diff mbox

[v6,3/9] mmc: dw_mmc: allow probe to succeed even if one slot is initialized

Message ID 1347905803-22742-4-git-send-email-thomas.abraham@linaro.org
State Accepted
Commit 1c2215b7c6f20a65877431a5ebb4f9a789df3811
Headers show

Commit Message

thomas.abraham@linaro.org Sept. 17, 2012, 6:16 p.m. UTC 
Instead of aborting the probe in case a slot initialization fails, allow
initialization of as many slots as possible. If there are atleast one
instance of slot that is successfully initialized, allow the driver probe
to succeed.

Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Will Newton <will.newton@imgtec.com>
---
 drivers/mmc/host/dw_mmc.c |   23 +++++++++++++----------
 1 files changed, 13 insertions(+), 10 deletions(-)
diff mbox

Patch

diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index a18e73c..227c42e 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -1946,6 +1946,7 @@  int dw_mci_probe(struct dw_mci *host)
 {
 	int width, i, ret = 0;
 	u32 fifo_size;
+	int init_slots = 0;
 
 	if (!host->pdata || !host->pdata->init) {
 		dev_err(host->dev,
@@ -2054,10 +2055,18 @@  int dw_mci_probe(struct dw_mci *host)
 	/* We need at least one slot to succeed */
 	for (i = 0; i < host->num_slots; i++) {
 		ret = dw_mci_init_slot(host, i);
-		if (ret) {
-			ret = -ENODEV;
-			goto err_init_slot;
-		}
+		if (ret)
+			dev_dbg(host->dev, "slot %d init failed\n", i);
+		else
+			init_slots++;
+	}
+
+	if (init_slots) {
+		dev_info(host->dev, "%d slots initialized\n", init_slots);
+	} else {
+		dev_dbg(host->dev, "attempted to initialize %d slots, "
+					"but failed on all\n", host->num_slots);
+		goto err_init_slot;
 	}
 
 	/*
@@ -2092,12 +2101,6 @@  int dw_mci_probe(struct dw_mci *host)
 	return 0;
 
 err_init_slot:
-	/* De-init any initialized slots */
-	while (i > 0) {
-		if (host->slot[i])
-			dw_mci_cleanup_slot(host->slot[i], i);
-		i--;
-	}
 	free_irq(host->irq, host);
 
 err_workqueue: