Hi Mark, On Wed, 23 Mar 2005 01:35:14 -0500, "Mark M. Hoffman" <mhoffman at lightlink.com> wrote: >> Thinking about the fan_div setting, it is a read/modify/write >> (RMW) operation to a chip register, should we take action to >> prevent another process accessing the chip on i2c during this >> RMW action? > >Looks like Philip addressed this one. Not at all. >> preventing DoS, updating i2c bus chips >> >> Another query, we take care not to read chip too frequently, >> what stops user-space DoS'ing the i2c bus with continuous >> writes by constant update requests? > >Nothing prevents it, except that you need root to do those writes/updates. >Considering all the other damage you can do as root... there's not much >point in any further protection for the I2C bus. Your answer tells me it is not an issue. "Don't do that" Cheers, Grant.
