diff options
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/Kconfig | 2 | ||||
| -rw-r--r-- | crypto/async_tx/async_raid6_recov.c | 21 | ||||
| -rw-r--r-- | crypto/async_tx/async_tx.c | 46 |
3 files changed, 33 insertions, 36 deletions
diff --git a/crypto/Kconfig b/crypto/Kconfig index 403857ad06d4..9d9434f08c92 100644 --- a/crypto/Kconfig +++ b/crypto/Kconfig @@ -28,7 +28,7 @@ config CRYPTO_FIPS This options enables the fips boot option which is required if you want to system to operate in a FIPS 200 certification. You should say no unless you know what - this is. Note that CRYPTO_ANSI_CPRNG is requred if this + this is. Note that CRYPTO_ANSI_CPRNG is required if this option is selected config CRYPTO_ALGAPI diff --git a/crypto/async_tx/async_raid6_recov.c b/crypto/async_tx/async_raid6_recov.c index 943f2abac9b4..ce038d861eb9 100644 --- a/crypto/async_tx/async_raid6_recov.c +++ b/crypto/async_tx/async_raid6_recov.c @@ -324,6 +324,7 @@ struct dma_async_tx_descriptor * async_raid6_2data_recov(int disks, size_t bytes, int faila, int failb, struct page **blocks, struct async_submit_ctl *submit) { + void *scribble = submit->scribble; int non_zero_srcs, i; BUG_ON(faila == failb); @@ -332,11 +333,13 @@ async_raid6_2data_recov(int disks, size_t bytes, int faila, int failb, pr_debug("%s: disks: %d len: %zu\n", __func__, disks, bytes); - /* we need to preserve the contents of 'blocks' for the async - * case, so punt to synchronous if a scribble buffer is not available + /* if a dma resource is not available or a scribble buffer is not + * available punt to the synchronous path. In the 'dma not + * available' case be sure to use the scribble buffer to + * preserve the content of 'blocks' as the caller intended. */ - if (!submit->scribble) { - void **ptrs = (void **) blocks; + if (!async_dma_find_channel(DMA_PQ) || !scribble) { + void **ptrs = scribble ? scribble : (void **) blocks; async_tx_quiesce(&submit->depend_tx); for (i = 0; i < disks; i++) @@ -406,11 +409,13 @@ async_raid6_datap_recov(int disks, size_t bytes, int faila, pr_debug("%s: disks: %d len: %zu\n", __func__, disks, bytes); - /* we need to preserve the contents of 'blocks' for the async - * case, so punt to synchronous if a scribble buffer is not available + /* if a dma resource is not available or a scribble buffer is not + * available punt to the synchronous path. In the 'dma not + * available' case be sure to use the scribble buffer to + * preserve the content of 'blocks' as the caller intended. */ - if (!scribble) { - void **ptrs = (void **) blocks; + if (!async_dma_find_channel(DMA_PQ) || !scribble) { + void **ptrs = scribble ? scribble : (void **) blocks; async_tx_quiesce(&submit->depend_tx); for (i = 0; i < disks; i++) diff --git a/crypto/async_tx/async_tx.c b/crypto/async_tx/async_tx.c index f9cdf04fe7c0..7f2c00a45205 100644 --- a/crypto/async_tx/async_tx.c +++ b/crypto/async_tx/async_tx.c @@ -81,18 +81,13 @@ async_tx_channel_switch(struct dma_async_tx_descriptor *depend_tx, struct dma_device *device = chan->device; struct dma_async_tx_descriptor *intr_tx = (void *) ~0; - #ifdef CONFIG_ASYNC_TX_DISABLE_CHANNEL_SWITCH - BUG(); - #endif - /* first check to see if we can still append to depend_tx */ - spin_lock_bh(&depend_tx->lock); - if (depend_tx->parent && depend_tx->chan == tx->chan) { - tx->parent = depend_tx; - depend_tx->next = tx; + txd_lock(depend_tx); + if (txd_parent(depend_tx) && depend_tx->chan == tx->chan) { + txd_chain(depend_tx, tx); intr_tx = NULL; } - spin_unlock_bh(&depend_tx->lock); + txd_unlock(depend_tx); /* attached dependency, flush the parent channel */ if (!intr_tx) { @@ -111,24 +106,22 @@ async_tx_channel_switch(struct dma_async_tx_descriptor *depend_tx, if (intr_tx) { intr_tx->callback = NULL; intr_tx->callback_param = NULL; - tx->parent = intr_tx; - /* safe to set ->next outside the lock since we know we are + /* safe to chain outside the lock since we know we are * not submitted yet */ - intr_tx->next = tx; + txd_chain(intr_tx, tx); /* check if we need to append */ - spin_lock_bh(&depend_tx->lock); - if (depend_tx->parent) { - intr_tx->parent = depend_tx; - depend_tx->next = intr_tx; + txd_lock(depend_tx); + if (txd_parent(depend_tx)) { + txd_chain(depend_tx, intr_tx); async_tx_ack(intr_tx); intr_tx = NULL; } - spin_unlock_bh(&depend_tx->lock); + txd_unlock(depend_tx); if (intr_tx) { - intr_tx->parent = NULL; + txd_clear_parent(intr_tx); intr_tx->tx_submit(intr_tx); async_tx_ack(intr_tx); } @@ -176,21 +169,20 @@ async_tx_submit(struct dma_chan *chan, struct dma_async_tx_descriptor *tx, * 2/ dependencies are 1:1 i.e. two transactions can * not depend on the same parent */ - BUG_ON(async_tx_test_ack(depend_tx) || depend_tx->next || - tx->parent); + BUG_ON(async_tx_test_ack(depend_tx) || txd_next(depend_tx) || + txd_parent(tx)); /* the lock prevents async_tx_run_dependencies from missing * the setting of ->next when ->parent != NULL */ - spin_lock_bh(&depend_tx->lock); - if (depend_tx->parent) { + txd_lock(depend_tx); + if (txd_parent(depend_tx)) { /* we have a parent so we can not submit directly * if we are staying on the same channel: append * else: channel switch */ if (depend_tx->chan == chan) { - tx->parent = depend_tx; - depend_tx->next = tx; + txd_chain(depend_tx, tx); s = ASYNC_TX_SUBMITTED; } else s = ASYNC_TX_CHANNEL_SWITCH; @@ -203,7 +195,7 @@ async_tx_submit(struct dma_chan *chan, struct dma_async_tx_descriptor *tx, else s = ASYNC_TX_CHANNEL_SWITCH; } - spin_unlock_bh(&depend_tx->lock); + txd_unlock(depend_tx); switch (s) { case ASYNC_TX_SUBMITTED: @@ -212,12 +204,12 @@ async_tx_submit(struct dma_chan *chan, struct dma_async_tx_descriptor *tx, async_tx_channel_switch(depend_tx, tx); break; case ASYNC_TX_DIRECT_SUBMIT: - tx->parent = NULL; + txd_clear_parent(tx); tx->tx_submit(tx); break; } } else { - tx->parent = NULL; + txd_clear_parent(tx); tx->tx_submit(tx); } |
