matthieu castet wrote:
Hi,
Sorry for the delay.
Tejun Heo wrote:
This patch implements ATA_FLAG_SETXFER_POLLING and use in pata_via.
If this flag is set, transfer mode setting performed by polling not by
interrupt. This should help those controllers which raise interrupt
before the command is actually complete on SETXFER.
Rationale for this approach.
* uses existing facility and relatively simple
* no busy sleep in the interrupt handler
* updating drivers is easy
Signed-off-by: Tejun Heo <htejun@xxxxxxxxx>
---
Matthieu Castet, can you please test this patch? It's against
libata-dev#upstream, but -mm might work too. If you want a patch
against -mm, just let me know.
With the attached patch against 19-rc1-mm1 (I had to remove pata irq
handler), it seems to work (see the attached log).
* polling IDENTIFY */
+ ATA_FLAG_SETXFER_POLLING= (1 << 14), /* use polling for SETXFER */
opps i forgot to change ATA_FLAG_SETXFER_POLLING to
ATA_FLAG_SETXFER_POLLING (1<<15).
I suppose I need to retest that ?
Matthieu
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