Re: [PATCH 1/6] Restore udelay in poll mode

[Len Brown <lenb@kernel.org>]

1-6 added to acpi-test

thanks,
-Len

On Friday 21 March 2008, Alexey Starikovskiy wrote:
> Allow EC to serve keyboard even then we polling it.
> 
> Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
> ---
> 
>  drivers/acpi/ec.c |    2 ++
>  1 files changed, 2 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
> index 7222a18..828c752 100644
> --- a/drivers/acpi/ec.c
> +++ b/drivers/acpi/ec.c
> @@ -73,6 +73,7 @@ enum ec_event {
>  
>  #define ACPI_EC_DELAY		500	/* Wait 500ms max. during EC ops */
>  #define ACPI_EC_UDELAY_GLK	1000	/* Wait 1ms max. to get global lock */
> +#define ACPI_EC_UDELAY		100	/* Wait 100us before polling EC again */
>  
>  enum {
>  	EC_FLAGS_WAIT_GPE = 0,		/* Don't check status until GPE arrives */
> @@ -227,6 +228,7 @@ static int acpi_ec_wait(struct acpi_ec *ec, enum ec_event event, int force_poll)
>  		while (time_before(jiffies, delay)) {
>  			if (acpi_ec_check_status(ec, event))
>  				goto end;
> +			udelay(ACPI_EC_UDELAY);
>  		}
>  	}
>  	pr_err(PREFIX "acpi_ec_wait timeout,"
> 
> --
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