diff options
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/omap-des.c | 68 |
1 files changed, 17 insertions, 51 deletions
diff --git a/drivers/crypto/omap-des.c b/drivers/crypto/omap-des.c index b9a465fc2300..3eedb03111ba 100644 --- a/drivers/crypto/omap-des.c +++ b/drivers/crypto/omap-des.c @@ -29,7 +29,6 @@ #include <linux/scatterlist.h> #include <linux/dma-mapping.h> #include <linux/dmaengine.h> -#include <linux/omap-dma.h> #include <linux/pm_runtime.h> #include <linux/of.h> #include <linux/of_device.h> @@ -155,9 +154,7 @@ struct omap_des_dev { struct scatter_walk in_walk; struct scatter_walk out_walk; - int dma_in; struct dma_chan *dma_lch_in; - int dma_out; struct dma_chan *dma_lch_out; int in_sg_len; int out_sg_len; @@ -337,30 +334,21 @@ static void omap_des_dma_out_callback(void *data) static int omap_des_dma_init(struct omap_des_dev *dd) { - int err = -ENOMEM; - dma_cap_mask_t mask; + int err; dd->dma_lch_out = NULL; dd->dma_lch_in = NULL; - 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_chan(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_chan(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; } @@ -368,14 +356,15 @@ 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); } @@ -980,8 +969,6 @@ static int omap_des_get_of(struct omap_des_dev *dd, return -EINVAL; } - dd->dma_out = -1; /* Dummy value that's unused */ - dd->dma_in = -1; /* Dummy value that's unused */ dd->pdata = match->data; return 0; @@ -997,33 +984,10 @@ static int omap_des_get_of(struct omap_des_dev *dd, static int omap_des_get_pdev(struct omap_des_dev *dd, struct platform_device *pdev) { - struct device *dev = &pdev->dev; - struct resource *r; - int err = 0; - - /* Get the DMA out channel */ - r = platform_get_resource(pdev, IORESOURCE_DMA, 0); - if (!r) { - dev_err(dev, "no DMA out resource info\n"); - err = -ENODEV; - goto err; - } - dd->dma_out = r->start; - - /* Get the DMA in channel */ - r = platform_get_resource(pdev, IORESOURCE_DMA, 1); - if (!r) { - dev_err(dev, "no DMA in resource info\n"); - err = -ENODEV; - goto err; - } - dd->dma_in = r->start; - /* non-DT devices get pdata from pdev */ dd->pdata = pdev->dev.platform_data; -err: - return err; + return 0; } static int omap_des_probe(struct platform_device *pdev) @@ -1083,7 +1047,9 @@ static int omap_des_probe(struct platform_device *pdev) tasklet_init(&dd->done_task, omap_des_done_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); @@ -1141,8 +1107,8 @@ 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); err_get: |