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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2012-09-03 07:08:06 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2012-09-26 15:45:06 +0200 |
| commit | bad4c9c82d7ecb3b6ce4dbe25b7810018b52b8c1 (patch) | |
| tree | f874107085b5708719bda3bb2bcc5304e898de63 /arch/s390/kernel/setup.c | |
| parent | s390/mm: rename addressing_mode to s390_user_mode (diff) | |
| download | linux-bad4c9c82d7ecb3b6ce4dbe25b7810018b52b8c1.tar.xz linux-bad4c9c82d7ecb3b6ce4dbe25b7810018b52b8c1.zip | |
s390/mm: shorten addressing mode initialization
Shorten the code for addressing mode initialization. Also add missing
__init annotations, since this code is only used during kernel initialization.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/setup.c')
| -rw-r--r-- | arch/s390/kernel/setup.c | 28 |
1 files changed, 10 insertions, 18 deletions
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index 555f985226f5..7d27b0ab304b 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -305,7 +305,7 @@ early_param("vmalloc", parse_vmalloc); unsigned int s390_user_mode = PRIMARY_SPACE_MODE; EXPORT_SYMBOL_GPL(s390_user_mode); -static int set_amode_primary(void) +static void __init set_user_mode_primary(void) { psw_kernel_bits = (psw_kernel_bits & ~PSW_MASK_ASC) | PSW_ASC_HOME; psw_user_bits = (psw_user_bits & ~PSW_MASK_ASC) | PSW_ASC_PRIMARY; @@ -313,14 +313,7 @@ static int set_amode_primary(void) psw32_user_bits = (psw32_user_bits & ~PSW32_MASK_ASC) | PSW32_ASC_PRIMARY; #endif - - if (MACHINE_HAS_MVCOS) { - memcpy(&uaccess, &uaccess_mvcos_switch, sizeof(uaccess)); - return 1; - } else { - memcpy(&uaccess, &uaccess_pt, sizeof(uaccess)); - return 0; - } + uaccess = MACHINE_HAS_MVCOS ? uaccess_mvcos_switch : uaccess_pt; } static int __init early_parse_user_mode(char *p) @@ -335,16 +328,15 @@ static int __init early_parse_user_mode(char *p) } early_param("user_mode", early_parse_user_mode); -static void setup_addressing_mode(void) +static void __init setup_addressing_mode(void) { - if (s390_user_mode == PRIMARY_SPACE_MODE) { - if (set_amode_primary()) - pr_info("Address spaces switched, " - "mvcos available\n"); - else - pr_info("Address spaces switched, " - "mvcos not available\n"); - } + if (s390_user_mode != PRIMARY_SPACE_MODE) + return; + set_user_mode_primary(); + if (MACHINE_HAS_MVCOS) + pr_info("Address spaces switched, mvcos available\n"); + else + pr_info("Address spaces switched, mvcos not available\n"); } void *restart_stack __attribute__((__section__(".data"))); |