Messages in this thread | | | Date | Tue, 21 Nov 2023 16:36:25 -0600 | Subject | Re: [PATCH v4 1/5] RISC-V: Add stubs for sbi_console_putchar/getchar() | From | Samuel Holland <> |
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Hi Anup,
On 2023-11-17 9:38 PM, Anup Patel wrote: > The functions sbi_console_putchar() and sbi_console_getchar() are > not defined when CONFIG_RISCV_SBI_V01 is disabled so let us add > stub of these functions to avoid "#ifdef" on user side. > > Signed-off-by: Anup Patel <apatel@ventanamicro.com> > Reviewed-by: Andrew Jones <ajones@ventanamicro.com> > --- > arch/riscv/include/asm/sbi.h | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/arch/riscv/include/asm/sbi.h b/arch/riscv/include/asm/sbi.h > index 0892f4421bc4..66f3933c14f6 100644 > --- a/arch/riscv/include/asm/sbi.h > +++ b/arch/riscv/include/asm/sbi.h > @@ -271,8 +271,13 @@ struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0, > unsigned long arg3, unsigned long arg4, > unsigned long arg5); > > +#ifdef CONFIG_RISCV_SBI_V01 > void sbi_console_putchar(int ch); > int sbi_console_getchar(void); > +#else > +static inline void sbi_console_putchar(int ch) { } > +static inline int sbi_console_getchar(void) { return -ENOENT; }
"The SBI call returns the byte on success, or -1 for failure."
So -ENOENT is not really an appropriate value to return here.
Regards, Samuel
> +#endif > long sbi_get_mvendorid(void); > long sbi_get_marchid(void); > long sbi_get_mimpid(void);
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