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Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx

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* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx:
  dmaengine: provide dummy functions for DMA_ENGINE=n
  mv_xor: fix race in tasklet function
This commit is contained in:
Linus Torvalds 2011-01-03 11:48:54 -08:00
commit d45fa563a6
2 changed files with 11 additions and 4 deletions
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2
drivers/dma/mv_xor.c
View File

@ -449,7 +449,7 @@ mv_xor_slot_cleanup(struct mv_xor_chan *mv_chan)
static void mv_xor_tasklet(unsigned long data) static void mv_xor_tasklet(unsigned long data)
{ {
struct mv_xor_chan *chan = (struct mv_xor_chan *) data; struct mv_xor_chan *chan = (struct mv_xor_chan *) data;
__mv_xor_slot_cleanup(chan); mv_xor_slot_cleanup(chan);
} }
static struct mv_xor_desc_slot * static struct mv_xor_desc_slot *

13
include/linux/dmaengine.h
View File

@ -824,6 +824,8 @@ enum dma_status dma_sync_wait(struct dma_chan *chan, dma_cookie_t cookie);
#ifdef CONFIG_DMA_ENGINE #ifdef CONFIG_DMA_ENGINE
enum dma_status dma_wait_for_async_tx(struct dma_async_tx_descriptor *tx); enum dma_status dma_wait_for_async_tx(struct dma_async_tx_descriptor *tx);
void dma_issue_pending_all(void); void dma_issue_pending_all(void);
struct dma_chan *__dma_request_channel(dma_cap_mask_t *mask, dma_filter_fn fn, void *fn_param);
void dma_release_channel(struct dma_chan *chan);
#else #else
static inline enum dma_status dma_wait_for_async_tx(struct dma_async_tx_descriptor *tx) static inline enum dma_status dma_wait_for_async_tx(struct dma_async_tx_descriptor *tx)
{ {
@ -831,7 +833,14 @@ static inline enum dma_status dma_wait_for_async_tx(struct dma_async_tx_descript
} }
static inline void dma_issue_pending_all(void) static inline void dma_issue_pending_all(void)
{ {
do { } while (0); }
static inline struct dma_chan *__dma_request_channel(dma_cap_mask_t *mask,
dma_filter_fn fn, void *fn_param)
{
return NULL;
}
static inline void dma_release_channel(struct dma_chan *chan)
{
} }
#endif #endif
@ -842,8 +851,6 @@ void dma_async_device_unregister(struct dma_device *device);
void dma_run_dependencies(struct dma_async_tx_descriptor *tx); void dma_run_dependencies(struct dma_async_tx_descriptor *tx);
struct dma_chan *dma_find_channel(enum dma_transaction_type tx_type); struct dma_chan *dma_find_channel(enum dma_transaction_type tx_type);
#define dma_request_channel(mask, x, y) __dma_request_channel(&(mask), x, y) #define dma_request_channel(mask, x, y) __dma_request_channel(&(mask), x, y)
struct dma_chan *__dma_request_channel(dma_cap_mask_t *mask, dma_filter_fn fn, void *fn_param);
void dma_release_channel(struct dma_chan *chan);
/* --- Helper iov-locking functions --- */ /* --- Helper iov-locking functions --- */