[PATCH 1/2] net/am2150: fix nmclan_cs.c shared interrupt handling
arnd at arndb.de
Mon Nov 24 02:57:55 PST 2014
On Friday 21 November 2014 15:17:35 David Miller wrote:
> From: Arnd Bergmann <arnd at arndb.de>
> Date: Thu, 20 Nov 2014 16:11:14 +0100
> > A recent patch tried to work around a valid warning for the use of a
> > deprecated interface by blindly changing from the old
> > pcmcia_request_exclusive_irq() interface to pcmcia_request_irq().
> > This driver has an interrupt handler that is not currently aware
> > of shared interrupts, but can be easily converted to be.
> > At the moment, the driver reads the interrupt status register
> > repeatedly until it contains only zeroes in the interesting bits,
> > and handles each bit individually.
> > This patch adds the missing part of returning IRQ_NONE in case none
> > of the bits are set to start with, so we can move on to the next
> > interrupt source.
> > Signed-off-by: Arnd Bergmann <arnd at arndb.de>
> > Fixes: 5f5316fcd08ef7 ("am2150: Update nmclan_cs.c to use update PCMCIA API")
> > ---
> > I had this patch in my queue of things to submit and noticed that
> > the warning had gone away upstream but my patch was still there.
> > For all I can tell, the driver is broken without this, although it
> > would rarely be a problem.
> I'm happy for this to go alongside patch #2 via another tree:
> Acked-by: David S. Miller <davem at davemloft.net>
I was hoping you could take at least this one, possibly both.
Since you already had Jeff's patch in it, the first patch now
fixes a (mostly harmless) 3.18 regression, and the second patch
is just a cosmetic cleanup, but there is no longer any dependency
between the two.
It looks like Greg is now handling most of the PCMCIA patches
in the absence of a subsystem maintainer, so I'll send him the
second one for 3.19, let me know if you still want me to send
him the first one too.
More information about the linux-pcmcia