Switch to use ma_request_slave_channel_compat_reason() to request the DMA channels. Only fall back to pio mode if the error code returned is not -EPROBE_DEFER, otherwise return from the probe with the -EPROBE_DEFER.
Signed-off-by: Peter Ujfalusi peter.ujfalusi@ti.com CC: Herbert Xu herbert@gondor.apana.org.au CC: David S. Miller davem@davemloft.net CC: Lokesh Vutla lokeshvutla@ti.com --- drivers/crypto/omap-des.c | 38 ++++++++++++++++++++------------------ 1 file changed, 20 insertions(+), 18 deletions(-)
diff --git a/drivers/crypto/omap-des.c b/drivers/crypto/omap-des.c index 46307098f8ba..06be02f520da 100644 --- a/drivers/crypto/omap-des.c +++ b/drivers/crypto/omap-des.c @@ -340,7 +340,7 @@ static void omap_des_dma_out_callback(void *data)
static int omap_des_dma_init(struct omap_des_dev *dd) { - int err = -ENOMEM; + int err; dma_cap_mask_t mask;
dd->dma_lch_out = NULL; @@ -349,21 +349,20 @@ static int omap_des_dma_init(struct omap_des_dev *dd) dma_cap_zero(mask); dma_cap_set(DMA_SLAVE, mask);
- dd->dma_lch_in = dma_request_slave_channel_compat(mask, - omap_dma_filter_fn, - &dd->dma_in, - dd->dev, "rx"); - if (!dd->dma_lch_in) { + dd->dma_lch_in = dma_request_slave_channel_compat_reason(mask, + omap_dma_filter_fn, &dd->dma_in, + dd->dev, "rx"); + if (IS_ERR(dd->dma_lch_in)) { dev_err(dd->dev, "Unable to request in DMA channel\n"); - goto err_dma_in; + return PTR_ERR(dd->dma_lch_in); }
- dd->dma_lch_out = dma_request_slave_channel_compat(mask, - omap_dma_filter_fn, - &dd->dma_out, - dd->dev, "tx"); - if (!dd->dma_lch_out) { + dd->dma_lch_out = dma_request_slave_channel_compat_reason(mask, + omap_dma_filter_fn, &dd->dma_out, + dd->dev, "tx"); + if (IS_ERR(dd->dma_lch_out)) { dev_err(dd->dev, "Unable to request out DMA channel\n"); + err = PTR_ERR(dd->dma_lch_out); goto err_dma_out; }
@@ -371,14 +370,15 @@ static int omap_des_dma_init(struct omap_des_dev *dd)
err_dma_out: dma_release_channel(dd->dma_lch_in); -err_dma_in: - if (err) - pr_err("error: %d\n", err); + return err; }
static void omap_des_dma_cleanup(struct omap_des_dev *dd) { + if (dd->pio_only) + return; + dma_release_channel(dd->dma_lch_out); dma_release_channel(dd->dma_lch_in); } @@ -1110,7 +1110,9 @@ static int omap_des_probe(struct platform_device *pdev) tasklet_init(&dd->queue_task, omap_des_queue_task, (unsigned long)dd);
err = omap_des_dma_init(dd); - if (err && DES_REG_IRQ_STATUS(dd) && DES_REG_IRQ_ENABLE(dd)) { + if (err == -EPROBE_DEFER) { + goto err_irq; + } else if (err && DES_REG_IRQ_STATUS(dd) && DES_REG_IRQ_ENABLE(dd)) { dd->pio_only = 1;
irq = platform_get_irq(pdev, 0); @@ -1154,8 +1156,8 @@ err_algs: for (j = dd->pdata->algs_info[i].registered - 1; j >= 0; j--) crypto_unregister_alg( &dd->pdata->algs_info[i].algs_list[j]); - if (!dd->pio_only) - omap_des_dma_cleanup(dd); + + omap_des_dma_cleanup(dd); err_irq: tasklet_kill(&dd->done_task); tasklet_kill(&dd->queue_task);