ACK: [PATCH] lib: fwts_cmos: remove cli/sti assembler from cmos reading

[Alex Hung]

On 2020-11-10 10:20 a.m., Colin King wrote:
> From: Colin Ian King <colin.king at canonical.com>
> 
> Recent Linux kernel config defaults will not allow messing around with
> the interrupt disable/enable from userspace and will segfault the code.
> Remove these as they don't really need to be used and we just need to
> remember that updates to CMOS data may occur under kernel control
> while it is being read by fwts.
> 
> Signed-off-by: Colin Ian King <colin.king at canonical.com>
> ---
>  src/lib/src/fwts_cmos.c | 2 --
>  1 file changed, 2 deletions(-)
> 
> diff --git a/src/lib/src/fwts_cmos.c b/src/lib/src/fwts_cmos.c
> index b40c8100..6b285eac 100644
> --- a/src/lib/src/fwts_cmos.c
> +++ b/src/lib/src/fwts_cmos.c
> @@ -47,7 +47,6 @@ int fwts_cmos_read(const uint8_t offset, uint8_t *value)
>  		goto tidy0x80;
>  	}
>  
> -	asm("cli");
>  	/* specify offset to read */
>  	if (fwts_outb(offset, 0x70) != FWTS_OK) {
>  		ret = FWTS_ERROR;
> @@ -64,7 +63,6 @@ int fwts_cmos_read(const uint8_t offset, uint8_t *value)
>  	if (fwts_inb(0x71, value) != FWTS_OK)
>  		ret = FWTS_ERROR;
>  tidy:
> -	asm("sti");
>  	(void)iopl(0);
>  tidy0x80:
>  	(void)ioperm(0x80, 1, 0);
> 

Acked-by: Alex Hung <alex.hung at canonical.com>