aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm/common/dmabounce.c
diff options
context:
space:
mode:
authorRussell King <rmk@dyn-67.arm.linux.org.uk>2008-09-25 17:23:31 -0400
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-09-29 05:41:02 -0400
commit3216a97bb0d5166ec5795aa3db1c3a02415ac060 (patch)
tree1e2ecda2ab14a76e3ce785fcb0f531976c6f6036 /arch/arm/common/dmabounce.c
parent125ab12acf64ff86b55d20e14db20becd917b7c4 (diff)
[ARM] dma: coding style cleanups
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/common/dmabounce.c')
-rw-r--r--arch/arm/common/dmabounce.c48
1 files changed, 16 insertions, 32 deletions
diff --git a/arch/arm/common/dmabounce.c b/arch/arm/common/dmabounce.c
index d4b0c608fdee..22aec95c9863 100644
--- a/arch/arm/common/dmabounce.c
+++ b/arch/arm/common/dmabounce.c
@@ -154,9 +154,7 @@ alloc_safe_buffer(struct dmabounce_device_info *device_info, void *ptr,
154#endif 154#endif
155 155
156 write_lock_irqsave(&device_info->lock, flags); 156 write_lock_irqsave(&device_info->lock, flags);
157
158 list_add(&buf->node, &device_info->safe_buffers); 157 list_add(&buf->node, &device_info->safe_buffers);
159
160 write_unlock_irqrestore(&device_info->lock, flags); 158 write_unlock_irqrestore(&device_info->lock, flags);
161 159
162 return buf; 160 return buf;
@@ -220,8 +218,7 @@ static struct safe_buffer *find_safe_buffer_dev(struct device *dev,
220 return find_safe_buffer(dev->archdata.dmabounce, dma_addr); 218 return find_safe_buffer(dev->archdata.dmabounce, dma_addr);
221} 219}
222 220
223static inline dma_addr_t 221static inline dma_addr_t map_single(struct device *dev, void *ptr, size_t size,
224map_single(struct device *dev, void *ptr, size_t size,
225 enum dma_data_direction dir) 222 enum dma_data_direction dir)
226{ 223{
227 struct dmabounce_device_info *device_info = dev->archdata.dmabounce; 224 struct dmabounce_device_info *device_info = dev->archdata.dmabounce;
@@ -285,9 +282,8 @@ map_single(struct device *dev, void *ptr, size_t size,
285 return dma_addr; 282 return dma_addr;
286} 283}
287 284
288static inline void 285static inline void unmap_single(struct device *dev, dma_addr_t dma_addr,
289unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size, 286 size_t size, enum dma_data_direction dir)
290 enum dma_data_direction dir)
291{ 287{
292 struct safe_buffer *buf = find_safe_buffer_dev(dev, dma_addr, "unmap"); 288 struct safe_buffer *buf = find_safe_buffer_dev(dev, dma_addr, "unmap");
293 289
@@ -332,25 +328,20 @@ unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
332 * substitute the safe buffer for the unsafe one. 328 * substitute the safe buffer for the unsafe one.
333 * (basically move the buffer from an unsafe area to a safe one) 329 * (basically move the buffer from an unsafe area to a safe one)
334 */ 330 */
335dma_addr_t 331dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size,
336dma_map_single(struct device *dev, void *ptr, size_t size,
337 enum dma_data_direction dir) 332 enum dma_data_direction dir)
338{ 333{
339 dma_addr_t dma_addr;
340
341 dev_dbg(dev, "%s(ptr=%p,size=%d,dir=%x)\n", 334 dev_dbg(dev, "%s(ptr=%p,size=%d,dir=%x)\n",
342 __func__, ptr, size, dir); 335 __func__, ptr, size, dir);
343 336
344 BUG_ON(dir == DMA_NONE); 337 BUG_ON(dir == DMA_NONE);
345 338
346 dma_addr = map_single(dev, ptr, size, dir); 339 return map_single(dev, ptr, size, dir);
347
348 return dma_addr;
349} 340}
341EXPORT_SYMBOL(dma_map_single);
350 342
351dma_addr_t dma_map_page(struct device *dev, struct page *page, 343dma_addr_t dma_map_page(struct device *dev, struct page *page,
352 unsigned long offset, size_t size, 344 unsigned long offset, size_t size, enum dma_data_direction dir)
353 enum dma_data_direction dir)
354{ 345{
355 dev_dbg(dev, "%s(page=%p,off=%#lx,size=%zx,dir=%x)\n", 346 dev_dbg(dev, "%s(page=%p,off=%#lx,size=%zx,dir=%x)\n",
356 __func__, page, offset, size, dir); 347 __func__, page, offset, size, dir);
@@ -368,9 +359,8 @@ EXPORT_SYMBOL(dma_map_page);
368 * should be) 359 * should be)
369 */ 360 */
370 361
371void 362void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
372dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size, 363 enum dma_data_direction dir)
373 enum dma_data_direction dir)
374{ 364{
375 dev_dbg(dev, "%s(ptr=%p,size=%d,dir=%x)\n", 365 dev_dbg(dev, "%s(ptr=%p,size=%d,dir=%x)\n",
376 __func__, (void *) dma_addr, size, dir); 366 __func__, (void *) dma_addr, size, dir);
@@ -379,6 +369,7 @@ dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
379 369
380 unmap_single(dev, dma_addr, size, dir); 370 unmap_single(dev, dma_addr, size, dir);
381} 371}
372EXPORT_SYMBOL(dma_unmap_single);
382 373
383int dmabounce_sync_for_cpu(struct device *dev, dma_addr_t addr, 374int dmabounce_sync_for_cpu(struct device *dev, dma_addr_t addr,
384 unsigned long off, size_t sz, enum dma_data_direction dir) 375 unsigned long off, size_t sz, enum dma_data_direction dir)
@@ -434,9 +425,8 @@ int dmabounce_sync_for_device(struct device *dev, dma_addr_t addr,
434} 425}
435EXPORT_SYMBOL(dmabounce_sync_for_device); 426EXPORT_SYMBOL(dmabounce_sync_for_device);
436 427
437static int 428static int dmabounce_init_pool(struct dmabounce_pool *pool, struct device *dev,
438dmabounce_init_pool(struct dmabounce_pool *pool, struct device *dev, const char *name, 429 const char *name, unsigned long size)
439 unsigned long size)
440{ 430{
441 pool->size = size; 431 pool->size = size;
442 DO_STATS(pool->allocs = 0); 432 DO_STATS(pool->allocs = 0);
@@ -447,9 +437,8 @@ dmabounce_init_pool(struct dmabounce_pool *pool, struct device *dev, const char
447 return pool->pool ? 0 : -ENOMEM; 437 return pool->pool ? 0 : -ENOMEM;
448} 438}
449 439
450int 440int dmabounce_register_dev(struct device *dev, unsigned long small_buffer_size,
451dmabounce_register_dev(struct device *dev, unsigned long small_buffer_size, 441 unsigned long large_buffer_size)
452 unsigned long large_buffer_size)
453{ 442{
454 struct dmabounce_device_info *device_info; 443 struct dmabounce_device_info *device_info;
455 int ret; 444 int ret;
@@ -505,9 +494,9 @@ dmabounce_register_dev(struct device *dev, unsigned long small_buffer_size,
505 kfree(device_info); 494 kfree(device_info);
506 return ret; 495 return ret;
507} 496}
497EXPORT_SYMBOL(dmabounce_register_dev);
508 498
509void 499void dmabounce_unregister_dev(struct device *dev)
510dmabounce_unregister_dev(struct device *dev)
511{ 500{
512 struct dmabounce_device_info *device_info = dev->archdata.dmabounce; 501 struct dmabounce_device_info *device_info = dev->archdata.dmabounce;
513 502
@@ -540,11 +529,6 @@ dmabounce_unregister_dev(struct device *dev)
540 529
541 dev_info(dev, "dmabounce: device unregistered\n"); 530 dev_info(dev, "dmabounce: device unregistered\n");
542} 531}
543
544
545EXPORT_SYMBOL(dma_map_single);
546EXPORT_SYMBOL(dma_unmap_single);
547EXPORT_SYMBOL(dmabounce_register_dev);
548EXPORT_SYMBOL(dmabounce_unregister_dev); 532EXPORT_SYMBOL(dmabounce_unregister_dev);
549 533
550MODULE_AUTHOR("Christopher Hoover <ch@hpl.hp.com>, Deepak Saxena <dsaxena@plexity.net>"); 534MODULE_AUTHOR("Christopher Hoover <ch@hpl.hp.com>, Deepak Saxena <dsaxena@plexity.net>");