[PATCH 3/5] mci: Allow to specify device name

[Sascha Hauer <s.hauer@pengutronix.de>]

When multiple MMC/SD cards are present in the system we often
have to have persistent names to identify them during runtime.
This patch allows to overwrite the devicename which is used.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/mci/mci-core.c |   10 +++++++---
 include/mci.h          |    1 +
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/mci/mci-core.c b/drivers/mci/mci-core.c
index 942d126..6e556a8 100644
--- a/drivers/mci/mci-core.c
+++ b/drivers/mci/mci-core.c
@@ -1397,9 +1397,13 @@ static int mci_card_probe(struct mci *mci)
 	mci->blk.dev = mci->mci_dev;
 	mci->blk.ops = &mci_ops;
 
-	disknum = cdev_find_free_index("disk");
+	if (host->devname) {
+		mci->blk.cdev.name = strdup(host->devname);
+	} else {
+		disknum = cdev_find_free_index("disk");
+		mci->blk.cdev.name = asprintf("disk%d", disknum);
+	}
 
-	mci->blk.cdev.name = asprintf("disk%d", disknum);
 	mci->blk.blockbits = SECTOR_SHIFT;
 	mci->blk.num_blocks = mci_calc_blk_cnt(mci->capacity, mci->blk.blockbits);
 
@@ -1409,7 +1413,7 @@ static int mci_card_probe(struct mci *mci)
 		goto on_error;
 	}
 
-	dev_info(mci->mci_dev, "registered disk%d\n", disknum);
+	dev_info(mci->mci_dev, "registered %s\n", mci->blk.cdev.name);
 
 	/* create partitions on demand */
 	rc = parse_partition_table(&mci->blk);
diff --git a/include/mci.h b/include/mci.h
index db78b9c..0041e27 100644
--- a/include/mci.h
+++ b/include/mci.h
@@ -286,6 +286,7 @@ struct mci_ios {
 /** host information */
 struct mci_host {
 	struct device_d *hw_dev;	/**< the host MCI hardware device */
+	char *devname;			/**< the devicename for the card, defaults to disk%d */
 	unsigned voltages;
 	unsigned host_caps;	/**< Host's interface capabilities, refer MMC_VDD_* */
 	unsigned f_min;		/**< host interface lower limit */
-- 
1.7.10.4


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