Commits
Bartlomiej Zolnierkiewicz committed 497ab3b30c7
ARM: EXYNOS: fix CPU1 hotplug on Exynos3250 CPU1 hotplug may hang when AFTR is used. Fix it by: - setting AUTOWAKEUP_EN bit in ARM_COREx_CONFIGURATION register in exynos_cpu_power_up() - not clearing reserved bits of ARM_COREx_CONFIGURATION register in exynos_cpu_power_down() - waiting while an undocumented register 0x0908 becomes non-zero in exynos_core_restart() - using dsb_sev() instead of IPI in exynos_boot_secondary() on Exynos3250 This patch also fixes hotplug issues during resume from S2R: $ echo mem > /sys/power/state [ 156.517266] Disabling non-boot CPUs ... [ 156.517781] IRQ18 no longer affine to CPU1 [ 156.518043] CPU1: shutdown [ 156.544718] Enabling non-boot CPUs ... [ 156.554925] CPU1: Software reset [ 158.552631] CPU1: failed to come online [ 158.552753] Error taking CPU1 up: -5 Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Tested-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Tested-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Kukjin Kim <kgene@kernel.org>