diff options
Diffstat (limited to 'arch/s390/hypfs/hypfs_sprp.c')
| -rw-r--r-- | arch/s390/hypfs/hypfs_sprp.c | 21 |
1 files changed, 8 insertions, 13 deletions
diff --git a/arch/s390/hypfs/hypfs_sprp.c b/arch/s390/hypfs/hypfs_sprp.c index 7d9fb496d155..a72576221cab 100644 --- a/arch/s390/hypfs/hypfs_sprp.c +++ b/arch/s390/hypfs/hypfs_sprp.c @@ -7,7 +7,6 @@ * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> */ -#include <linux/compat.h> #include <linux/errno.h> #include <linux/gfp.h> #include <linux/string.h> @@ -25,14 +24,13 @@ static inline unsigned long __hypfs_sprp_diag304(void *data, unsigned long cmd) { - register unsigned long _data asm("2") = (unsigned long) data; - register unsigned long _rc asm("3"); - register unsigned long _cmd asm("4") = cmd; + union register_pair r1 = { .even = virt_to_phys(data), }; - asm volatile("diag %1,%2,0x304\n" - : "=d" (_rc) : "d" (_data), "d" (_cmd) : "memory"); - - return _rc; + asm volatile("diag %[r1],%[r3],0x304" + : [r1] "+&d" (r1.pair) + : [r3] "d" (cmd) + : "memory"); + return r1.odd; } static unsigned long hypfs_sprp_diag304(void *data, unsigned long cmd) @@ -75,7 +73,7 @@ static int __hypfs_sprp_ioctl(void __user *user_area) int rc; rc = -ENOMEM; - data = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA); + data = (void *)get_zeroed_page(GFP_KERNEL); diag304 = kzalloc(sizeof(*diag304), GFP_KERNEL); if (!data || !diag304) goto out; @@ -117,10 +115,7 @@ static long hypfs_sprp_ioctl(struct file *file, unsigned int cmd, if (!capable(CAP_SYS_ADMIN)) return -EACCES; - if (is_compat_task()) - argp = compat_ptr(arg); - else - argp = (void __user *) arg; + argp = (void __user *)arg; switch (cmd) { case HYPFS_DIAG304: return __hypfs_sprp_ioctl(argp); |