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authorTejun Heo <htejun@gmail.com>2006-11-16 10:50:50 +0900
committerTejun Heo <htejun@gmail.com>2006-12-03 17:56:23 +0900
commit3d3cca37559e3ab2b574eda11ed5207ccdb8980a (patch)
treef3f3794cd7d68c681c69e85d50345a22aecc5eac /include
parent8070217d301d0ceab7d0c255d7b9d796256d37e7 (diff)
[PATCH] libata: implement ATA_FLAG_SETXFER_POLLING and use it in pata_via, take #2
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 While at it, kill now unused flag ATA_FLAG_SRST in pata_via. Signed-off-by: Tejun Heo <htejun@gmail.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/libata.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 6013211ac7d..8b57b6a806c 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -178,6 +178,7 @@ enum {
ATA_FLAG_DEBUGMSG = (1 << 13),
ATA_FLAG_DETECT_POLLING = (1 << 14), /* detect device presence by
* polling IDENTIFY */
+ ATA_FLAG_SETXFER_POLLING= (1 << 15), /* use polling for SETXFER */
/* The following flag belongs to ap->pflags but is kept in
* ap->flags because it's referenced in many LLDs and will be