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From: Grzegorz Bernacki <gjb@semihalf.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v2 1/3] mpc52xx: Add SPI driver.
Date: Wed, 10 Jun 2009 14:50:49 +0200	[thread overview]
Message-ID: <4A2FAC29.2000304@semihalf.com> (raw)
In-Reply-To: <m2ocsw2uhs.fsf@ohwell.denx.de>

Detlev Zundel wrote:
>> +	out8((u32)&spi->brr, 0x77);	/* baud rate: IPB clock / 2048 */
> 
> Ok, we're actually using the accessor macros, but I fail to see why a
> (u32) cast is needed here - it even actively prevents one of the
> "features" of the macros, namely type checking.
> 
> Why exactly are they needed?

Declaration of out8() is in common.h file:
void		out8(unsigned int, unsigned char);
so I think that this cast is necessary.

Without it I get warning:
mpc52xx_spi.c:38: warning: passing argument 1 of 'out8' makes integer
from pointer without a cast

regards,
Grzesiek

  reply	other threads:[~2009-06-10 12:50 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-06-09 12:14 [U-Boot] [PATCH v2 1/3] mpc52xx: Add SPI driver Grzegorz Bernacki
2009-06-09 12:14 ` [U-Boot] [PATCH v2 2/3] digsy MTC: Add SPI support Grzegorz Bernacki
2009-06-10 11:39   ` Detlev Zundel
2009-06-10 14:03     ` Grzegorz Bernacki
2009-06-09 12:14 ` [U-Boot] [PATCH v2 3/3] digsy MTC: Add 'mtc' command Grzegorz Bernacki
2009-06-10 11:33 ` [U-Boot] [PATCH v2 1/3] mpc52xx: Add SPI driver Detlev Zundel
2009-06-10 12:50   ` Grzegorz Bernacki [this message]
2009-06-10 13:29     ` Wolfgang Denk

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