Hello.
On 7/12/2016 4:28 PM, tom.ty89@xxxxxxxxx wrote:
From: Tom Yan <tom.ty89@xxxxxxxxx>
Signed-off-by: Tom Yan <tom.ty89@xxxxxxxxx>
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index bfec66f..6f7c626 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -2424,10 +2424,13 @@ static void modecpy(u8 *dest, const u8 *src, int n, bool changeable)
static unsigned int ata_msense_caching(u16 *id, u8 *buf, bool changeable)
{
modecpy(buf, def_cache_mpage, sizeof(def_cache_mpage), changeable);
- if (changeable || ata_id_wcache_enabled(id))
- buf[2] |= (1 << 2); /* write cache enable */
- if (!changeable && !ata_id_rahead_enabled(id))
- buf[12] |= (1 << 5); /* disable read ahead */
+ if (changeable) {
+ buf[2] |= 1 << 2; /* ata_mselect_caching() */
+ }
+ else {
CodingStyle: } else {
+ buf[2] |= ata_id_wcache_enabled(id) << 2; /* write cache enable */
+ buf[12] |= !ata_id_rahead_enabled(id) << 5; /* disable read ahead */
+ }
return sizeof(def_cache_mpage);
}
MBR, Sergei
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