diff options
| author | Marcelo Roberto Jimenez <mroberto@cpti.cetuc.puc-rio.br> | 2011-02-02 21:04:02 +0300 |
|---|---|---|
| committer | John Stultz <john.stultz@linaro.org> | 2011-02-03 23:59:50 +0300 |
| commit | 83a06bf50bdf2074b9404951ff60e142d159d93b (patch) | |
| tree | ebb70cdc221d06529fd327e284f1b9191939f6aa /drivers/rtc/rtc-ep93xx.c | |
| parent | 9118626a30f8a3f58674623bebd3c34961e558af (diff) | |
| download | linux-83a06bf50bdf2074b9404951ff60e142d159d93b.tar.xz | |
RTC: Prevents a division by zero in kernel code.
This patch prevents a user space program from calling the RTC_IRQP_SET
ioctl with a negative value of frequency. Also, if this call is make
with a zero value of frequency, there would be a division by zero in the
kernel code.
[jstultz: Also initialize irq_freq to 1 to catch other divbyzero issues]
CC: Alessandro Zummo <a.zummo@towertech.it>
CC: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Marcelo Roberto Jimenez <mroberto@cpti.cetuc.puc-rio.br>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Diffstat (limited to 'drivers/rtc/rtc-ep93xx.c')
0 files changed, 0 insertions, 0 deletions