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authorHendrik Brueckner <brueckner@linux.vnet.ibm.com>2013-12-05 19:03:50 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2013-12-16 14:37:48 +0100
commit56e57a84a7856130f45009ce1713dc8ec8e59887 (patch)
tree7d6e48237e56db41364c0f3b0ca9564193d0de3c /drivers/s390
parent333cce91f384409fb6a3e656dc11e21e872c5ea2 (diff)
s390/sclp_early: Replace early_read_info_sccb with sccb_early
Replace early_read_info_sccb and use sccb_early instead. Also saves some memory. Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Reviewed-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/char/sclp_early.c12
1 files changed, 4 insertions, 8 deletions
diff --git a/drivers/s390/char/sclp_early.c b/drivers/s390/char/sclp_early.c
index e4e5b32c52f2..dc4ed04cbf50 100644
--- a/drivers/s390/char/sclp_early.c
+++ b/drivers/s390/char/sclp_early.c
@@ -35,8 +35,7 @@ struct read_info_sccb {
u8 _reserved5[4096 - 112]; /* 112-4095 */
} __packed __aligned(PAGE_SIZE);
-static __initdata struct read_info_sccb early_read_info_sccb;
-static __initdata char sccb_early[PAGE_SIZE] __aligned(PAGE_SIZE);
+static char sccb_early[PAGE_SIZE] __aligned(PAGE_SIZE) __initdata;
static unsigned long sclp_hsa_size;
static struct sclp_ipl_info sclp_ipl_info;
@@ -63,14 +62,12 @@ out:
return rc;
}
-static int __init sclp_read_info_early(void)
+static int __init sclp_read_info_early(struct read_info_sccb *sccb)
{
int rc, i;
- struct read_info_sccb *sccb;
sclp_cmdw_t commands[] = {SCLP_CMDW_READ_SCP_INFO_FORCED,
SCLP_CMDW_READ_SCP_INFO};
- sccb = &early_read_info_sccb;
for (i = 0; i < ARRAY_SIZE(commands); i++) {
do {
memset(sccb, 0, sizeof(*sccb));
@@ -92,12 +89,11 @@ static int __init sclp_read_info_early(void)
static void __init sclp_facilities_detect(void)
{
- struct read_info_sccb *sccb;
+ struct read_info_sccb *sccb = (void *) &sccb_early;
- if (sclp_read_info_early())
+ if (sclp_read_info_early(sccb))
return;
- sccb = &early_read_info_sccb;
sclp_facilities = sccb->facilities;
sclp_fac84 = sccb->fac84;
if (sccb->fac85 & 0x02)