dma: mv_xor: use mv_xor_chan pointers as arguments to self-test functions

In preparation for the removal of the mv_xor_device structure, we
directly pass mv_xor_chan pointers to the self-test functions included
in the driver. These functions were anyway selecting the first (and
only channel) available in each DMA device, so the behaviour is
unchanged.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c
index a64e30e27a19c194e13224ba1d2595a4128e6fc9..75a80510dba946552da2b7ae77a1dc3527fc14be 100644 (file)
--- a/drivers/dma/mv_xor.c
+++ b/drivers/dma/mv_xor.c
@@ -898,7 +898,7 @@ static void mv_xor_issue_pending(struct dma_chan *chan)
  */
 #define MV_XOR_TEST_SIZE 2000
 
-static int __devinit mv_xor_memcpy_self_test(struct mv_xor_device *device)
+static int __devinit mv_xor_memcpy_self_test(struct mv_xor_chan *mv_chan)
 {
        int i;
        void *src, *dest;
@@ -922,10 +922,7 @@ static int __devinit mv_xor_memcpy_self_test(struct mv_xor_device *device)
        for (i = 0; i < MV_XOR_TEST_SIZE; i++)
                ((u8 *) src)[i] = (u8)i;
 
-       /* Start copy, using first DMA channel */
-       dma_chan = container_of(device->dmadev.channels.next,
-                               struct dma_chan,
-                               device_node);
+       dma_chan = &mv_chan->dmachan;
        if (mv_xor_alloc_chan_resources(dma_chan) < 1) {
                err = -ENODEV;
                goto out;
@@ -971,7 +968,7 @@ static int __devinit mv_xor_memcpy_self_test(struct mv_xor_device *device)
 
 #define MV_XOR_NUM_SRC_TEST 4 /* must be <= 15 */
 static int __devinit
-mv_xor_xor_self_test(struct mv_xor_device *device)
+mv_xor_xor_self_test(struct mv_xor_chan *mv_chan)
 {
        int i, src_idx;
        struct page *dest;
@@ -1016,9 +1013,7 @@ mv_xor_xor_self_test(struct mv_xor_device *device)
 
        memset(page_address(dest), 0, PAGE_SIZE);
 
-       dma_chan = container_of(device->dmadev.channels.next,
-                               struct dma_chan,
-                               device_node);
+       dma_chan = &mv_chan->dmachan;
        if (mv_xor_alloc_chan_resources(dma_chan) < 1) {
                err = -ENODEV;
                goto out;
@@ -1183,14 +1178,14 @@ mv_xor_channel_add(struct mv_xor_private *msp,
        list_add_tail(&mv_chan->dmachan.device_node, &dma_dev->channels);
 
        if (dma_has_cap(DMA_MEMCPY, dma_dev->cap_mask)) {
-               ret = mv_xor_memcpy_self_test(adev);
+               ret = mv_xor_memcpy_self_test(mv_chan);
                dev_dbg(&pdev->dev, "memcpy self test returned %d\n", ret);
                if (ret)
                        goto err_free_dma;
        }
 
        if (dma_has_cap(DMA_XOR, dma_dev->cap_mask)) {
-               ret = mv_xor_xor_self_test(adev);
+               ret = mv_xor_xor_self_test(mv_chan);
                dev_dbg(&pdev->dev, "xor self test returned %d\n", ret);
                if (ret)
                        goto err_free_dma;