diff options
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/block/dcssblk.c | 21 | ||||
| -rw-r--r-- | drivers/s390/char/sclp_early.c | 8 |
2 files changed, 17 insertions, 12 deletions
diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c index 7f900229404d..96128cb009f3 100644 --- a/drivers/s390/block/dcssblk.c +++ b/drivers/s390/block/dcssblk.c @@ -28,8 +28,8 @@ static int dcssblk_open(struct block_device *bdev, fmode_t mode); static void dcssblk_release(struct gendisk *disk, fmode_t mode); static void dcssblk_make_request(struct request_queue *q, struct bio *bio); -static int dcssblk_direct_access(struct block_device *bdev, sector_t secnum, - void **kaddr, unsigned long *pfn); +static long dcssblk_direct_access(struct block_device *bdev, sector_t secnum, + void **kaddr, unsigned long *pfn, long size); static char dcssblk_segments[DCSSBLK_PARM_LEN] = "\0"; @@ -877,25 +877,22 @@ fail: bio_io_error(bio); } -static int +static long dcssblk_direct_access (struct block_device *bdev, sector_t secnum, - void **kaddr, unsigned long *pfn) + void **kaddr, unsigned long *pfn, long size) { struct dcssblk_dev_info *dev_info; - unsigned long pgoff; + unsigned long offset, dev_sz; dev_info = bdev->bd_disk->private_data; if (!dev_info) return -ENODEV; - if (secnum % (PAGE_SIZE/512)) - return -EINVAL; - pgoff = secnum / (PAGE_SIZE / 512); - if ((pgoff+1)*PAGE_SIZE-1 > dev_info->end - dev_info->start) - return -ERANGE; - *kaddr = (void *) (dev_info->start+pgoff*PAGE_SIZE); + dev_sz = dev_info->end - dev_info->start; + offset = secnum * 512; + *kaddr = (void *) (dev_info->start + offset); *pfn = virt_to_phys(*kaddr) >> PAGE_SHIFT; - return 0; + return dev_sz - offset; } static void diff --git a/drivers/s390/char/sclp_early.c b/drivers/s390/char/sclp_early.c index daf6cd5079ec..1efa4fdb7fe2 100644 --- a/drivers/s390/char/sclp_early.c +++ b/drivers/s390/char/sclp_early.c @@ -54,6 +54,7 @@ static unsigned long sclp_hsa_size; static unsigned int sclp_max_cpu; static struct sclp_ipl_info sclp_ipl_info; static unsigned char sclp_siif; +static unsigned char sclp_sigpif; static u32 sclp_ibc; static unsigned int sclp_mtid; static unsigned int sclp_mtid_cp; @@ -140,6 +141,7 @@ static void __init sclp_facilities_detect(struct read_info_sccb *sccb) if (boot_cpu_address != cpue->core_id) continue; sclp_siif = cpue->siif; + sclp_sigpif = cpue->sigpif; break; } @@ -186,6 +188,12 @@ int sclp_has_siif(void) } EXPORT_SYMBOL(sclp_has_siif); +int sclp_has_sigpif(void) +{ + return sclp_sigpif; +} +EXPORT_SYMBOL(sclp_has_sigpif); + unsigned int sclp_get_ibc(void) { return sclp_ibc; |