ARM: mmci: no need to call flush_dcache_page() with sg_miter API

The sg_miter API provides the required cache maintainence, so we don't
need to do that ourselves.  Remove the unnecessary additional cache
maintainence.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 0 insertions, 19 deletions

diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index d7b83a8b353..2563792c01d 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -311,22 +311,6 @@ mmci_data_irq(struct mmci_host *host, struct mmc_data *data,
                         data->error = -EIO;
                 }
                 host->data_xfered = round_down(success, data->blksz);
-
-                /*
-                 * We hit an error condition.  Ensure that any data
-                 * partially written to a page is properly coherent.
-                 */
-                if (data->flags & MMC_DATA_READ) {
-                        struct sg_mapping_iter *sg_miter = &host->sg_miter;
-                        unsigned long flags;
-
-                        local_irq_save(flags);
-                        if (sg_miter_next(sg_miter)) {
-                                flush_dcache_page(sg_miter->page);
-                                sg_miter_stop(sg_miter);
-                        }
-                        local_irq_restore(flags);
-                }
         }
 
         if (status & MCI_DATABLOCKEND)
@@ -510,9 +494,6 @@ static irqreturn_t mmci_pio_irq(int irq, void *dev_id)
                 if (remain)
                         break;
 
-                if (status & MCI_RXACTIVE)
-                        flush_dcache_page(sg_miter->page);
-
                 status = readl(base + MMCISTATUS);
         } while (1);