diff options
| author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2010-04-22 17:17:03 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2010-04-22 17:17:19 +0200 |
| commit | 818c272bd74b834c3ca9347c6a540c2ec880afdc (patch) | |
| tree | ce5353ca2f9b0786096508ff218f2615ecb06807 /drivers/s390/cio/css.c | |
| parent | [S390] dasd: fix endless loop in erp (diff) | |
| download | linux-818c272bd74b834c3ca9347c6a540c2ec880afdc.tar.xz linux-818c272bd74b834c3ca9347c6a540c2ec880afdc.zip | |
[S390] cio: allow enable_facility from outside init functions
Prepare chsc_enable_facility to be used from outside init functions.
Use static memory for the chsc call and protect its access by a
spinlock (although there is no concurrent usage).
Cc: <stable@kernel.org>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/s390/cio/css.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c index 2769da54f2b9..19635d47dede 100644 --- a/drivers/s390/cio/css.c +++ b/drivers/s390/cio/css.c @@ -870,15 +870,10 @@ static int __init css_bus_init(void) /* Try to enable MSS. */ ret = chsc_enable_facility(CHSC_SDA_OC_MSS); - switch (ret) { - case 0: /* Success. */ - max_ssid = __MAX_SSID; - break; - case -ENOMEM: - goto out; - default: + if (ret) max_ssid = 0; - } + else /* Success. */ + max_ssid = __MAX_SSID; ret = slow_subchannel_init(); if (ret) |