Re: [PATCH v2] Remove deprecated IRQF_DISABLED flag entirely

Felipe Balbi
2015-03-09T16:54:34Z

[-- Attachment #1: Type: text/plain, Size: 1742 bytes --]

Hi,

On Thu, Mar 05, 2015 at 03:23:08PM +0100, Valentin Rothberg wrote:
> The IRQF_DISABLED 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.
>
> Signed-off-by: Valentin Rothberg <valentinrothberg@gmail.com>
> ---
> 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 by commit b0e1ee8e1405
> ("MSI-HOWTO.txt: remove reference on IRQF_DISABLED").
>
> All remaining references are changelogs that I suggest to keep.
>
> Changelog
>
> v2: Correct previous change to drivers/mtd/nand/hisi504_nand.c that
> broke compilation. Reported by Dan Carpenter.
> ---
> drivers/usb/isp1760/isp1760-core.c | 3 +--
> drivers/usb/isp1760/isp1760-udc.c | 4 ++--

I have a commit in my tree for isp1760:

https://git.kernel.org/cgit/linux/kernel/git/balbi/usb.git/commit/?h=testing/fixes&id=80b4a0f8feeb6ee7fa4430a2b4ae1155ed923bd2

--
balbi

[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 819 bytes --]