Messages in this thread Patch in this message | | | Date | Wed, 31 Oct 2007 08:12:12 -0700 | From | Greg KH <> | Subject | [patch 21/26] hwmon/lm87: Fix a division by zero |
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2.6.22-stable review patch. If anyone has any objections, please let us know.
------------------ From: Jean Delvare <khali@linux-fr.org>
Already in Linus' tree: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=b965d4b7f614522170af6a7e450be0333792ccd2
Missing parentheses in the definition of FAN_FROM_REG cause a division by zero for a specific register value.
Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Hans de Goede <j.w.r.degoede@hhs.nl> Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- drivers/hwmon/lm87.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/hwmon/lm87.c +++ b/drivers/hwmon/lm87.c @@ -129,7 +129,7 @@ static u8 LM87_REG_TEMP_LOW[3] = { 0x3A, (((val) < 0 ? (val)-500 : (val)+500) / 1000)) #define FAN_FROM_REG(reg,div) ((reg) == 255 || (reg) == 0 ? 0 : \ - 1350000 + (reg)*(div) / 2) / ((reg)*(div)) + (1350000 + (reg)*(div) / 2) / ((reg)*(div))) #define FAN_TO_REG(val,div) ((val)*(div) * 255 <= 1350000 ? 255 : \ (1350000 + (val)*(div) / 2) / ((val)*(div))) -- - 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/
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