original_kernel/drivers/scsi
Can Guo 05d18ae1cc scsi: pm: Balance pm_only counter of request queue during system resume
During system resume, scsi_resume_device() decreases a request queue's
pm_only counter if the scsi device was quiesced before. But after that, if
the scsi device's RPM status is RPM_SUSPENDED, the pm_only counter is still
held (non-zero). Current SCSI resume hook only sets the RPM status of the
scsi_device and its request queue to RPM_ACTIVE, but leaves the pm_only
counter unchanged. This may make the request queue's pm_only counter remain
non-zero after resume hook returns, hence those who are waiting on the
mq_freeze_wq would never be woken up. Fix this by calling
blk_post_runtime_resume() if a sdev's RPM status was RPM_SUSPENDED.

(struct request_queue)0xFFFFFF815B69E938
	pm_only = (counter = 2),
	rpm_status = 0,
	dev = 0xFFFFFF815B0511A0,

((struct device)0xFFFFFF815B0511A0)).power
	is_suspended = FALSE,
	runtime_status = RPM_ACTIVE,

(struct scsi_device)0xffffff815b051000
	request_queue = 0xFFFFFF815B69E938,
	sdev_state = SDEV_RUNNING,
	quiesced_by = 0x0,

B::v.f_/task_0xFFFFFF810C246940
-000|__switch_to(prev = 0xFFFFFF810C246940, next = 0xFFFFFF80A49357C0)
-001|context_switch(inline)
-001|__schedule(?)
-002|schedule()
-003|blk_queue_enter(q = 0xFFFFFF815B69E938, flags = 0)
-004|generic_make_request(?)
-005|submit_bio(bio = 0xFFFFFF80A8195B80)

Link: https://lore.kernel.org/r/1588740936-28846-1-git-send-email-cang@codeaurora.org
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Can Guo <cang@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-05-11 19:43:25 -04:00
..
aacraid SCSI misc on 20200410 2020-04-10 12:21:11 -07:00
aic7xxx SCSI misc on 20200410 2020-04-10 12:21:11 -07:00
aic94xx
arcmsr SCSI misc on 20200402 2020-04-02 17:03:53 -07:00
arm
be2iscsi
bfa
bnx2fc scsi: bnx2fc: fix boolreturn.cocci warnings 2020-03-31 22:35:02 -04:00
bnx2i
csiostor
cxgbi
cxlflash
device_handler
dpt
esas2r
fcoe
fnic
hisi_sas scsi: hisi_sas: Fix build error without SATA_HOST 2020-04-13 13:28:13 -04:00
ibmvscsi scsi: ibmvscsi: Fix WARN_ON during event pool release 2020-04-28 22:59:55 -04:00
ibmvscsi_tgt
isci SCSI misc on 20200402 2020-04-02 17:03:53 -07:00
libfc SCSI misc on 20200410 2020-04-10 12:21:11 -07:00
libsas
lpfc SCSI misc on 20200410 2020-04-10 12:21:11 -07:00
megaraid SCSI misc on 20200402 2020-04-02 17:03:53 -07:00
mpt3sas scsi: mpt3sas: Fix kernel panic observed on soft HBA unplug 2020-03-31 22:02:37 -04:00
mvsas
pcmcia
pm8001
qedf
qedi
qla2xxx scsi: qla2xxx: Do not log message when reading port speed via sysfs 2020-05-11 19:42:36 -04:00
qla4xxx
smartpqi
snic
sym53c8xx_2
ufs SCSI misc on 20200410 2020-04-10 12:21:11 -07:00
.gitignore
3w-9xxx.c
3w-9xxx.h
3w-sas.c
3w-sas.h
3w-xxxx.c
3w-xxxx.h
53c700.c
53c700.h
53c700.scr
53c700_d.h_shipped
BusLogic.c SCSI misc on 20200402 2020-04-02 17:03:53 -07:00
BusLogic.h
FlashPoint.c
Kconfig scsi: Update referenced link to cdrtools 2020-04-14 21:16:16 -04:00
Makefile
NCR5380.c
NCR5380.h
a100u2w.c
a100u2w.h
a2091.c
a2091.h
a3000.c
a3000.h
a4000t.c
advansys.c
aha152x.c
aha152x.h
aha1542.c
aha1542.h
aha1740.c
aha1740.h
am53c974.c
atari_scsi.c
atp870u.c
atp870u.h
bvme6000_scsi.c
ch.c
constants.c scsi: core: Add DID_ALLOC_FAILURE and DID_MEDIUM_ERROR to hostbyte_table 2020-04-01 22:03:04 -04:00
dc395x.c
dc395x.h
dmx3191d.c
dpt_i2o.c
dpti.h
esp_scsi.c
esp_scsi.h
fdomain.c
fdomain.h
fdomain_isa.c
fdomain_pci.c
g_NCR5380.c
gdth.c
gdth.h
gdth_ioctl.h
gdth_proc.c
gdth_proc.h
gvp11.c
gvp11.h
hosts.c
hpsa.c
hpsa.h
hpsa_cmd.h
hptiop.c
hptiop.h
imm.c
imm.h
initio.c
initio.h
ipr.c SCSI misc on 20200402 2020-04-02 17:03:53 -07:00
ipr.h SCSI misc on 20200402 2020-04-02 17:03:53 -07:00
ips.c
ips.h
iscsi_boot_sysfs.c
iscsi_tcp.c
iscsi_tcp.h
jazz_esp.c
lasi700.c
libiscsi.c
libiscsi_tcp.c
mac53c94.c
mac53c94.h
mac_esp.c
mac_scsi.c
megaraid.c
megaraid.h
mesh.c
mesh.h
mvme16x_scsi.c
mvme147.c
mvme147.h
mvumi.c
mvumi.h
myrb.c
myrb.h
myrs.c
myrs.h
ncr53c8xx.c
ncr53c8xx.h
nsp32.c
nsp32.h
nsp32_debug.c
nsp32_io.h
pmcraid.c
pmcraid.h
ppa.c
ppa.h
ps3rom.c
qla1280.c
qla1280.h
qlogicfas.c
qlogicfas408.c
qlogicfas408.h
qlogicpti.c
qlogicpti.h
raid_class.c
script_asm.pl
scsi.c
scsi.h
scsi_common.c
scsi_debug.c
scsi_debugfs.c
scsi_debugfs.h
scsi_devinfo.c
scsi_dh.c
scsi_error.c
scsi_ioctl.c
scsi_lib.c scsi: core: Allow the state change from SDEV_QUIESCE to SDEV_BLOCK 2020-04-21 23:44:26 -04:00
scsi_lib_dma.c
scsi_logging.c
scsi_logging.h
scsi_netlink.c
scsi_pm.c scsi: pm: Balance pm_only counter of request queue during system resume 2020-05-11 19:43:25 -04:00
scsi_priv.h
scsi_proc.c
scsi_sas_internal.h
scsi_scan.c
scsi_sysctl.c
scsi_sysfs.c
scsi_trace.c
scsi_transport_api.h
scsi_transport_fc.c
scsi_transport_iscsi.c scsi: iscsi: Report unbind session event when the target has been removed 2020-03-31 21:39:58 -04:00
scsi_transport_sas.c
scsi_transport_spi.c
scsi_transport_srp.c
scsicam.c
sd.c for-5.7/block-2020-03-29 2020-03-30 11:20:13 -07:00
sd.h
sd_dif.c
sd_zbc.c
sense_codes.h
ses.c
sg.c scsi: sg: add sg_remove_request in sg_write 2020-04-14 21:15:53 -04:00
sgiwd93.c
sim710.c
sni_53c710.c
sr.c SCSI misc on 20200410 2020-04-10 12:21:11 -07:00
sr.h
sr_ioctl.c
sr_vendor.c
st.c
st.h
st_options.h
stex.c
storvsc_drv.c
sun3_scsi.c
sun3_scsi_vme.c
sun3x_esp.c
sun_esp.c
virtio_scsi.c
vmw_pvscsi.c
vmw_pvscsi.h
wd33c93.c
wd33c93.h
wd719x.c
wd719x.h
xen-scsifront.c
zalon.c
zorro7xx.c
zorro_esp.c