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hwmon: (gpio-fan) Prevent overflow problem when writing large limits
authorAxel Lin <axel.lin@ingics.com>
Sat, 2 Aug 2014 05:36:38 +0000 (13:36 +0800)
committerGuenter Roeck <linux@roeck-us.net>
Mon, 4 Aug 2014 14:27:50 +0000 (07:27 -0700)
commit2565fb05d1e9fc0831f7b1c083bcfcb1cba1f020
treea4a81cb708b06dc65da7d38ffc3ff0a4050ef858tree | snapshot (tar.gz zip)
parent18d03f3cbd229ad9b03e12335ea066461fc00c73commit | diff
hwmon: (gpio-fan) Prevent overflow problem when writing large limits

On platforms with sizeof(int) < sizeof(unsigned long), writing a rpm value
larger than MAXINT will result in unpredictable limit values written to the
chip. Avoid auto-conversion from unsigned long to int to fix the problem.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Cc: stable@vger.kernel.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
drivers/hwmon/gpio-fan.c diff | blob | blame | history