On Friday 04 April 2014 06:35 AM, Peter Howard wrote: > Problem tracked down - see at bottom. > > On Fri, 2014-04-04 at 10:21 +1100, Peter Howard wrote: >> On Fri, 2014-04-04 at 09:57 +1100, Peter Howard wrote: >>> Dear All: >>> >>> I'm trying to build a kernel from the current head of the git repository >>> for an OMAP-L138 board. This boots fine with a kernel built from the >>> last Ti release*. However when I substitute in a kernel built from the >>> repo, the kernel gets a SIGSEGV when it tries to start init (given you >>> see nothing from init itself I'm guessing the segfault occurs during the >>> loading of init). >>> >>> I'm building using da8xx_omapl_defconfig and the arago 2011.09 >>> toolchain. >> >> Minor extra details: >> >> That defconfig doesn't enable MMC/SD support; I enabled it. No other >> changes. >> >> I also got the same behavior using da850_omapl138_defconfig from the >> last Ti release. >> > > I discovered the problem is not specific to the Ti git repo. So I went > bisecting and ended up at this commit: > > [c2dde5f8f2095d7c623ff3565c1462e190272273] dmaengine: add TI EDMA DMA engine > driver > > da8xx_omapl_defconfig does not enable the DMA driver by default. Once I > enabled it, the problem went away. I'd say this is a bug. Either: > A. You should be able to use the MMC/SD slot without enabling the > DMA driver, or > B. You shouldn't be able to create a configuration for the DaVinci > where MMC/SD is enabled and the DMA driver isn't. > > So, which should it be?
'A' is the preferred solution. This problem however should be fixed in latest linux-next where da8xx_omapl_defconfig is removed and davinci_all_defconfig enables CONFIG_TI_EDMA Thanks, Sekhar _______________________________________________ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
