firewire: fw-sbp2: implement max sectors limit for some old bridges
This currently only affects one bridge in the hardwired blacklist.
I don't own one of those, hence haven't tested it.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
diff --git a/drivers/firewire/fw-sbp2.c b/drivers/firewire/fw-sbp2.c
index 851c2da..49f7fd5 100644
--- a/drivers/firewire/fw-sbp2.c
+++ b/drivers/firewire/fw-sbp2.c
@@ -34,6 +34,7 @@
#include <linux/device.h>
#include <linux/scatterlist.h>
#include <linux/dma-mapping.h>
+#include <linux/blkdev.h>
#include <linux/timer.h>
#include <scsi/scsi.h>
@@ -1080,7 +1081,8 @@
fw_notify("setting fix_capacity for %s\n", unit->device.bus_id);
sdev->fix_capacity = 1;
}
-
+ if (sd->workarounds & SBP2_WORKAROUND_128K_MAX_TRANS)
+ blk_queue_max_sectors(sdev->request_queue, 128 * 1024 / 512);
return 0;
}