ps3rom does:

scsi_for_each_sg(cmd, sgpnt, scsi_sg_count(cmd), k) {
        kaddr = kmap_atomic(sg_page(sgpnt), KM_IRQ0);

We cannot do something like that with the clustering enabled (or we
can use scsi_kmap_atomic_sg).

Signed-off-by: FUJITA Tomonori <[EMAIL PROTECTED]>
Cc: Geert Uytterhoeven <[EMAIL PROTECTED]>
Cc: James Bottomley <[EMAIL PROTECTED]>
---
 drivers/scsi/ps3rom.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/scsi/ps3rom.c b/drivers/scsi/ps3rom.c
index 0cd614a..90985cd 100644
--- a/drivers/scsi/ps3rom.c
+++ b/drivers/scsi/ps3rom.c
@@ -427,7 +427,7 @@ static struct scsi_host_template ps3rom_host_template = {
        .cmd_per_lun =          1,
        .emulated =             1,              /* only sg driver uses this */
        .max_sectors =          PS3ROM_MAX_SECTORS,
-       .use_clustering =       ENABLE_CLUSTERING,
+       .use_clustering =       DISABLE_CLUSTERING,
        .module =               THIS_MODULE,
 };
 
-- 
1.5.3.7

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