lkml.org 
[lkml]   [2009]   [Dec]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 6/7] spi/mpc8xxx: don't check platform_get_irq's return value against zero
On Wed, Dec 16, 2009 at 05:10:08PM +0100, Uwe Kleine-König wrote:
> platform_get_irq returns -ENXIO on failure, so !irq was probably
> always true. Better use (int)irq <= 0. Note that a return value of
> zero is still handled as error even though this could mean irq0.
>
> This is a followup to 305b3228f9ff4d59f49e6d34a7034d44ee8ce2f0 that
> changed the return value of platform_get_irq from 0 to -ENXIO on error.
>
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
> Cc: David Vrabel <dvrabel@arcom.com>
> Cc: Greg Kroah-Hartman <gregkh@suse.de>
> Cc: David Brownell <dbrownell@users.sourceforge.net>
> Cc: Grant Likely <grant.likely@secretlab.ca>
> Cc: Kumar Gala <galak@kernel.crashing.org>
> Cc: Anton Vorontsov <avorontsov@ru.mvista.com>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: spi-devel-general@lists.sourceforge.net
> ---
> drivers/spi/spi_mpc8xxx.c | 2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/spi/spi_mpc8xxx.c b/drivers/spi/spi_mpc8xxx.c
> index e9390d7..b13501a 100644
> --- a/drivers/spi/spi_mpc8xxx.c
> +++ b/drivers/spi/spi_mpc8xxx.c
> @@ -1339,7 +1339,7 @@ static int __devinit plat_mpc8xxx_spi_probe(struct platform_device *pdev)
> return -EINVAL;
>
> irq = platform_get_irq(pdev, 0);
> - if (!irq)
> + if ((int)irq <= 0)

I tend to think that it's really hopeless to fix the
platform_get_irq() in its current form, so can you get rid
of this ugly cast and just make the irq signed?

And I'll be fine with it. :-(

--
Anton Vorontsov
email: cbouatmailru@gmail.com
irc://irc.freenode.net/bd2
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2009-12-17 17:43    [from the cache]
©2003-2011 Jasper Spaans