On 04/29/2014 05:17 AM, Rafael J. Wysocki wrote: > On Tuesday, April 29, 2014 12:23:54 AM Srivatsa S. Bhat wrote: >> >> Hi, >> >> Meelis Roos reported hangs during boot in the longhaul cpufreq driver, after >> commit 12478cf0c55 (cpufreq: Make sure frequency transitions are serialized). >> The root-cause of this issue is the extra invocation of the >> cpufreq_freq_transition_begin() and cpufreq_freq_transition_end() APIs in the >> longhaul driver. I found similar issues in the powernow-k6 and powernow-k7 >> drivers as well. This patchset fixes the issue in all the 3 drivers and also >> adds a debug infrastructure to catch such issues easily. >> >> Patches 1-4 fix the regression in longhaul, powernow-k6 and powernow-k7 >> drivers. (Patch 2 fixes a different bug in powernow-k6, and it is kept as a >> separate patch instead of merging it with patch 3, because I felt that it was >> a bit subtle and needed attention in a separate patch). >> >> Patch 5 adds a debug infrastructure to the cpufreq core to catch such problems >> more easily in the future. > > I've queued up patches [1-4/5] for 3.15, the last one I need to have another > look at tomorrow. Great! Thanks a lot! > > BTW, when you fix regressions, please always add a Fixes: tag to the changelog. > Oh, ok, will keep that in mind from next time. Thank you! Regards, Srivatsa S. Bhat -- To unsubscribe from this list: send the line "unsubscribe cpufreq" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
