On Sun, Feb 17, 2013 at 04:52:16PM +0900, Simon Horman wrote: > On Sat, Feb 16, 2013 at 05:58:25PM +0100, Sascha Hauer wrote: > > Hi Guennadi, > > > > On Sat, Feb 16, 2013 at 04:21:16PM +0100, Guennadi Liakhovetski wrote: > > > MMC defines a number of standard DT bindings. Having each driver parse > > > them individually adds code redundancy and is error prone. Provide a > > > standard function to unify the parsing. After all drivers are converted > > > to using it instead of their own parsers, this function can be integrated > > > into mmc_alloc_host(). > > > > > > Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@xxxxxx> > > > --- > > > > > > v5: > > > > > > 1. fix an uninitialised variable warning. Note, I don't actually know, > > > whether this will fix the error, reported by the kbuild test robot. None > > > of my compilers reports an error there, at most, I've got a warning with > > > one of them, and, surprisingly, it is gone after this change. > > > Surprisingly, because I only add the bus_width initialisation in the error > > > case - exactly as it actually has to be done. In the success case it is > > > assigned set by the function. But the compiler cannot know that! > > > > Maybe the build robot builds with devicetree disabled? In this case > > of_property_read_u32_array expands to a static inline function and the > > compiler indeed knows that &bus_width is unitialized. It also knows that > > this function always returns an error, so what you did below should > > silence the compiler. > > It seems so. The configuration that flagged the error was atngw100_defconfig. > > ARCH=avr32 make atngw100_defconfig > grep USE_OF .config > [nothing] In that vein I managed to reproduce the warning using ap4evb_defconfig and then enabled MMC. I have also verified that v5 does not produce the same warning. I chose this as I don't have a avr32 cross-compile environment but I do have one for ARM and I know that ap4evb doesn't use DT. I will update topic/mmc with v5. -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
