diff options
Diffstat (limited to 'drivers/s390/char/sclp_tty.c')
| -rw-r--r-- | drivers/s390/char/sclp_tty.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/s390/char/sclp_tty.c b/drivers/s390/char/sclp_tty.c index 892c18d2f87e..0a92d08830e7 100644 --- a/drivers/s390/char/sclp_tty.c +++ b/drivers/s390/char/sclp_tty.c @@ -490,6 +490,17 @@ static const struct tty_operations sclp_ops = { .flush_buffer = sclp_tty_flush_buffer, }; +/* Release allocated pages. */ +static void __init __sclp_tty_free_pages(void) +{ + struct list_head *page, *p; + + list_for_each_safe(page, p, &sclp_tty_pages) { + list_del(page); + free_page((unsigned long)page); + } +} + static int __init sclp_tty_init(void) { @@ -499,7 +510,7 @@ sclp_tty_init(void) int rc; /* z/VM multiplexes the line mode output on the 32xx screen */ - if (MACHINE_IS_VM && !CONSOLE_IS_SCLP) + if (machine_is_vm() && !CONSOLE_IS_SCLP) return 0; if (!sclp.has_linemode) return 0; @@ -516,6 +527,7 @@ sclp_tty_init(void) for (i = 0; i < MAX_KMEM_PAGES; i++) { page = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA); if (page == NULL) { + __sclp_tty_free_pages(); tty_driver_kref_put(driver); return -ENOMEM; } @@ -524,7 +536,7 @@ sclp_tty_init(void) timer_setup(&sclp_tty_timer, sclp_tty_timeout, 0); sclp_ttybuf = NULL; sclp_tty_buffer_count = 0; - if (MACHINE_IS_VM) { + if (machine_is_vm()) { /* case input lines to lowercase */ sclp_tty_tolower = 1; } |