Hi Olof, Hi Kevin, Hi Arnd, Please consider these third round of Renesas ARM based SoC fixes for v4.13. This pull request is based on v4.12-rc1 rather than earlier fixes for v4.13 as it is unrelated to those fixes and their dependencies - arm64 DT updates for R-Car Gen 3 SoCs. This fix resolves a deadlock during boot on R-Car Gen 2 SoCs. The bug has been present since v4.1-rc1 but does not manifest in a deadlock until v4.13-rc1. The following changes since commit 2ea659a9ef488125eb46da6eb571de5eae5c43f6: Linux 4.12-rc1 (2017-05-13 13:19:49 -0700) are available in the git repository at: https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas.git tags/renesas-fixes3-for-v4.13 for you to fetch changes up to fce8dc5e50e44d8f644e0f7854e6d7d518fedb68: ARM: shmobile: rcar-gen2: Fix deadlock in regulator quirk (2017-07-29 10:32:52 +0200) ---------------------------------------------------------------- Third Round of Renesas ARM Based SoC Fixes for v4.13 Fix deadlock in regulator quirk for R-Car Gen 2 SoCs The da9063/da9210 regulator quirk for R-Car Gen2 boards uses a bus notifier, and unregisters the notifier when it is no longer needed. However, a notifier must not be unregistered from within the call chain. This bug went unnoticed, as blocking_notifier_chain_unregister() didn't take the semaphore during early boot. This is no longer the case as of upstream commit 1c3c5eab171590f8 ("sched/core: Enable might_sleep() and smp_processor_id() checks early") and a deadlock occurs. ---------------------------------------------------------------- Geert Uytterhoeven (1): ARM: shmobile: rcar-gen2: Fix deadlock in regulator quirk arch/arm/mach-shmobile/regulator-quirk-rcar-gen2.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
