380_local_declare and NCR5380_setup macros 2016-01-06 21:42:52 -05:00
eata.c scsi: drop reason argument from ->change_queue_depth 2014-11-24 14:45:27 +01:00
eata_generic.h
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eata_pio.c scsi: replace seq_printf with seq_puts 2015-02-02 09:57:45 -08:00
eata_pio.h
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esp_scsi.c scsi: use host wide tags by default 2015-11-09 17:11:57 -08:00
esp_scsi.h esp_scsi: correctly detect am53c974 2014-11-24 16:13:16 +01:00
fdomain.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
fdomain.h
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g_NCR5380.c ncr5380: Introduce unbound workqueue 2016-01-06 21:42:56 -05:00
g_NCR5380.h ncr5380: Move NCR53C400-specific code 2016-01-06 21:42:52 -05:00
g_NCR5380_mmio.c
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gdth.c scsi: rename SERVICE_ACTION_IN to SERVICE_ACTION_IN_16 2014-11-24 20:01:40 +01:00
gdth.h
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gdth_ioctl.h
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gdth_proc.c scsi: replace seq_printf with seq_puts 2015-02-02 09:57:45 -08:00
gdth_proc.h
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gvp11.c zorro: ZTWO_VADDR() should return "void __iomem *" 2013-11-26 11:09:07 +01:00
gvp11.h
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hosts.c scsi: use host wide tags by default 2015-11-09 17:11:57 -08:00
hpsa.c hpsa: Add box and bay information for enclosure devices 2016-01-06 15:10:36 -05:00
hpsa.h hpsa: Change SAS transport devices to bus 0. 2016-01-06 15:10:35 -05:00
hpsa_cmd.h hpsa: Add box and bay information for enclosure devices 2016-01-06 15:10:36 -05:00
hptiop.c hptiop: Support HighPoint RR36xx HBAs and Support SAS tape and SAS media changer 2015-08-12 13:14:57 -07:00
hptiop.h hptiop: Support HighPoint RR36xx HBAs and Support SAS tape and SAS media changer 2015-08-12 13:14:57 -07:00
imm.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
imm.h
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in2000.c scsi: print single-character strings with seq_putc 2015-02-02 09:57:46 -08:00
in2000.h
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initio.c SCSI: initio: remove duplicate module device table 2015-11-20 11:39:03 -05:00
initio.h
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ipr.c SCSI queue for 4.4. 2015-11-12 07:06:18 -05:00
ipr.h ipr: Driver version 2.6.3. 2015-11-09 19:32:41 -05:00
ips.c ips: remove pointless #warning 2015-06-02 17:24:54 -07:00
ips.h
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iscsi_boot_sysfs.c [SCSI] iscsi_boot_sysfs: Fix a memory leak in iscsi_boot_destroy_kset() 2014-03-15 10:19:19 -07:00
iscsi_tcp.c scsi: drop reason argument from ->change_queue_depth 2014-11-24 14:45:27 +01:00
iscsi_tcp.h net: Fix use after free by removing length arg from sk_data_ready callbacks. 2014-04-11 16:15:36 -04:00
jazz_esp.c scsi: drop owner assignment from platform_drivers 2014-10-20 16:21:33 +02:00
lasi700.c
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libiscsi.c libiscsi: Fix iscsi_check_transport_timeouts possible infinite loop 2015-09-17 07:25:02 -07:00
libiscsi_tcp.c [SCSI] libiscsi: Reduce locking contention in fast path 2014-03-15 10:19:18 -07:00
mac53c94.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
mac53c94.h
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mac_esp.c scsi: drop owner assignment from platform_drivers 2014-10-20 16:21:33 +02:00
mac_scsi.c ncr5380: Introduce unbound workqueue 2016-01-06 21:42:56 -05:00
megaraid.c megaraid : use dev_printk when possible 2015-08-26 07:23:04 -07:00
megaraid.h [SCSI] megaraid: simplify internal command handling 2014-03-27 08:26:31 -07:00
mesh.c powerpc: Move Power Macintosh drivers to generic byteswappers 2015-03-23 14:29:40 +11:00
mesh.h
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mvme16x_scsi.c scsi: drop owner assignment from platform_drivers 2014-10-20 16:21:33 +02:00
mvme147.c
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mvme147.h
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mvumi.c mvumi: 64bit value for seconds_since1970 2015-11-11 20:45:23 -05:00
mvumi.h
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ncr53c8xx.c scsi: drop reason argument from ->change_queue_depth 2014-11-24 14:45:27 +01:00
ncr53c8xx.h scsi: Remove CONFIG_SCSI_MULTI_LUN 2014-07-17 22:07:35 +02:00
nsp32.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
nsp32.h
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nsp32_debug.c
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nsp32_io.h
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osst.c scsi: remove scsi_driver owner field 2014-11-24 20:01:28 +01:00
osst.h
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osst_detect.h
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osst_options.h
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pas16.c ncr5380: Introduce unbound workqueue 2016-01-06 21:42:56 -05:00
pas16.h ncr5380: Remove NCR5380_local_declare and NCR5380_setup macros 2016-01-06 21:42:52 -05:00
pmcraid.c SCSI queue for 4.4. 2015-11-12 07:06:18 -05:00
pmcraid.h
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ppa.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
ppa.h
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ps3rom.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
qla1280.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
qla1280.h
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qlogicfas.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
qlogicfas408.c
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qlogicfas408.h
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qlogicpti.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
qlogicpti.h
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raid_class.c
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script_asm.pl
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scsi.c scsi: rescan VPD attributes 2015-11-30 11:23:45 -05:00
scsi.h
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scsi_common.c scsi: Protect against buffer possible overflow in scsi_set_sense_information 2015-07-23 22:53:05 -07:00
scsi_debug.c scsi_debug: Increase the reported optimal transfer length 2015-12-21 22:14:47 -05:00
scsi_devinfo.c SCSI: fix bug in scsi_dev_info_list matching 2015-10-27 11:09:41 +09:00
scsi_dh.c scsi_dh: move 'dh_state' sysfs attribute to generic code 2015-12-02 16:29:19 -05:00
scsi_error.c mm, page_alloc: rename __GFP_WAIT to __GFP_RECLAIM 2015-11-06 17:50:42 -08:00
scsi_ioctl.c scsi: return EAGAIN when resetting a device under EH 2014-11-12 11:16:12 +01:00
scsi_lib.c scsi: Add scsi_vpd_tpg_id() 2015-12-02 16:43:11 -05:00
scsi_lib_dma.c
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scsi_logging.c scsi_logging: return void for dev_printk() functions 2015-02-04 08:00:24 -08:00
scsi_logging.h scsi: simplify scsi_log_(send|completion) 2014-11-12 11:16:05 +01:00
scsi_module.c
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scsi_netlink.c net: Use netlink_ns_capable to verify the permisions of netlink messages 2014-04-24 13:44:54 -04:00
scsi_pm.c SCSI: Fix NULL pointer dereference in runtime PM 2015-08-18 08:14:14 -07:00
scsi_priv.h scsi_dh: move 'dh_state' sysfs attribute to generic code 2015-12-02 16:29:19 -05:00
scsi_proc.c scsi: print single-character strings with seq_putc 2015-02-02 09:57:46 -08:00
scsi_sas_internal.h
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scsi_scan.c scsi: rescan VPD attributes 2015-11-30 11:23:45 -05:00
scsi_sysctl.c scsi: convert use of typedef ctl_table to struct ctl_table 2014-06-06 16:08:16 -07:00
scsi_sysfs.c scsi: export 'wwid' to sysfs 2015-12-02 16:42:13 -05:00
scsi_trace.c scsi: print single-character strings with seq_putc 2015-02-02 09:57:46 -08:00
scsi_transport_api.h
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scsi_transport_fc.c scsi_transport_fc: Introduce scsi_host_{get,put}() 2015-11-30 17:43:55 -05:00
scsi_transport_iscsi.c SCSI misc on 20150901 2015-09-02 12:22:54 -07:00
scsi_transport_sas.c scsi_transport_sas: Remove check for SAS expander when querying bay/enclosure IDs. 2015-09-06 11:13:41 -07:00
scsi_transport_spi.c [SCSI] Fix printk typos in drivers/scsi 2015-08-07 14:28:45 +02:00
scsi_transport_srp.c IB/srp: Avoid using uninitialized variable 2015-07-14 13:20:09 -04:00
scsi_typedefs.h
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scsicam.c scsi: PC partition tables are little endian 2014-11-12 11:15:54 +01:00
sd.c SCSI misc on 20151113 2015-11-13 20:35:54 -08:00
sd.h scsi: introduce sdev_prefix_printk() 2014-11-12 11:15:57 +01:00
sd_dif.c block: Consolidate static integrity profile properties 2015-10-21 14:42:38 -06:00
ses.c scsi: rescan VPD attributes 2015-11-30 11:23:45 -05:00
sg.c sg: Fix double-free when drives detach during SG_IO 2015-11-02 23:51:25 -05:00
sgiwd93.c scsi: drop owner assignment from platform_drivers 2014-10-20 16:21:33 +02:00
sim710.c
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sni_53c710.c scsi: drop owner assignment from platform_drivers 2014-10-20 16:21:33 +02:00
sr.c scsi: remove scsi_driver owner field 2014-11-24 20:01:28 +01:00
sr.h scsi: introduce sdev_prefix_printk() 2014-11-12 11:15:57 +01:00
sr_ioctl.c sr: reduce debug noise in sr_do_ioctl 2015-01-20 19:43:24 +01:00
sr_vendor.c scsi: Implement sr_printk() 2014-07-17 22:07:39 +02:00
st.c st: allow debug output to be enabled or disabled via sysfs 2015-11-09 17:17:27 -08:00
st.h st: Remove obsolete scsi_tape.max_pfn 2015-11-18 11:59:09 -05:00
st_options.h
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stex.c stex: Remove use of struct timeval 2015-11-09 17:42:19 -08:00
storvsc_drv.c storvsc: Tighten up the interrupt path 2016-01-06 15:56:17 -05:00
sun3_scsi.c ncr5380: Introduce unbound workqueue 2016-01-06 21:42:56 -05:00
sun3_scsi.h sun3_scsi: Move macro definitions 2014-11-20 09:11:15 +01:00
sun3_scsi_vme.c scsi/NCR5380: merge sun3_scsi_vme.c into sun3_scsi.c 2014-05-28 12:16:28 +02:00
sun3x_esp.c arch, drivers: don't include <asm/io.h> directly, use <linux/io.h> instead 2015-08-10 23:07:05 -04:00
sun_esp.c scsi: drop owner assignment from platform_drivers 2014-10-20 16:21:33 +02:00
sym53c416.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
sym53c416.h
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t128.c ncr5380: Introduce unbound workqueue 2016-01-06 21:42:56 -05:00
t128.h ncr5380: Remove NCR5380_local_declare and NCR5380_setup macros 2016-01-06 21:42:52 -05:00
u14-34f.c scsi: drop reason argument from ->change_queue_depth 2014-11-24 14:45:27 +01:00
ultrastor.c
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ultrastor.h
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virtio_scsi.c virtio/vhost: fixes for 4.2 2015-07-23 13:07:04 -07:00
vmw_pvscsi.c VMW_PVSCSI: Fix the issue of DMA-API related warnings. 2015-12-10 12:57:04 -05:00
vmw_pvscsi.h VMW_PVSCSI: Fix the issue of DMA-API related warnings. 2015-12-10 12:57:04 -05:00
wd33c93.c scsi: print single-character strings with seq_putc 2015-02-02 09:57:46 -08:00
wd33c93.h
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wd719x.c [SCSI] Fix printk typos in drivers/scsi 2015-08-07 14:28:45 +02:00
wd719x.h scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
wd7000.c scsi: replace seq_printf with seq_puts 2015-02-02 09:57:45 -08:00
xen-scsifront.c xen: Use correctly the Xen memory terminologies 2015-09-08 18:03:49 +01:00
zalon.c
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zorro7xx.c zorro: ZTWO_VADDR() should return "void __iomem *" 2013-11-26 11:09:07 +01:00