On 23/10/2019 17:01:58+0200, Arnd Bergmann wrote:
> There are two EFI RTC drivers, the original drivers/char/efirtc.c
> driver and the more modern drivers/rtc/rtc-efi.c.
>
> Both implement the same interface, but the new one does so
> in a more portable way.
>
> Move everything over to that one and remove the old one.
>
> Cc: linux-i...@vger.kernel.org
> Cc: Fenghua Yu
> Cc: Tony Luck
> Cc: Stephane Eranian
> Signed-off-by: Arnd Bergmann
Acked-by: Alexandre Belloni
> ---
> This was last discussed in early 2018 in
> https://lore.kernel.org/lkml/CAK8P3a0QZNY+K+V1HG056xCerz=_l2jh5ufz+2lwkdqkw5z...@mail.gmail.com/
>
> Nobody ever replied there, so let's try this instead.
> If there is any reason to keep the driver after all,
> please let us know.
> ---
> arch/ia64/configs/bigsur_defconfig| 3 +-
> arch/ia64/configs/generic_defconfig | 3 +-
> arch/ia64/configs/gensparse_defconfig | 3 +-
> arch/ia64/configs/tiger_defconfig | 3 +-
> arch/ia64/configs/zx1_defconfig | 3 +-
> drivers/char/Kconfig | 4 -
> drivers/char/Makefile | 1 -
> drivers/char/efirtc.c | 366 --
> include/linux/miscdevice.h| 2 +-
> 9 files changed, 11 insertions(+), 377 deletions(-)
> delete mode 100644 drivers/char/efirtc.c
>
> diff --git a/arch/ia64/configs/bigsur_defconfig
> b/arch/ia64/configs/bigsur_defconfig
> index b630bd7351c4..f3ba813a5b80 100644
> --- a/arch/ia64/configs/bigsur_defconfig
> +++ b/arch/ia64/configs/bigsur_defconfig
> @@ -57,7 +57,8 @@ CONFIG_SERIAL_8250_CONSOLE=y
> CONFIG_SERIAL_8250_EXTENDED=y
> CONFIG_SERIAL_8250_SHARE_IRQ=y
> # CONFIG_HW_RANDOM is not set
> -CONFIG_EFI_RTC=y
> +CONFIG_RTC_CLASS=y
> +CONFIG_RTC_DRV_EFI=y
> CONFIG_I2C=y
> CONFIG_I2C_CHARDEV=y
> CONFIG_AGP=m
> diff --git a/arch/ia64/configs/generic_defconfig
> b/arch/ia64/configs/generic_defconfig
> index 661d90b3e148..cb267a07c57f 100644
> --- a/arch/ia64/configs/generic_defconfig
> +++ b/arch/ia64/configs/generic_defconfig
> @@ -94,7 +94,8 @@ CONFIG_SERIAL_8250_NR_UARTS=6
> CONFIG_SERIAL_8250_EXTENDED=y
> CONFIG_SERIAL_8250_SHARE_IRQ=y
> # CONFIG_HW_RANDOM is not set
> -CONFIG_EFI_RTC=y
> +CONFIG_RTC_CLASS=y
> +CONFIG_RTC_DRV_EFI=y
> CONFIG_RAW_DRIVER=m
> CONFIG_HPET=y
> CONFIG_AGP=m
> diff --git a/arch/ia64/configs/gensparse_defconfig
> b/arch/ia64/configs/gensparse_defconfig
> index 7844e6a956a4..7e25f2f031b6 100644
> --- a/arch/ia64/configs/gensparse_defconfig
> +++ b/arch/ia64/configs/gensparse_defconfig
> @@ -82,7 +82,8 @@ CONFIG_SERIAL_8250_NR_UARTS=6
> CONFIG_SERIAL_8250_EXTENDED=y
> CONFIG_SERIAL_8250_SHARE_IRQ=y
> # CONFIG_HW_RANDOM is not set
> -CONFIG_EFI_RTC=y
> +CONFIG_RTC_CLASS=y
> +CONFIG_RTC_DRV_EFI=y
> CONFIG_RAW_DRIVER=m
> CONFIG_HPET=y
> CONFIG_AGP=m
> diff --git a/arch/ia64/configs/tiger_defconfig
> b/arch/ia64/configs/tiger_defconfig
> index 1d6e2a01452b..3f486d5bdc2d 100644
> --- a/arch/ia64/configs/tiger_defconfig
> +++ b/arch/ia64/configs/tiger_defconfig
> @@ -86,7 +86,8 @@ CONFIG_SERIAL_8250_NR_UARTS=6
> CONFIG_SERIAL_8250_EXTENDED=y
> CONFIG_SERIAL_8250_SHARE_IRQ=y
> # CONFIG_HW_RANDOM is not set
> -CONFIG_EFI_RTC=y
> +CONFIG_RTC_CLASS=y
> +CONFIG_RTC_DRV_EFI=y
> CONFIG_RAW_DRIVER=m
> CONFIG_HPET=y
> CONFIG_AGP=m
> diff --git a/arch/ia64/configs/zx1_defconfig b/arch/ia64/configs/zx1_defconfig
> index 8c92e095f8bb..70788a500448 100644
> --- a/arch/ia64/configs/zx1_defconfig
> +++ b/arch/ia64/configs/zx1_defconfig
> @@ -69,7 +69,8 @@ CONFIG_SERIAL_8250_NR_UARTS=8
> CONFIG_SERIAL_8250_EXTENDED=y
> CONFIG_SERIAL_8250_SHARE_IRQ=y
> # CONFIG_HW_RANDOM is not set
> -CONFIG_EFI_RTC=y
> +CONFIG_RTC_CLASS=y
> +CONFIG_RTC_DRV_EFI=y
> CONFIG_I2C_CHARDEV=y
> CONFIG_AGP=y
> CONFIG_AGP_HP_ZX1=y
> diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
> index df0fc997dc3e..dabbf3f519c6 100644
> --- a/drivers/char/Kconfig
> +++ b/drivers/char/Kconfig
> @@ -297,10 +297,6 @@ config JS_RTC
> To compile this driver as a module, choose M here: the
> module will be called js-rtc.
>
> -config EFI_RTC
> - bool "EFI Real Time Clock Services"
> - depends on IA64
> -
> endif # RTC_LIB
>
> config DTLK
> diff --git a/drivers/char/Makefile b/drivers/char/Makefile
> index 7c5ea6f9df14..abe3138b1f5a 100644
> --- a/drivers/char/Makefile
> +++ b/drivers/char/Makefile
> @@ -22,7 +22,6 @@ obj-$(CONFIG_APPLICOM) += applicom.o
> obj-$(CONFIG_SONYPI) += sonypi.o
> obj-$(CONFIG_RTC)+= rtc.o
> obj-$(CONFIG_HPET) += hpet.o
> -obj-$(CONFIG_EFI_RTC)+= efirtc.o
> obj-$(CONFIG_XILINX_HWICAP) += xilinx_hwicap/
> obj-$(CONFIG_NVRAM) += nvram.o
> obj-$(CONFIG_TOSHIBA)+= toshiba.o
> diff --git a/drivers/char/efirtc.c b/drivers/char/efirtc.c
> deleted file mode 100644
> index 4f73064d0c6f..
> --- a/drivers/char/efirtc.c
> +++ /dev/null
> @@ -1,366 +0,0 @@
> -// SPDX-License-Iden
