[S390] dasd: no High Performance FICON in 31-bit mode

The High Performance FICON feature is not supported in 31-bit mode,
no matter what the various flags say. So we need to check for the
CONFIG_64BIT option as well.

Signed-off-by: Stefan Weinhuber <wein@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index a41c940..81f8819 100644 (file)
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -2336,9 +2336,10 @@ static struct dasd_ccw_req *dasd_eckd_build_cp(struct dasd_device *startdev,
 {
        int tpm, cmdrtd, cmdwtd;
        int use_prefix;
-
-       struct dasd_eckd_private *private;
+#if defined(CONFIG_64BIT)
        int fcx_in_css, fcx_in_gneq, fcx_in_features;
+#endif
+       struct dasd_eckd_private *private;
        struct dasd_device *basedev;
        sector_t first_rec, last_rec;
        sector_t first_trk, last_trk;
@@ -2361,11 +2362,15 @@ static struct dasd_ccw_req *dasd_eckd_build_cp(struct dasd_device *startdev,
        last_offs = sector_div(last_trk, blk_per_trk);
        cdlspecial = (private->uses_cdl && first_rec < 2*blk_per_trk);
 
-       /* is transport mode supported ? */
+       /* is transport mode supported? */
+#if defined(CONFIG_64BIT)
        fcx_in_css = css_general_characteristics.fcx;
        fcx_in_gneq = private->gneq->reserved2[7] & 0x04;
        fcx_in_features = private->features.feature[40] & 0x80;
        tpm = fcx_in_css && fcx_in_gneq && fcx_in_features;
+#else
+       tpm = 0;
+#endif
 
        /* is read track data and write track data in command mode supported? */
        cmdrtd = private->features.feature[9] & 0x20;