mmc: msm: fix dma usage not to use internal APIs

Remove parts of this driver which use internal API calls. This
replaces the calls as suggested by Russell King.

Cc: Russell King - ARM Linux <linux@arm.linux.org.uk>
Signed-off-by: Daniel Walker <dwalker@codeaurora.org>

diff --git a/drivers/mmc/host/msm_sdcc.c b/drivers/mmc/host/msm_sdcc.c
index 5decfd0..733d233 100644 (file)
--- a/drivers/mmc/host/msm_sdcc.c
+++ b/drivers/mmc/host/msm_sdcc.c
@@ -383,14 +383,30 @@ static int msmsdcc_config_dma(struct msmsdcc_host *host, struct mmc_data *data)
        host->curr.user_pages = 0;
 
        box = &nc->cmd[0];
-       for (i = 0; i < host->dma.num_ents; i++) {
-               box->cmd = CMD_MODE_BOX;
 
-       /* Initialize sg dma address */
-       sg->dma_address = page_to_dma(mmc_dev(host->mmc), sg_page(sg))
-                               + sg->offset;
+       /* location of command block must be 64 bit aligned */
+       BUG_ON(host->dma.cmd_busaddr & 0x07);
+
+       nc->cmdptr = (host->dma.cmd_busaddr >> 3) | CMD_PTR_LP;
+       host->dma.hdr.cmdptr = DMOV_CMD_PTR_LIST |
+                              DMOV_CMD_ADDR(host->dma.cmdptr_busaddr);
+       host->dma.hdr.complete_func = msmsdcc_dma_complete_func;
+
+       n = dma_map_sg(mmc_dev(host->mmc), host->dma.sg,
+                       host->dma.num_ents, host->dma.dir);
+       if (n == 0) {
+               printk(KERN_ERR "%s: Unable to map in all sg elements\n",
+                       mmc_hostname(host->mmc));
+               host->dma.sg = NULL;
+               host->dma.num_ents = 0;
+               return -ENOMEM;
+       }
+
+       for_each_sg(host->dma.sg, sg, n, i) {
+
+               box->cmd = CMD_MODE_BOX;
 
-       if (i == (host->dma.num_ents - 1))
+               if (i == n - 1)
                        box->cmd |= CMD_LC;
                rows = (sg_dma_len(sg) % MCI_FIFOSIZE) ?
                        (sg_dma_len(sg) / MCI_FIFOSIZE) + 1 :
@@ -418,27 +434,6 @@ static int msmsdcc_config_dma(struct msmsdcc_host *host, struct mmc_data *data)
                        box->cmd |= CMD_DST_CRCI(crci);
                }
                box++;
-               sg++;
-       }
-
-       /* location of command block must be 64 bit aligned */
-       BUG_ON(host->dma.cmd_busaddr & 0x07);
-
-       nc->cmdptr = (host->dma.cmd_busaddr >> 3) | CMD_PTR_LP;
-       host->dma.hdr.cmdptr = DMOV_CMD_PTR_LIST |
-                              DMOV_CMD_ADDR(host->dma.cmdptr_busaddr);
-       host->dma.hdr.complete_func = msmsdcc_dma_complete_func;
-
-       n = dma_map_sg(mmc_dev(host->mmc), host->dma.sg,
-                       host->dma.num_ents, host->dma.dir);
-/* dsb inside dma_map_sg will write nc out to mem as well */
-
-       if (n != host->dma.num_ents) {
-               printk(KERN_ERR "%s: Unable to map in all sg elements\n",
-                       mmc_hostname(host->mmc));
-               host->dma.sg = NULL;
-               host->dma.num_ents = 0;
-               return -ENOMEM;
        }
 
        return 0;