[SCSI] ppa: fix for machines with highmem

ppa cannot handle highmem pages, and like imm, which already has
this patch, the device is slow, so performance is not a big issue,
so just force pages to be in low memory (hence mapped).

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

diff --git a/drivers/scsi/ppa.c b/drivers/scsi/ppa.c
index fee843f..108910f 100644 (file)
--- a/drivers/scsi/ppa.c
+++ b/drivers/scsi/ppa.c
@@ -982,6 +982,12 @@ static int device_check(ppa_struct *dev)
        return -ENODEV;
 }
 
+static int ppa_adjust_queue(struct scsi_device *device)
+{
+       blk_queue_bounce_limit(device->request_queue, BLK_BOUNCE_HIGH);
+       return 0;
+}
+
 static struct scsi_host_template ppa_template = {
        .module                 = THIS_MODULE,
        .proc_name              = "ppa",
@@ -997,6 +1003,7 @@ static struct scsi_host_template ppa_template = {
        .cmd_per_lun            = 1,
        .use_clustering         = ENABLE_CLUSTERING,
        .can_queue              = 1,
+       .slave_alloc            = ppa_adjust_queue,
 };
 
 /***************************************************************************