diff options
Diffstat (limited to 'kernel')
-rw-r--r-- | kernel/resource.c | 32 |
1 files changed, 16 insertions, 16 deletions
diff --git a/kernel/resource.c b/kernel/resource.c index dc15686b7a77..af96c1e4b54b 100644 --- a/kernel/resource.c +++ b/kernel/resource.c | |||
@@ -308,37 +308,37 @@ static int find_resource(struct resource *root, struct resource *new, | |||
308 | void *alignf_data) | 308 | void *alignf_data) |
309 | { | 309 | { |
310 | struct resource *this = root->child; | 310 | struct resource *this = root->child; |
311 | resource_size_t start, end; | 311 | struct resource tmp = *new; |
312 | 312 | ||
313 | start = root->start; | 313 | tmp.start = root->start; |
314 | /* | 314 | /* |
315 | * Skip past an allocated resource that starts at 0, since the assignment | 315 | * Skip past an allocated resource that starts at 0, since the assignment |
316 | * of this->start - 1 to new->end below would cause an underflow. | 316 | * of this->start - 1 to tmp->end below would cause an underflow. |
317 | */ | 317 | */ |
318 | if (this && this->start == 0) { | 318 | if (this && this->start == 0) { |
319 | start = this->end + 1; | 319 | tmp.start = this->end + 1; |
320 | this = this->sibling; | 320 | this = this->sibling; |
321 | } | 321 | } |
322 | for(;;) { | 322 | for(;;) { |
323 | if (this) | 323 | if (this) |
324 | end = this->start - 1; | 324 | tmp.end = this->start - 1; |
325 | else | 325 | else |
326 | end = root->end; | 326 | tmp.end = root->end; |
327 | if (start < min) | 327 | if (tmp.start < min) |
328 | start = min; | 328 | tmp.start = min; |
329 | if (end > max) | 329 | if (tmp.end > max) |
330 | end = max; | 330 | tmp.end = max; |
331 | start = ALIGN(start, align); | 331 | tmp.start = ALIGN(tmp.start, align); |
332 | if (alignf) | 332 | if (alignf) |
333 | alignf(alignf_data, new, size, align); | 333 | alignf(alignf_data, &tmp, size, align); |
334 | if (start < end && end - start >= size - 1) { | 334 | if (tmp.start < tmp.end && tmp.end - tmp.start >= size - 1) { |
335 | new->start = start; | 335 | new->start = tmp.start; |
336 | new->end = start + size - 1; | 336 | new->end = tmp.start + size - 1; |
337 | return 0; | 337 | return 0; |
338 | } | 338 | } |
339 | if (!this) | 339 | if (!this) |
340 | break; | 340 | break; |
341 | start = this->end + 1; | 341 | tmp.start = this->end + 1; |
342 | this = this->sibling; | 342 | this = this->sibling; |
343 | } | 343 | } |
344 | return -EBUSY; | 344 | return -EBUSY; |