mmc: core: Log about empty non-removable slots

Failing to detect a non-removable card shouldn't happen. Let's log a
message about it to inform that we have problem that ought to be fixed.

Signed-off-by: Marc Gonzalez <marc.w.gonzalez@free.fr>
Link: https://lore.kernel.org/r/d2444591-c91b-a94d-71e2-9dedc3b6c514@free.fr
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Author: mwgonzalez

drivers/mmc/core/core.c

@@ -2257,6 +2257,11 @@ void mmc_rescan(struct work_struct *work)
 			break;
 	}
 
+	/* A non-removable card should have been detected by now. */
+	if (!mmc_card_is_removable(host) && !host->bus_ops)
+		pr_info("%s: Failed to initialize a non-removable card",
+			mmc_hostname(host));
+
 	/*
 	 * Ignore the command timeout errors observed during
 	 * the card init as those are excepted.