mmc: host: omap_hsmmc: add a verbose print to enable CONFIG_REGULATOR_PBIAS

Since v4.3+, CONFIG_REGULATOR_PBIAS should be enabled (for platforms that
have PBIAS regulator) in order for MMC1 to work.

Add a more verbose print to help enable CONFIG_REGULATOR_PBIAS for users
using a olddefconfig or a custom .config.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Acked-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index f6e4d97180359c32066ffa36d1ae99fd0f612d3d..f636ef242e8483d79623b6dc7f7b348c0270611d 100644 (file)
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -503,8 +503,11 @@ static int omap_hsmmc_reg_get(struct omap_hsmmc_host *host)
        host->pbias = devm_regulator_get_optional(host->dev, "pbias");
        if (IS_ERR(host->pbias)) {
                ret = PTR_ERR(host->pbias);
-               if ((ret != -ENODEV) && host->dev->of_node)
+               if ((ret != -ENODEV) && host->dev->of_node) {
+                       dev_err(host->dev,
+                       "SD card detect fail? enable CONFIG_REGULATOR_PBIAS\n");
                        return ret;
+               }
                dev_dbg(host->dev, "unable to get pbias regulator %ld\n",
                        PTR_ERR(host->pbias));
                host->pbias = NULL;