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authorStefan Weinhuber <wein@de.ibm.com>2009-06-12 10:26:36 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2009-06-12 10:27:35 +0200
commit45b44d76d373e66d08e0c745dc82ff9123103588 (patch)
tree5a871000e9174f6be94a457625bcf1413b3386ea /drivers/s390
parentd0591485e15ccd908f91058f7da134248dcdbbb3 (diff)
[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>
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/block/dasd_eckd.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index a41c94053e64..81f8819eaf19 100644
--- 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;