diff options
| author | Leif Lindholm <leif.lindholm@linaro.org> | 2016-09-27 23:54:12 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-09-28 17:43:15 +0200 |
| commit | d503187b6cc4e41c21c02e695e0e7b5acdd066de (patch) | |
| tree | 2d4df7a30f4d7168044bef7e3bb77c6a8cb788e2 | |
| parent | 094a32626f904f92beda174154daca3fe4455890 (diff) | |
of/serial: move earlycon early_param handling to serial
We have multiple "earlycon" early_param handlers - merge the DT one into
the main earlycon one. It's a cleanup that also will be useful
to defer setting up DT console until ACPI/DT decision is made.
Rename the exported function to avoid clashing with the function from
arch/microblaze/kernel/prom.c
Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
Signed-off-by: Aleksey Makarov <aleksey.makarov@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Tested-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Tested-by: Christopher Covington <cov@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/of/fdt.c | 11 | ||||
| -rw-r--r-- | drivers/tty/serial/earlycon.c | 2 | ||||
| -rw-r--r-- | include/linux/of_fdt.h | 3 |
3 files changed, 5 insertions, 11 deletions
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c index 085c6389afd1..c89d5d231a0e 100644 --- a/drivers/of/fdt.c +++ b/drivers/of/fdt.c @@ -924,7 +924,7 @@ static inline void early_init_dt_check_for_initrd(unsigned long node) #ifdef CONFIG_SERIAL_EARLYCON -static int __init early_init_dt_scan_chosen_serial(void) +int __init early_init_dt_scan_chosen_stdout(void) { int offset; const char *p, *q, *options = NULL; @@ -968,15 +968,6 @@ static int __init early_init_dt_scan_chosen_serial(void) } return -ENODEV; } - -static int __init setup_of_earlycon(char *buf) -{ - if (buf) - return 0; - - return early_init_dt_scan_chosen_serial(); -} -early_param("earlycon", setup_of_earlycon); #endif /** diff --git a/drivers/tty/serial/earlycon.c b/drivers/tty/serial/earlycon.c index 3940280afa9c..836cad222fcc 100644 --- a/drivers/tty/serial/earlycon.c +++ b/drivers/tty/serial/earlycon.c @@ -208,7 +208,7 @@ static int __init param_setup_earlycon(char *buf) * don't generate a warning from parse_early_params() in that case */ if (!buf || !buf[0]) - return 0; + return early_init_dt_scan_chosen_stdout(); err = setup_earlycon(buf); if (err == -ENOENT || err == -EALREADY) diff --git a/include/linux/of_fdt.h b/include/linux/of_fdt.h index 26c3302ae58f..4341f32516d8 100644 --- a/include/linux/of_fdt.h +++ b/include/linux/of_fdt.h @@ -14,6 +14,7 @@ #include <linux/types.h> #include <linux/init.h> +#include <linux/errno.h> /* Definitions used by the flattened device tree */ #define OF_DT_HEADER 0xd00dfeed /* marker */ @@ -66,6 +67,7 @@ extern int early_init_dt_scan_chosen(unsigned long node, const char *uname, int depth, void *data); extern int early_init_dt_scan_memory(unsigned long node, const char *uname, int depth, void *data); +extern int early_init_dt_scan_chosen_stdout(void); extern void early_init_fdt_scan_reserved_mem(void); extern void early_init_fdt_reserve_self(void); extern void early_init_dt_add_memory_arch(u64 base, u64 size); @@ -94,6 +96,7 @@ extern void early_get_first_memblock_info(void *, phys_addr_t *); extern u64 of_flat_dt_translate_address(unsigned long node); extern void of_fdt_limit_memory(int limit); #else /* CONFIG_OF_FLATTREE */ +static inline int early_init_dt_scan_chosen_stdout(void) { return -ENODEV; } static inline void early_init_fdt_scan_reserved_mem(void) {} static inline void early_init_fdt_reserve_self(void) {} static inline const char *of_flat_dt_get_machine_name(void) { return NULL; } |