[PATCH 2/2] mmc: tmio: allow tmio_mmc_host_alloc() to return proper error code

[Masahiro Yamada]

Now, mmc_alloc_host() returns an error pointer when it fails.
So, tmio_mmc_host_alloc() can also return an error pointer to
propagate the proper error code.

Signed-off-by: Masahiro Yamada <yamada.masah...@socionext.com>
---

 drivers/mmc/host/sh_mobile_sdhi.c | 4 ++--
 drivers/mmc/host/tmio_mmc.c       | 4 +++-
 drivers/mmc/host/tmio_mmc_pio.c   | 2 +-
 3 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/mmc/host/sh_mobile_sdhi.c 
b/drivers/mmc/host/sh_mobile_sdhi.c
index 49edff7..97a796c 100644
--- a/drivers/mmc/host/sh_mobile_sdhi.c
+++ b/drivers/mmc/host/sh_mobile_sdhi.c
@@ -355,8 +355,8 @@ static int sh_mobile_sdhi_probe(struct platform_device 
*pdev)
        }
 
        host = tmio_mmc_host_alloc(pdev);
-       if (!host) {
-               ret = -ENOMEM;
+       if (IS_ERR(host)) {
+               ret = PTR_ERR(host);
                goto eprobe;
        }
 
diff --git a/drivers/mmc/host/tmio_mmc.c b/drivers/mmc/host/tmio_mmc.c
index e897e7f..3316545 100644
--- a/drivers/mmc/host/tmio_mmc.c
+++ b/drivers/mmc/host/tmio_mmc.c
@@ -93,8 +93,10 @@ static int tmio_mmc_probe(struct platform_device *pdev)
        pdata->flags |= TMIO_MMC_HAVE_HIGH_REG;
 
        host = tmio_mmc_host_alloc(pdev);
-       if (!host)
+       if (IS_ERR(host)) {
+               ret = PTR_ERR(host);
                goto cell_disable;
+       }
 
        /* SD control register space size is 0x200, 0x400 for bus_shift=1 */
        host->bus_shift = resource_size(res) >> 10;
diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c
index 18106fc..7e8c80e 100644
--- a/drivers/mmc/host/tmio_mmc_pio.c
+++ b/drivers/mmc/host/tmio_mmc_pio.c
@@ -1014,7 +1014,7 @@ struct tmio_mmc_host*
 
        mmc = mmc_alloc_host(sizeof(struct tmio_mmc_host), &pdev->dev);
        if (IS_ERR(mmc))
-               return NULL;
+               return ERR_CAST(mmc);
 
        host = mmc_priv(mmc);
        host->mmc = mmc;
-- 
1.9.1