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authorDave Airlie <airlied@redhat.com>2015-04-19 21:32:26 -0400
committerDave Airlie <airlied@redhat.com>2015-04-19 23:05:20 -0400
commit2c33ce009ca2389dbf0535d0672214d09738e35e (patch)
tree6186a6458c3c160385d794a23eaf07c786a9e61b /include/linux/compiler.h
parentcec32a47010647e8b0603726ebb75b990a4057a4 (diff)
parent09d51602cf84a1264946711dd4ea0dddbac599a1 (diff)
Merge Linus master into drm-next
The merge is clean, but the arm build fails afterwards, due to API changes in the regulator tree. I've included the patch into the merge to fix the build. Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'include/linux/compiler.h')
-rw-r--r--include/linux/compiler.h16
1 files changed, 0 insertions, 16 deletions
diff --git a/include/linux/compiler.h b/include/linux/compiler.h
index 1b45e4a0519b..0e41ca0e5927 100644
--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -192,29 +192,16 @@ void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect);
192 192
193#include <uapi/linux/types.h> 193#include <uapi/linux/types.h>
194 194
195static __always_inline void data_access_exceeds_word_size(void)
196#ifdef __compiletime_warning
197__compiletime_warning("data access exceeds word size and won't be atomic")
198#endif
199;
200
201static __always_inline void data_access_exceeds_word_size(void)
202{
203}
204
205static __always_inline void __read_once_size(const volatile void *p, void *res, int size) 195static __always_inline void __read_once_size(const volatile void *p, void *res, int size)
206{ 196{
207 switch (size) { 197 switch (size) {
208 case 1: *(__u8 *)res = *(volatile __u8 *)p; break; 198 case 1: *(__u8 *)res = *(volatile __u8 *)p; break;
209 case 2: *(__u16 *)res = *(volatile __u16 *)p; break; 199 case 2: *(__u16 *)res = *(volatile __u16 *)p; break;
210 case 4: *(__u32 *)res = *(volatile __u32 *)p; break; 200 case 4: *(__u32 *)res = *(volatile __u32 *)p; break;
211#ifdef CONFIG_64BIT
212 case 8: *(__u64 *)res = *(volatile __u64 *)p; break; 201 case 8: *(__u64 *)res = *(volatile __u64 *)p; break;
213#endif
214 default: 202 default:
215 barrier(); 203 barrier();
216 __builtin_memcpy((void *)res, (const void *)p, size); 204 __builtin_memcpy((void *)res, (const void *)p, size);
217 data_access_exceeds_word_size();
218 barrier(); 205 barrier();
219 } 206 }
220} 207}
@@ -225,13 +212,10 @@ static __always_inline void __write_once_size(volatile void *p, void *res, int s
225 case 1: *(volatile __u8 *)p = *(__u8 *)res; break; 212 case 1: *(volatile __u8 *)p = *(__u8 *)res; break;
226 case 2: *(volatile __u16 *)p = *(__u16 *)res; break; 213 case 2: *(volatile __u16 *)p = *(__u16 *)res; break;
227 case 4: *(volatile __u32 *)p = *(__u32 *)res; break; 214 case 4: *(volatile __u32 *)p = *(__u32 *)res; break;
228#ifdef CONFIG_64BIT
229 case 8: *(volatile __u64 *)p = *(__u64 *)res; break; 215 case 8: *(volatile __u64 *)p = *(__u64 *)res; break;
230#endif
231 default: 216 default:
232 barrier(); 217 barrier();
233 __builtin_memcpy((void *)p, (const void *)res, size); 218 __builtin_memcpy((void *)p, (const void *)res, size);
234 data_access_exceeds_word_size();
235 barrier(); 219 barrier();
236 } 220 }
237} 221}