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authorValentin Rothberg <valentinrothberg@gmail.com>2015-03-05 17:23:08 +0300
committerIngo Molnar <mingo@kernel.org>2015-03-05 22:53:06 +0300
commitd8bf368d0631d4bc2612d8bf2e4e8e74e620d0cc (patch)
treea4f35064af9e579d5b20ee440c1a14ff390b31c2 /include/linux/interrupt.h
parent33ca8a53f262b4af40611bea331b8c87d133af72 (diff)
downloadlinux-d8bf368d0631d4bc2612d8bf2e4e8e74e620d0cc.tar.xz
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 6932bf37bed4 ("genirq: Remove IRQF_DISABLED from core code"). According to commit e58aa3d2d0cc ("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>
Diffstat (limited to 'include/linux/interrupt.h')
-rw-r--r--include/linux/interrupt.h3
1 files changed, 0 insertions, 3 deletions
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index 3bb01b9a379c..2cee1761c77d 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -39,8 +39,6 @@
* These flags used only by the kernel as part of the
* irq handling routines.
*
- * IRQF_DISABLED - keep irqs disabled when calling the action handler.
- * DEPRECATED. This flag is a NOOP and scheduled to be removed
* IRQF_SHARED - allow sharing the irq among several devices
* IRQF_PROBE_SHARED - set by callers when they expect sharing mismatches to occur
* IRQF_TIMER - Flag to mark this interrupt as timer interrupt
@@ -58,7 +56,6 @@
* IRQF_EARLY_RESUME - Resume IRQ early during syscore instead of at device
* resume time.
*/
-#define IRQF_DISABLED 0x00000020
#define IRQF_SHARED 0x00000080
#define IRQF_PROBE_SHARED 0x00000100
#define __IRQF_TIMER 0x00000200