From e0ad784b65a64a617179598addb417d49dd4e08f Mon Sep 17 00:00:00 2001 From: Vaibhav Jain Date: Fri, 3 Jul 2015 10:41:20 +0530 Subject: [PATCH] powerpc/pseries: enable RTC class support A working rtc kernel driver is needed so that hwclock can synchronize system clock to rtc during shutdown/boot. We already have a powernv platform rtc driver located at drivers/rtc/rtc-opal.c. However it depends on CONFIG_RTC_CLASS which is disabled by default. Hence the driver isn't enabled and not compiled for the powernv kernel. We fix this by enabling rtc class support in pseries defconfig which enables this driver and compiles it into the pseries kernel. In case CONFIG_PPC_POWERNV is not enabled we fallback to 'Generic RTC support' driver which emulates the legacy 'PC RTC driver'. Signed-off-by: Vaibhav Jain Signed-off-by: Michael Ellerman --- arch/powerpc/configs/pseries_defconfig | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/configs/pseries_defconfig b/arch/powerpc/configs/pseries_defconfig index 0d9efcedaf34..2404271ec4ae 100644 --- a/arch/powerpc/configs/pseries_defconfig +++ b/arch/powerpc/configs/pseries_defconfig @@ -190,7 +190,8 @@ CONFIG_HVC_RTAS=y CONFIG_HVCS=m CONFIG_VIRTIO_CONSOLE=m CONFIG_IBM_BSR=m -CONFIG_GEN_RTC=y +CONFIG_RTC_CLASS=y +CONFIG_RTC_DRV_GENERIC=y CONFIG_RAW_DRIVER=y CONFIG_MAX_RAW_DEVS=1024 CONFIG_FB=y