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Valentin Rothberg d8bf368d06 genirq: Remove the deprecated 'IRQF_DISABLED' request_irq() flag entirely 
The IRQF_DISABLED flag is a NOOP and has been scheduled for removal
since Linux v2.6.36 by commit 6932bf37be ("genirq: Remove
IRQF_DISABLED from core code").

According to commit e58aa3d2d0 ("genirq: Run irq handlers with
interrupts disabled"), running IRQ handlers with interrupts
enabled can cause stack overflows when the interrupt line of the
issuing device is still active.

This patch ends the grace period for IRQF_DISABLED (i.e.,
SA_INTERRUPT in older versions of Linux) and removes the
definition and all remaining usages of this flag.

There's still a few non-functional references left in the kernel
source:

  - The bigger hunk in Documentation/scsi/ncr53c8xx.txt is removed entirely
    as IRQF_DISABLED is gone now; the usage in older kernel versions
    (including the old SA_INTERRUPT flag) should be discouraged.  The
    trouble of using IRQF_SHARED is a general problem and not specific to
    any driver.

  - I left the reference in Documentation/PCI/MSI-HOWTO.txt untouched since
    it has already been removed in linux-next.

  - All remaining references are changelogs that I suggest to keep.

Signed-off-by: Valentin Rothberg <valentinrothberg@gmail.com>
Cc: Afzal Mohammed <afzal@ti.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Brian Norris <computersforpeace@gmail.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Ewan Milne <emilne@redhat.com>
Cc: Eyal Perry <eyalpe@mellanox.com>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Hongliang Tao <taohl@lemote.com>
Cc: Huacai Chen <chenhc@lemote.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Keerthy <j-keerthy@ti.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Nishanth Menon <nm@ti.com>
Cc: Paul Bolle <pebolle@tiscali.nl>
Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Quentin Lambert <lambert.quentin@gmail.com>
Cc: Rajendra Nayak <rnayak@ti.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Sricharan R <r.sricharan@ti.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Zhou Wang <wangzhou1@hisilicon.com>
Cc: iss_storagedev@hp.com
Cc: linux-mips@linux-mips.org
Cc: linux-mtd@lists.infradead.org
Link: http://lkml.kernel.org/r/1425565425-12604-1-git-send-email-valentinrothberg@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-05 20:53:06 +01:00
..
scsi_transport_srp
00-INDEX Documentation/: update 00-INDEX files 2014-02-10 16:01:40 -08:00
53c700.txt
aacraid.txt
advansys.txt
aha152x.txt
aic7xxx.txt
aic79xx.txt
arcmsr_spec.txt
bfa.txt
bnx2fc.txt
BusLogic.txt
ChangeLog.1992-1997
ChangeLog.arcmsr
ChangeLog.ips
ChangeLog.lpfc
ChangeLog.megaraid
ChangeLog.megaraid_sas megaraid_sas: Version and Changelog update 2014-09-16 09:09:54 -07:00
ChangeLog.ncr53c8xx
ChangeLog.sym53c8xx
ChangeLog.sym53c8xx_2
cxgb3i.txt
dc395x.txt
dpti.txt
dtc3x80.txt
FlashPoint.txt
g_NCR5380.txt
hpsa.txt
hptiop.txt
in2000.txt
libsas.txt libsas: remove task_collector mode 2014-11-27 16:40:24 +01:00
LICENSE.FlashPoint
LICENSE.qla2xxx qla2xxx: Change copyright year to 2014 in all the source files. 2014-05-19 13:31:02 +02:00
LICENSE.qla4xxx
link_power_management_policy.txt
lpfc.txt
megaraid.txt
Mylex.txt
ncr53c8xx.txt genirq: Remove the deprecated 'IRQF_DISABLED' request_irq() flag entirely 2015-03-05 20:53:06 +01:00
NinjaSCSI.txt
osd.txt Boaz Harrosh - fix email in Documentation 2014-10-19 20:36:36 +03:00
osst.txt
ppa.txt
qlogicfas.txt
scsi-changer.txt
scsi-generic.txt
scsi-parameters.txt
scsi.txt
scsi_eh.txt scsi: Fix "choir" and "beeing" malaprops 2014-10-29 14:33:46 +01:00
scsi_fc_transport.txt
scsi_mid_low_api.txt scsi: drop reason argument from ->change_queue_depth 2014-11-24 14:45:27 +01:00
st.txt st: add a debug_flag module parameter request 2014-11-12 11:15:55 +01:00
sym53c8xx_2.txt
sym53c500_cs.txt
tmscsim.txt genirq: Remove the deprecated 'IRQF_DISABLED' request_irq() flag entirely 2015-03-05 20:53:06 +01:00
ufs.txt
wd719x.txt wd719x: Add firmware documentation 2014-11-25 15:42:55 +01:00