mmc: tifm: replace kmap with page_address

Since we actively avoid highmem, calling kmap_atomic() instead
of page_address() is effectively only obfuscation.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>

1 files changed, 4 insertions, 11 deletions

diff --git a/drivers/mmc/tifm_sd.c b/drivers/mmc/tifm_sd.c
index 7e607b75f4bc..e65f8a0a9349 100644
--- a/drivers/mmc/tifm_sd.c
+++ b/drivers/mmc/tifm_sd.c
@@ -107,14 +107,9 @@ struct tifm_sd {
 
 };
 
-static char* tifm_sd_kmap_atomic(struct mmc_data *data)
+static char* tifm_sd_data_buffer(struct mmc_data *data)
 {
-        return kmap_atomic(data->sg->page, KM_BIO_SRC_IRQ) + data->sg->offset;
-}
-
-static void tifm_sd_kunmap_atomic(char *buffer, struct mmc_data *data)
-{
-        kunmap_atomic(buffer - data->sg->offset, KM_BIO_SRC_IRQ);
+        return page_address(data->sg->page) + data->sg->offset;
 }
 
 static int tifm_sd_transfer_data(struct tifm_dev *sock, struct tifm_sd *host,
@@ -127,18 +122,17 @@ static int tifm_sd_transfer_data(struct tifm_dev *sock, struct tifm_sd *host,
         if (host_status & TIFM_MMCSD_BRS) {
                 /* in non-dma rx mode BRS fires when fifo is still not empty */
                 if (no_dma && (cmd->data->flags & MMC_DATA_READ)) {
-                        buffer = tifm_sd_kmap_atomic(host->req->data);
+                        buffer = tifm_sd_data_buffer(host->req->data);
                         while (host->buffer_size > host->buffer_pos) {
                                 t_val = readl(sock->addr + SOCK_MMCSD_DATA);
                                 buffer[host->buffer_pos++] = t_val & 0xff;
                                 buffer[host->buffer_pos++] =
                                                         (t_val >> 8) & 0xff;
                         }
-                        tifm_sd_kunmap_atomic(buffer, host->req->data);
                 }
                 return 1;
         } else if (no_dma) {
-                buffer = tifm_sd_kmap_atomic(host->req->data);
+                buffer = tifm_sd_data_buffer(host->req->data);
                 if ((cmd->data->flags & MMC_DATA_READ) &&
                                 (host_status & TIFM_MMCSD_AF)) {
                         for (cnt = 0; cnt < TIFM_MMCSD_FIFO_SIZE; cnt++) {
@@ -163,7 +157,6 @@ static int tifm_sd_transfer_data(struct tifm_dev *sock, struct tifm_sd *host,
                                 }
                         }
                 }
-                tifm_sd_kunmap_atomic(buffer, host->req->data);
         }
         return 0;
 }