Re: [patch 2.6.23-rc1] dma_free_coherent() needs irqs enabled (sigh)

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Tue, Jul 24, 2007 at 04:08:11PM -0700, David Brownell wrote:
> On Tuesday 24 July 2007, Russell King wrote:
> > On Tue, Jul 24, 2007 at 02:29:05PM -0700, David Brownell wrote:
> > > On at least ARM (and I'm told MIPS too) dma_free_coherent() has a newish
> > > call context requirement:  unlike its dma_alloc_coherent() sibling, it
> > > may not be called with IRQs disabled.  (This was new behavior on ARM as
> > > of late 2006, caused by ARM SMP updates.)
> > 
> > I think you got the year wrong:
> > 
> > 5edf71ae (Russell King      2005-11-25 15:52:51 +0000 364)      WARN_ON(irqs_disabled());
> > 
> > which is due to this commit:
> > 
> > [ARM] Do not call flush_tlb_kernel_range() with IRQs disabled.
> 
> This little "to do" list item has been sitting in my mailbox way
> too long then.  Certainly since it was fair to say "last year"!  ;)

Are you intentionally not reading what I said?

> > Signed-off-by: Russell King <[email protected]>
> 
> Thanks...

That was part of the commit I quoted, not an endorsement of your patch,
though I think it does deserve an:

Acked-by: Russell King <[email protected]>

-- 
Russell King
 Linux kernel    2.6 ARM Linux   - http://www.arm.linux.org.uk/
 maintainer of:
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux