Convert all uses of devm_request_and_ioremap() to the newly introduced
devm_ioremap_resource() which provides more consistent error handling.

devm_ioremap_resource() provides its own error messages so all explicit
error messages can be removed from the failure code paths.

Signed-off-by: Thierry Reding <thierry.red...@avionic-design.de>
Cc: Chris Ball <c...@laptop.org>
Cc: Ben Dooks <ben-li...@fluff.org>
Cc: linux-mmc@vger.kernel.org
---
 drivers/mmc/host/dw_mmc-pltfm.c | 7 ++++---
 drivers/mmc/host/mxs-mmc.c      | 6 +++---
 drivers/mmc/host/sdhci-s3c.c    | 7 +++----
 3 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/mmc/host/dw_mmc-pltfm.c b/drivers/mmc/host/dw_mmc-pltfm.c
index 5e1fb1d..41c27b7 100644
--- a/drivers/mmc/host/dw_mmc-pltfm.c
+++ b/drivers/mmc/host/dw_mmc-pltfm.c
@@ -10,6 +10,7 @@
  * (at your option) any later version.
  */
 
+#include <linux/err.h>
 #include <linux/interrupt.h>
 #include <linux/module.h>
 #include <linux/io.h>
@@ -46,9 +47,9 @@ int dw_mci_pltfm_register(struct platform_device *pdev,
        host->dev = &pdev->dev;
        host->irq_flags = 0;
        host->pdata = pdev->dev.platform_data;
-       host->regs = devm_request_and_ioremap(&pdev->dev, regs);
-       if (!host->regs)
-               return -ENOMEM;
+       host->regs = devm_ioremap_resource(&pdev->dev, regs);
+       if (IS_ERR(host->regs))
+               return PTR_ERR(host->regs);
 
        if (drv_data && drv_data->init) {
                ret = drv_data->init(host);
diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c
index 206fe49..5b66555 100644
--- a/drivers/mmc/host/mxs-mmc.c
+++ b/drivers/mmc/host/mxs-mmc.c
@@ -614,9 +614,9 @@ static int mxs_mmc_probe(struct platform_device *pdev)
        host = mmc_priv(mmc);
        ssp = &host->ssp;
        ssp->dev = &pdev->dev;
-       ssp->base = devm_request_and_ioremap(&pdev->dev, iores);
-       if (!ssp->base) {
-               ret = -EADDRNOTAVAIL;
+       ssp->base = devm_ioremap_resource(&pdev->dev, iores);
+       if (IS_ERR(ssp->base)) {
+               ret = PTR_ERR(ssp->base);
                goto out_mmc_free;
        }
 
diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
index 82a8de1..a0c6214 100644
--- a/drivers/mmc/host/sdhci-s3c.c
+++ b/drivers/mmc/host/sdhci-s3c.c
@@ -651,10 +651,9 @@ static int sdhci_s3c_probe(struct platform_device *pdev)
 #endif
 
        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-       host->ioaddr = devm_request_and_ioremap(&pdev->dev, res);
-       if (!host->ioaddr) {
-               dev_err(dev, "failed to map registers\n");
-               ret = -ENXIO;
+       host->ioaddr = devm_ioremap_resource(&pdev->dev, res);
+       if (IS_ERR(host->ioaddr)) {
+               ret = PTR_ERR(host->ioaddr);
                goto err_req_regs;
        }
 
-- 
1.8.1.1

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