1 files changed, 24 insertions, 9 deletions

diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c
index 35508584ac2..41cc63360e4 100644
--- a/drivers/mmc/host/mmc_spi.c
+++ b/drivers/mmc/host/mmc_spi.c
@@ -1126,16 +1126,28 @@ static int mmc_spi_get_ro(struct mmc_host *mmc)
         struct mmc_spi_host *host = mmc_priv(mmc);
 
         if (host->pdata && host->pdata->get_ro)
-                return host->pdata->get_ro(mmc->parent);
-        /* board doesn't support read only detection; assume writeable */
-        return 0;
+                return !!host->pdata->get_ro(mmc->parent);
+        /*
+         * Board doesn't support read only detection; let the mmc core
+         * decide what to do.
+         */
+        return -ENOSYS;
 }
 
+static int mmc_spi_get_cd(struct mmc_host *mmc)
+{
+        struct mmc_spi_host *host = mmc_priv(mmc);
+
+        if (host->pdata && host->pdata->get_cd)
+                return !!host->pdata->get_cd(mmc->parent);
+        return -ENOSYS;
+}
 
 static const struct mmc_host_ops mmc_spi_ops = {
         .request        = mmc_spi_request,
         .set_ios        = mmc_spi_set_ios,
         .get_ro         = mmc_spi_get_ro,
+        .get_cd         = mmc_spi_get_cd,
 };
 
 
@@ -1240,10 +1252,7 @@ static int mmc_spi_probe(struct spi_device *spi)
         mmc->ops = &mmc_spi_ops;
         mmc->max_blk_size = MMC_SPI_BLOCKSIZE;
 
-        /* As long as we keep track of the number of successfully
-         * transmitted blocks, we're good for multiwrite.
-         */
-        mmc->caps = MMC_CAP_SPI | MMC_CAP_MULTIWRITE;
+        mmc->caps = MMC_CAP_SPI;
 
         /* SPI doesn't need the lowspeed device identification thing for
          * MMC or SD cards, since it never comes up in open drain mode.
@@ -1319,17 +1328,23 @@ static int mmc_spi_probe(struct spi_device *spi)
                         goto fail_glue_init;
         }
 
+        /* pass platform capabilities, if any */
+        if (host->pdata)
+                mmc->caps |= host->pdata->caps;
+
         status = mmc_add_host(mmc);
         if (status != 0)
                 goto fail_add_host;
 
-        dev_info(&spi->dev, "SD/MMC host %s%s%s%s\n",
+        dev_info(&spi->dev, "SD/MMC host %s%s%s%s%s\n",
                         mmc->class_dev.bus_id,
                         host->dma_dev ? "" : ", no DMA",
                         (host->pdata && host->pdata->get_ro)
                                 ? "" : ", no WP",
                         (host->pdata && host->pdata->setpower)
-                                ? "" : ", no poweroff");
+                                ? "" : ", no poweroff",
+                        (mmc->caps & MMC_CAP_NEEDS_POLL)
+                                ? ", cd polling" : "");
         return 0;
 
 fail_add_host: