On Thu, Dec 12, 2019 at 12:12:56AM +0000, Robin Murphy wrote: > Hi Vicente, > > On 2019-12-11 11:38 pm, Vicente Bergas wrote: > > Hi, > > since v5.5-rc1 the google kevin chromebook does not boot. > > Git bisect reports 5e0c21c75e8c PCI/ASPM: Remove pcie_aspm_enabled() > > unnecessary locking > > as the first bad commit. > > > > In order to revert it from v5.5-rc1 i had to also revert some dependencies: > > 5e0c21c75e8c08375a69710527e4a921b897cb7e > > aff5d0552da4055da3faa27ee4252e48bb1f5821 > > 35efea32b26f9aacc99bf07e0d2cdfba2028b099 > > 687aaf386aeb551130f31705ce40d1341047a936 > > 72ea91afbfb08619696ccde610ee4d0d29cf4a1d > > 87e90283c94c76ee11d379ab5a0973382bbd0baf > > After reverting all of this, still no luck. > > So, either the results of git bisect are not to be trusted, or > > there are more bad commits. > > > > By "does not boot" i mean that the display fails to start and > > the display is the only output device, so debugging is quite difficult. > > Assuming it's a manifestation of the same PCI breakage that Enric and > Lorenzo figured out, there's a proposed fix here: > https://lkml.org/lkml/2019/12/11/199 It's likely that any PCI driver that uses PCI IO with that controller will suffer the same fate. Vicente - can you try the patch that has been proposed and verify it fixes the issue for you? Thanks, Andrew Murray > > Robin. > > > v5.5-rc1 as is (reverting no commits at all) works fine when disabling PCI: > > # CONFIG_PCI is not set > > > > Regards, > > Vicente. > > > > > > _______________________________________________ > > Linux-rockchip mailing list > > Linux-rockchip@xxxxxxxxxxxxxxxxxxx > > http://lists.infradead.org/mailman/listinfo/linux-rockchip
