From: Peter Korsgaard <jacmet@sunsite•dk>
To: Doug Anderson <dianders@chromium•org>
Cc: "Wolfram Sang" <wsa@the-dreams•de>,
"Tony Lindgren" <tony@atomide•com>,
"Linus Walleij" <linus.walleij@linaro•org>,
"Thierry Reding" <thierry.reding@avionic-design•de>,
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"Sonic Zhang" <sonic.zhang@analog•com>,
linux-arm-kernel@lists•infradead.org,
"Deepak Sikri" <deepak.sikri@st•com>,
"Havard Skinnemoen" <hskinnemoen@gmail•com>,
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"Jean Delvare" <khali@linux-fr•org>,
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"Alexander Stein" <alexander.stein@systec-electronic•com>
Subject: Re: [PATCH] i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls
Date: Sun, 17 Feb 2013 16:12:31 +0100 [thread overview]
Message-ID: <87txpboty7.fsf@dell.be.48ers.dk> (raw)
In-Reply-To: <1360970315-32116-1-git-send-email-dianders@chromium.org> (Doug Anderson's message of "Fri, 15 Feb 2013 15:18:35 -0800")
>>>>> "Doug" == Doug Anderson <dianders@chromium•org> writes:
Doug> There is simply no reason to be manually setting the private driver
Doug> data to NULL in the remove/fail to probe cases. This is just extra
Doug> cruft code that can be removed.
Doug> A few notes:
Doug> * Nothing relies on drvdata being set to NULL.
Doug> * The __device_release_driver() function eventually calls
Doug> dev_set_drvdata(dev, NULL) anyway, so there's no need to do it
Doug> twice.
Doug> * I verified that there were no cases where xxx_get_drvdata() was
Doug> being called in these drivers and checking for / relying on the NULL
Doug> return value.
Doug> This could be cleaned up kernel-wide but for now just take the baby
Doug> step and remove from the i2c subsystem.
Doug> Reported-by: Wolfram Sang <wsa@the-dreams•de>
Doug> Reported-by: Stephen Warren <swarren@wwwdotorg•org>
Doug> Signed-off-by: Doug Anderson <dianders@chromium•org>
For i2c-ocores.c + i2c-mux-gpio.c:
Acked-by: Peter Korsgaard <jacmet@sunsite•dk>
--
Bye, Peter Korsgaard
next prev parent reply other threads:[~2013-02-17 15:12 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1360953682-25066-1-git-send-email-dianders@chromium.org>
2013-02-15 23:18 ` [PATCH] i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls Doug Anderson
2013-02-16 19:52 ` Jean Delvare
2013-02-17 15:12 ` Peter Korsgaard [this message]
2013-02-18 10:35 ` Mika Westerberg
2013-02-18 12:17 ` Marek Vasut
2013-02-21 10:48 ` Wolfram Sang
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