diff options
author | David S. Miller <davem@davemloft.net> | 2010-04-11 02:44:30 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2010-04-11 02:44:30 -0700 |
commit | 4a1032faac94ebbf647460ae3e06fc21146eb280 (patch) | |
tree | 7f31b97beb0406faa1523e619289ad0ab07c9787 /drivers/s390/char/zcore.c | |
parent | ae4e8d63b5619d4d95f1d2bfa2b836caa6e62d06 (diff) | |
parent | 0eddb519b9127c73d53db4bf3ec1d45b13f844d1 (diff) |
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Diffstat (limited to 'drivers/s390/char/zcore.c')
-rw-r--r-- | drivers/s390/char/zcore.c | 32 |
1 files changed, 3 insertions, 29 deletions
diff --git a/drivers/s390/char/zcore.c b/drivers/s390/char/zcore.c index 3438658b66b7..18daf16aa357 100644 --- a/drivers/s390/char/zcore.c +++ b/drivers/s390/char/zcore.c @@ -13,6 +13,7 @@ #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt #include <linux/init.h> +#include <linux/slab.h> #include <linux/miscdevice.h> #include <linux/debugfs.h> #include <asm/asm-offsets.h> @@ -141,33 +142,6 @@ static int memcpy_hsa_kernel(void *dest, unsigned long src, size_t count) return memcpy_hsa(dest, src, count, TO_KERNEL); } -static int memcpy_real(void *dest, unsigned long src, size_t count) -{ - unsigned long flags; - int rc = -EFAULT; - register unsigned long _dest asm("2") = (unsigned long) dest; - register unsigned long _len1 asm("3") = (unsigned long) count; - register unsigned long _src asm("4") = src; - register unsigned long _len2 asm("5") = (unsigned long) count; - - if (count == 0) - return 0; - flags = __raw_local_irq_stnsm(0xf8UL); /* switch to real mode */ - asm volatile ( - "0: mvcle %1,%2,0x0\n" - "1: jo 0b\n" - " lhi %0,0x0\n" - "2:\n" - EX_TABLE(1b,2b) - : "+d" (rc), "+d" (_dest), "+d" (_src), "+d" (_len1), - "+d" (_len2), "=m" (*((long*)dest)) - : "m" (*((long*)src)) - : "cc", "memory"); - __raw_local_irq_ssm(flags); - - return rc; -} - static int memcpy_real_user(void __user *dest, unsigned long src, size_t count) { static char buf[4096]; @@ -175,7 +149,7 @@ static int memcpy_real_user(void __user *dest, unsigned long src, size_t count) while (offs < count) { size = min(sizeof(buf), count - offs); - if (memcpy_real(buf, src + offs, size)) + if (memcpy_real(buf, (void *) src + offs, size)) return -EFAULT; if (copy_to_user(dest + offs, buf, size)) return -EFAULT; @@ -663,7 +637,7 @@ static int __init zcore_reipl_init(void) if (ipib_info.ipib < ZFCPDUMP_HSA_SIZE) rc = memcpy_hsa_kernel(ipl_block, ipib_info.ipib, PAGE_SIZE); else - rc = memcpy_real(ipl_block, ipib_info.ipib, PAGE_SIZE); + rc = memcpy_real(ipl_block, (void *) ipib_info.ipib, PAGE_SIZE); if (rc) { free_page((unsigned long) ipl_block); return rc; |