From: Tejun Heo <tj@kernel.org>
To: Grant Likely <grant.likely@secretlab.ca>
Cc: Wolfram Sang <w.sang@pengutronix.de>,
Linus Walleij <linus.walleij@linaro.org>,
linux-kernel@vger.kernel.org
Subject: READ/WRITE definitions in drivers/spi/spi-omap-100k.c
Date: Thu, 24 Oct 2013 13:46:31 +0100 [thread overview]
Message-ID: <20131024124631.GA14517@mtj.dyndns.org> (raw)
Hey, guys.
I was modifying includes in a core header file and got duplicate macro
definition warnings on READ / WRITE in drivers/spi/spi-omap-100k.c.
Apparently that driver defines READ / WRITE as macros and assigns the
opposite values to them from the usual READ / WRITE constants defined
in include/linux/fs.h.
I just skimmed through it and there doesn't seem to be any user of the
macros. Can we *please* remove these? Please note that READ / WRITE
defined in include/linux/fs.h is something which is widely used
throughout the kernel and there are multiple interfaces which take
those constants. Re-defining them in the other way around in a driver
file can lead to subtle issues and just is a bad idea. In general,
refraining from using generic symbols without any qualitification in
low level drivers would be nice.
Thanks.
--
tejun
next reply other threads:[~2013-10-24 12:46 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-24 12:46 Tejun Heo [this message]
2013-10-29 13:34 ` Linus Walleij
2013-10-29 16:24 ` Mark Brown
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