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linux/drivers/scsi
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Matt Fleming 739230186f efi: Make 'efi_enabled' a function to query EFI facilities 
commit 83e6818974 upstream.

Originally 'efi_enabled' indicated whether a kernel was booted from
EFI firmware. Over time its semantics have changed, and it now
indicates whether or not we are booted on an EFI machine with
bit-native firmware, e.g. 64-bit kernel with 64-bit firmware.

The immediate motivation for this patch is the bug report at,

    https://bugs.launchpad.net/ubuntu-cdimage/+bug/1040557

which details how running a platform driver on an EFI machine that is
designed to run under BIOS can cause the machine to become
bricked. Also, the following report,

    https://bugzilla.kernel.org/show_bug.cgi?id=47121

details how running said driver can also cause Machine Check
Exceptions. Drivers need a new means of detecting whether they're
running on an EFI machine, as sadly the expression,

    if (!efi_enabled)

hasn't been a sufficient condition for quite some time.

Users actually want to query 'efi_enabled' for different reasons -
what they really want access to is the list of available EFI
facilities.

For instance, the x86 reboot code needs to know whether it can invoke
the ResetSystem() function provided by the EFI runtime services, while
the ACPI OSL code wants to know whether the EFI config tables were
mapped successfully. There are also checks in some of the platform
driver code to simply see if they're running on an EFI machine (which
would make it a bad idea to do BIOS-y things).

This patch is a prereq for the samsung-laptop fix patch.

Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Corentin Chary <corentincj@iksaif.net>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: Olof Johansson <olof@lixom.net>
Cc: Peter Jones <pjones@redhat.com>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: Steve Langasek <steve.langasek@canonical.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Konrad Rzeszutek Wilk <konrad@kernel.org>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-14 10:48:53 -08:00
..
aacraid [SCSI] aacraid: Added Sync.mode to support series 7/8/9 controllers 2012-02-19 08:09:01 -06:00
aic7xxx Documentation: remove references to /etc/modprobe.conf 2012-03-30 16:03:15 -07:00
aic7xxx_old Fix common misspellings 2011-03-31 11:26:23 -03:00
aic94xx SCSI: libsas: fix taskfile corruption in sas_ata_qc_fill_rtf 2012-07-16 09:04:37 -07:00
arcmsr Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
arm Disintegrate and delete asm/system.h 2012-03-28 15:58:21 -07:00
be2iscsi SCSI updates for post 3.2 merge window 2012-01-10 10:36:08 -08:00
bfa [SCSI] bfa: Update the driver version to 3.0.23.0 2012-03-28 10:02:46 +01:00
bnx2fc SCSI updates on 20120331 2012-03-31 13:31:23 -07:00
bnx2i SCSI: bnx2i: Fixed NULL ptr deference for 1G bnx2 Linux iSCSI offload 2012-10-02 10:30:07 -07:00
cxgbi SCSI updates on 20120319 2012-03-22 12:55:29 -07:00
device_handler SCSI: scsi_dh_alua: Enable STPG for unavailable ports 2012-10-07 08:32:29 -07:00
dpt atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
fcoe SCSI updates on 20120331 2012-03-31 13:31:23 -07:00
fnic [SCSI] fnic: fix incorrect use of SLAB_CACHE_DMA flag 2011-06-29 16:05:41 -05:00
ibmvscsi SCSI: ibmvscsi: Fix host config length field overflow 2012-10-07 08:32:28 -07:00
isci efi: Make 'efi_enabled' a function to query EFI facilities 2013-02-14 10:48:53 -08:00
libfc [SCSI] libfc: update mfs boundry checking 2012-04-25 08:46:29 +01:00
libsas SCSI: libsas: fix sas_discover_devices return code handling 2012-08-09 08:31:27 -07:00
lpfc SCSI: lpfc: fix problems with -Werror 2012-10-02 10:30:07 -07:00
megaraid SCSI: megaraid_sas: Move poll_aen_lock initializer 2012-09-14 10:00:23 -07:00
mpt2sas SCSI: mpt2sas: Fix for issue - Unable to boot from the drive connected to HBA 2012-10-02 10:30:07 -07:00
mvsas SCSI: mvsas: fix undefined bit shift 2013-01-17 08:50:44 -08:00
osd [SCSI] osd_uld: Bump MAX_OSD_DEVICES from 64 to 1,048,576 2012-02-25 08:25:09 -06:00
pcmcia module_param: make bool parameters really bool (drivers & misc) 2012-01-13 09:32:20 +10:30
pm8001 SCSI updates on 20120331 2012-03-31 13:31:23 -07:00
qla2xxx SCSI: qla2xxx: Test and clear FCPORT_UPDATE_NEEDED atomically. 2013-01-17 08:50:44 -08:00
qla4xxx SCSI updates on 20120331 2012-03-31 13:31:23 -07:00
sym53c8xx_2 [SCSI] sym53c8xx: Fix NULL pointer dereference in slave_destroy 2012-01-10 17:01:18 -06:00
ufs [SCSI] ufshcd: UFS Host controller driver 2012-03-27 08:26:28 +01:00
.gitignore
3w-9xxx.c [SCSI] 3w-9xxx: fix iommu_iova leak 2011-09-26 09:28:58 -05:00
3w-9xxx.h Fix common misspellings 2011-03-31 11:26:23 -03:00
3w-sas.c SCSI host lock push-down 2010-11-16 13:33:23 -08:00
3w-sas.h
3w-xxxx.c SCSI host lock push-down 2010-11-16 13:33:23 -08:00
3w-xxxx.h Fix common misspellings 2011-03-31 11:26:23 -03:00
53c700_d.h_shipped Fix common misspellings 2011-03-31 11:26:23 -03:00
53c700.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
53c700.h
53c700.scr Fix common misspellings 2011-03-31 11:26:23 -03:00
a100u2w.c Merge branch 'master' into for-next 2010-12-22 18:57:02 +01:00
a100u2w.h
a2091.c scsi: Fix up files implicitly depending on module.h inclusion 2011-10-31 19:31:24 -04:00
a2091.h
a3000.c scsi: Fix up files implicitly depending on module.h inclusion 2011-10-31 19:31:24 -04:00
a3000.h
a4000t.c
advansys.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
aha152x.c scsi: aha152x: Fix sparse warning and make printing pointer address more portable. 2012-12-03 11:46:37 -08:00
aha152x.h
aha1542.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
aha1542.h SCSI host lock push-down 2010-11-16 13:33:23 -08:00
aha1740.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
aha1740.h
aic7xxx_old.c Fix common misspellings 2011-03-31 11:26:23 -03:00
atari_NCR5380.c [SCSI] atari_NCR5380: Provide a dummy NCR5380_exit() 2011-06-29 15:11:21 -05:00
atari_scsi.c [SCSI] atari_NCR5380: Provide a dummy NCR5380_exit() 2011-06-29 15:11:21 -05:00
atari_scsi.h
atp870u.c drivers/scsi/atp870u.c: fix bad use of udelay 2012-10-13 05:38:38 +09:00
atp870u.h
BusLogic.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
BusLogic.h SCSI host lock push-down 2010-11-16 13:33:23 -08:00
bvme6000_scsi.c
ch.c Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:56 -07:00
constants.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2011-05-23 09:12:26 -07:00
dc395x.c module_param: make bool parameters really bool (drivers & misc) 2012-01-13 09:32:20 +10:30
dc395x.h Fix common misspellings 2011-03-31 11:26:23 -03:00
dmx3191d.c
dpt_i2o.c [SCSI] remove cmd->serial_number litter 2011-05-01 10:22:40 -05:00
dpti.h SCSI host lock push-down 2010-11-16 13:33:23 -08:00
dtc.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
dtc.h SCSI host lock push-down 2010-11-16 13:33:23 -08:00
eata_generic.h
eata_pio.c [SCSI] remove cmd->serial_number litter 2011-05-01 10:22:40 -05:00
eata_pio.h
eata.c [SCSI] remove cmd->serial_number litter 2011-05-01 10:22:40 -05:00
esp_scsi.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2011-05-23 09:12:26 -07:00
esp_scsi.h
fd_mcs.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
fdomain.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
fdomain.h
FlashPoint.c Fix common misspellings 2011-03-31 11:26:23 -03:00
g_NCR5380_mmio.c
g_NCR5380.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
g_NCR5380.h SCSI host lock push-down 2010-11-16 13:33:23 -08:00
gdth_ioctl.h
gdth_proc.c [SCSI] gdth: Add missing call to gdth_ioctl_free 2010-12-31 09:50:09 -06:00
gdth_proc.h
gdth.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
gdth.h treewide: Fix comment and string typo 'bufer' 2011-12-06 09:53:40 +01:00
gvp11.c scsi: Fix up files implicitly depending on module.h inclusion 2011-10-31 19:31:24 -04:00
gvp11.h
hosts.c SCSI: Fix device removal NULL pointer dereference 2012-08-09 08:31:28 -07:00
hpsa_cmd.h SCSI: hpsa: dial down lockup detection during firmware flash 2012-10-21 09:27:58 -07:00
hpsa.c SCSI: hpsa: dial down lockup detection during firmware flash 2012-10-21 09:27:58 -07:00
hpsa.h SCSI: hpsa: dial down lockup detection during firmware flash 2012-10-21 09:27:58 -07:00
hptiop.c SCSI host lock push-down 2010-11-16 13:33:23 -08:00
hptiop.h
ibmmca.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
imm.c Fix common misspellings 2011-03-31 11:26:23 -03:00
imm.h
in2000.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
in2000.h SCSI host lock push-down 2010-11-16 13:33:23 -08:00
initio.c Fix common misspellings 2011-03-31 11:26:23 -03:00
initio.h Fix common misspellings 2011-03-31 11:26:23 -03:00
ipr.c [SCSI] libsas, libata: fix start of life for a sas ata_port 2012-04-23 12:11:47 +01:00
ipr.h [SCSI] ipr: Driver version 2.5.3 2012-03-28 15:09:28 +01:00
ips.c scsi: remove the second argument of k[un]map_atomic() 2012-03-20 21:48:19 +08:00
ips.h Fix common misspellings 2011-03-31 11:26:23 -03:00
iscsi_boot_sysfs.c switch ->is_visible() to returning umode_t 2012-01-03 22:54:55 -05:00
iscsi_tcp.c [SCSI] libiscsi_tcp: fix max_r2t manipulation 2012-02-19 08:09:00 -06:00
iscsi_tcp.h [SCSI] iscsi_tcp: use iscsi_conn_get_addr_param libiscsi function 2011-02-24 12:41:10 -05:00
jazz_esp.c misc latin1 to utf8 conversions 2012-01-02 13:04:55 +01:00
Kconfig SCSI updates on 20120331 2012-03-31 13:31:23 -07:00
lasi700.c
libiscsi_tcp.c SCSI updates on 20120319 2012-03-22 12:55:29 -07:00
libiscsi.c [SCSI] libiscsi: fix cmd timeout/completion race 2012-02-19 08:09:00 -06:00
libsrp.c scsi: Fix up files implicitly depending on module.h inclusion 2011-10-31 19:31:24 -04:00
mac_esp.c mac_esp: rename irq 2012-01-22 14:50:03 +01:00
mac_scsi.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
mac_scsi.h
mac53c94.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
mac53c94.h
Makefile SCSI updates on 20120331 2012-03-31 13:31:23 -07:00
megaraid.c scsi: remove the second argument of k[un]map_atomic() 2012-03-20 21:48:19 +08:00
megaraid.h Fix common misspellings 2011-03-31 11:26:23 -03:00
mesh.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
mesh.h
mvme16x_scsi.c
mvme147.c
mvme147.h
mvumi.c [SCSI] mvumi: Add Marvell UMI driver 2011-08-27 08:36:58 -06:00
mvumi.h [SCSI] mvumi: Add Marvell UMI driver 2011-08-27 08:36:58 -06:00
NCR_D700.c
NCR_D700.h
NCR_Q720.c
NCR_Q720.h
ncr53c8xx.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
ncr53c8xx.h
NCR53c406a.c SCSI host lock push-down 2010-11-16 13:33:23 -08:00
NCR5380.c Fix common misspellings 2011-03-31 11:26:23 -03:00
NCR5380.h SCSI host lock push-down 2010-11-16 13:33:23 -08:00
nsp32_debug.c treewide: fix a few typos in comments 2011-05-10 10:16:21 +02:00
nsp32_io.h
nsp32.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
nsp32.h Fix common misspellings 2011-03-31 11:26:23 -03:00
osst_detect.h
osst_options.h
osst.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
osst.h Fix common misspellings 2011-03-31 11:26:23 -03:00
pas16.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
pas16.h SCSI host lock push-down 2010-11-16 13:33:23 -08:00
pmcraid.c SCSI, pmcraid: Fix spelling error in a pmcraid_err() call 2011-12-15 16:35:38 +01:00
pmcraid.h scsi: Fix typo in pmcraid.h 2012-02-21 11:40:37 +01:00
ppa.c SCSI host lock push-down 2010-11-16 13:33:23 -08:00
ppa.h
ps3rom.c scsi: Fix up files implicitly depending on module.h inclusion 2011-10-31 19:31:24 -04:00
qla1280.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
qla1280.h
qlogicfas.c
qlogicfas408.c SCSI host lock push-down 2010-11-16 13:33:23 -08:00
qlogicfas408.h SCSI host lock push-down 2010-11-16 13:33:23 -08:00
qlogicpti.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
qlogicpti.h of/device: Replace struct of_device with struct platform_device 2010-08-06 09:25:50 -06:00
raid_class.c
script_asm.pl
scsi_debug.c SCSI: scsi_debug: Fix off-by-one bug when unmapping region 2012-10-21 09:27:58 -07:00
scsi_devinfo.c [SCSI] Blacklist Traxdata CDR4120 and IOMEGA Zip drive to avoid lock ups. 2011-06-29 15:08:47 -05:00
scsi_error.c SCSI: Fix 'Device not ready' issue on mpt2sas 2012-09-14 10:00:32 -07:00
scsi_ioctl.c
scsi_lib_dma.c scsi: Add export.h for EXPORT_SYMBOL/THIS_MODULE as required 2011-10-31 19:31:23 -04:00
scsi_lib.c SCSI: scsi_lib: fix scsi_io_completion's SG_IO error propagation 2012-09-14 10:00:23 -07:00
scsi_logging.h
scsi_module.c
scsi_netlink.c Merge branch 'for-linus' of git://selinuxproject.org/~jmorris/linux-security 2012-01-14 18:36:33 -08:00
scsi_pm.c [SCSI] scsi_pm: Fix bug in the SCSI power management handler 2012-02-18 08:54:19 -06:00
scsi_priv.h SCSI: Fix device removal NULL pointer dereference 2012-08-09 08:31:28 -07:00
scsi_proc.c scsi: fix scsi_proc new kernel-doc warning 2011-05-28 23:12:11 -07:00
scsi_sas_internal.h
scsi_scan.c SCSI: Fix 'Device not ready' issue on mpt2sas 2012-09-14 10:00:32 -07:00
scsi_sysctl.c
scsi_sysfs.c SCSI: prevent stack buffer overflow in host_reset 2013-01-17 08:50:44 -08:00
scsi_tgt_if.c scsi: Add export.h for EXPORT_SYMBOL/THIS_MODULE as required 2011-10-31 19:31:23 -04:00
scsi_tgt_lib.c [SCSI] esp, scsi_tgt_lib, fcoe: use list_move() instead of list_del()/list_add() combination 2011-05-01 10:20:10 -05:00
scsi_tgt_priv.h
scsi_trace.c [SCSI] scsi_trace: Decode UNMAP bit in WRITE SAME(10) 2011-05-24 12:38:36 -04:00
scsi_transport_api.h
scsi_transport_fc_internal.h
scsi_transport_fc.c [SCSI] scsi_transport_fc: Add FDMI host attributes 2012-02-19 08:08:57 -06:00
scsi_transport_iscsi.c [SCSI] iscsi class: fix gfp use in ping compl and host event 2012-03-27 08:26:36 +01:00
scsi_transport_sas.c [SCSI] scsi_transport_sas: 'enable' phys on reset 2012-02-29 15:43:54 -06:00
scsi_transport_spi.c switch ->is_visible() to returning umode_t 2012-01-03 22:54:55 -05:00
scsi_transport_srp_internal.h
scsi_transport_srp.c
scsi_typedefs.h
scsi_wait_scan.c SCSI: fix scsi_wait_scan 2012-06-10 00:36:05 +09:00
scsi.c [SCSI] Handle disk devices which can not process medium access commands 2012-02-19 10:14:52 -06:00
scsi.h
scsicam.c fs: move code out of buffer.c 2012-01-03 22:54:07 -05:00
sd_dif.c scsi: remove the second argument of k[un]map_atomic() 2012-03-20 21:48:19 +08:00
sd.c SCSI: sd: Reshuffle init_sd to avoid crash 2013-01-27 20:47:44 -08:00
sd.h [SCSI] Handle disk devices which can not process medium access commands 2012-02-19 10:14:52 -06:00
ses.c [SCSI] ses: requesting a fault indication 2011-06-29 12:14:25 -05:00
sg.c [SCSI] sg: convert to kstrtoul_from_user() 2012-01-16 12:17:29 +04:00
sgiwd93.c update David Miller's old email address 2011-04-06 06:19:38 -07:00
sim710.c
sni_53c710.c misc latin1 to utf8 conversions 2012-01-02 13:04:55 +01:00
sr_ioctl.c scsi: Fix up files implicitly depending on module.h inclusion 2011-10-31 19:31:24 -04:00
sr_vendor.c
sr.c [SCSI] sr: check_events() ignore GET_EVENT when TUR says otherwise 2011-07-21 14:15:58 -07:00
sr.h [SCSI] sr: check_events() ignore GET_EVENT when TUR says otherwise 2011-07-21 14:15:58 -07:00
st_options.h
st.c SCSI updates on 20120331 2012-03-31 13:31:23 -07:00
st.h [SCSI] st: expand ability to write immediate filemarks 2012-03-27 08:26:34 +01:00
stex.c SCSI host lock push-down 2010-11-16 13:33:23 -08:00
storvsc_drv.c SCSI: storvsc: Account for in-transit packets in the RESET path 2012-10-21 09:27:58 -07:00
sun_esp.c dt/sparc: Eliminate users of of_platform_{,un}register_driver 2011-02-28 01:36:39 -07:00
sun3_NCR5380.c [SCSI] sun3: Remove commented out merge_contiguous_buffers 2011-06-29 15:15:05 -05:00
sun3_scsi_vme.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
sun3_scsi.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
sun3_scsi.h SCSI host lock push-down 2010-11-16 13:33:23 -08:00
sun3x_esp.c
sym53c416.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
sym53c416.h SCSI host lock push-down 2010-11-16 13:33:23 -08:00
t128.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
t128.h SCSI host lock push-down 2010-11-16 13:33:23 -08:00
tmscsim.c [SCSI] remove cmd->serial_number litter 2011-05-01 10:22:40 -05:00
tmscsim.h
u14-34f.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
ultrastor.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
ultrastor.h SCSI host lock push-down 2010-11-16 13:33:23 -08:00
virtio_scsi.c SCSI: scsi: virtio-scsi: Fix address translation failure of HighMem pages used by sg list 2012-10-02 10:30:08 -07:00
vmw_pvscsi.c [SCSI] vmw_pvscsi: Try setting host->max_id as suggested by the device. 2012-03-27 08:26:36 +01:00
vmw_pvscsi.h [SCSI] vmw_pvscsi: Try setting host->max_id as suggested by the device. 2012-03-27 08:26:36 +01:00
wd33c93.c Merge branch 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6 2011-05-26 13:19:00 -07:00
wd33c93.h SCSI host lock push-down 2010-11-16 13:33:23 -08:00
wd7000.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
zalon.c
zorro7xx.c