[PATCH] dmaengine: at_hdmac: pause: no need to wait for FIFO empty
Sergei Shtylyov
sshtylyov at mvista.com
Tue May 10 07:56:15 EDT 2011
Hello.
On 09-05-2011 20:11, Nicolas Ferre wrote:
> The addition of the pause feature to atc_control an active wait was introduced
> to check the FIFO empty event.
Couldn't parse this -- did you forget "with"at the start of the statement?
> This event was not always happening and
> a timout contition was needed.
> But, in some cases, this event depend on the peripheral connected to the
> channel that is paused: FIFO becomes empty if the peripheral consumes data.
> The timeout is pretty difficult to evaluate. Moreover, this check is not
> needed.
> In conclusion, it seems sensible to entirely remove the checking of
> "FIFO empty" status when pausing.
> Signed-off-by: Nicolas Ferre<nicolas.ferre at atmel.com>
WBR, Sergei
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