diff options
| -rw-r--r-- | drivers/crypto/omap-sham.c | 40 |
1 files changed, 27 insertions, 13 deletions
diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c index 24de4ace9783..a8de7b890d45 100644 --- a/drivers/crypto/omap-sham.c +++ b/drivers/crypto/omap-sham.c @@ -79,6 +79,7 @@ #define FLAGS_OUTPUT_READY 3 #define FLAGS_INIT 4 #define FLAGS_CPU 5 +#define FLAGS_DMA_READY 6 /* context flags */ #define FLAGS_FINUP 16 #define FLAGS_SG 17 @@ -304,6 +305,8 @@ static int omap_sham_xmit_cpu(struct omap_sham_dev *dd, const u8 *buf, if (final) set_bit(FLAGS_FINAL, &dd->flags); /* catch last interrupt */ + set_bit(FLAGS_CPU, &dd->flags); + len32 = DIV_ROUND_UP(length, sizeof(u32)); for (count = 0; count < len32; count++) @@ -1033,29 +1036,39 @@ static struct ahash_alg algs[] = { static void omap_sham_done_task(unsigned long data) { struct omap_sham_dev *dd = (struct omap_sham_dev *)data; - int ready = 0, err = 0; + int err = 0; if (!test_bit(FLAGS_BUSY, &dd->flags)) { omap_sham_handle_queue(dd, NULL); return; } - if (test_and_clear_bit(FLAGS_OUTPUT_READY, &dd->flags)) - ready = 1; - - if (test_and_clear_bit(FLAGS_DMA_ACTIVE, &dd->flags)) { - omap_sham_update_dma_stop(dd); - if (!dd->err) + if (test_bit(FLAGS_CPU, &dd->flags)) { + if (test_and_clear_bit(FLAGS_OUTPUT_READY, &dd->flags)) + goto finish; + } else if (test_bit(FLAGS_DMA_READY, &dd->flags)) { + if (test_and_clear_bit(FLAGS_DMA_ACTIVE, &dd->flags)) { + omap_sham_update_dma_stop(dd); + if (dd->err) { + err = dd->err; + goto finish; + } + } + if (test_and_clear_bit(FLAGS_OUTPUT_READY, &dd->flags)) { + /* hash or semi-hash ready */ + clear_bit(FLAGS_DMA_READY, &dd->flags); err = omap_sham_update_dma_start(dd); + if (err != -EINPROGRESS) + goto finish; + } } - err = dd->err ? : err; + return; - if (err != -EINPROGRESS && (ready || err)) { - dev_dbg(dd->dev, "update done: err: %d\n", err); - /* finish curent request */ - omap_sham_finish_req(dd->req, err); - } +finish: + dev_dbg(dd->dev, "update done: err: %d\n", err); + /* finish curent request */ + omap_sham_finish_req(dd->req, err); } static irqreturn_t omap_sham_irq(int irq, void *dev_id) @@ -1087,6 +1100,7 @@ static void omap_sham_dma_callback(int lch, u16 ch_status, void *data) clear_bit(FLAGS_INIT, &dd->flags);/* request to re-initialize */ } + set_bit(FLAGS_DMA_READY, &dd->flags); tasklet_schedule(&dd->done_task); } |