Hi Ashish, On Fri, Jan 25, 2013 at 02:03:49PM +0530, Ashish Jangam wrote: > An issue has been reported where the PMIC either locks up or fails to > respond following a system Reset. This could result in a second write > in which the bus writes the current content of the write buffer to address > of the last I2C access. > > The failure case is where this unwanted write transfers incorrect data to > a critical register. > > This patch fixes this issue to by following any read or write with a dummy > read > to a safe register address. A safe register address is one where the contents > will not affect the operation of the system. > > Signed-off-by: Ashish Jangam <ashish.jan...@kpitcummins.com> > --- > drivers/mfd/da9052-i2c.c | 61 ++++++++++++++++++++++++++++++++++ > include/linux/mfd/da9052/da9052.h | 66 ++++++++++++++++++++++++++++++++++-- > include/linux/mfd/da9052/reg.h | 3 ++ > 3 files changed, 126 insertions(+), 4 deletions(-) Applied to my for-linus branch.
Cheers, Samuel. -- Intel Open Source Technology Centre http://oss.intel.com/ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
