[PATCH 3/6] mci: cleanup code around ready_for_use flag

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

struct mci::ready_for_use is a flag, thus should be boolean. Also
no need to have an extra function which returns a negative error
code when the flag is set. Just check for the flag where needed.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/mci/mci-core.c | 29 ++++-------------------------
 include/mci.h          |  2 +-
 2 files changed, 5 insertions(+), 26 deletions(-)

diff --git a/drivers/mci/mci-core.c b/drivers/mci/mci-core.c
index 975896d2d8..f29dc84f93 100644
--- a/drivers/mci/mci-core.c
+++ b/drivers/mci/mci-core.c
@@ -2373,7 +2373,7 @@ static void mci_info(struct device *dev)
 	struct mci_host *host = mci->host;
 	int bw;
 
-	if (mci->ready_for_use == 0) {
+	if (!mci->ready_for_use) {
 		printf(" No information available:\n  MCI card not probed yet\n");
 		return;
 	}
@@ -2455,23 +2455,6 @@ static void mci_parse_cid(struct mci *mci)
 	dev_add_param_uint32_fixed(dev, "cid_month", mci->cid.month, "%0u");
 }
 
-/**
- * Check if the MCI card is already probed
- * @param mci MCI device instance
- * @return 0 when not probed yet, -EPERM if already probed
- *
- * @a barebox cannot really cope with hot plugging. So, probing an attached
- * MCI card is a one time only job. If its already done, there is no way to
- * return.
- */
-static int mci_check_if_already_initialized(struct mci *mci)
-{
-	if (mci->ready_for_use != 0)
-		return -EPERM;
-
-	return 0;
-}
-
 static struct block_device_ops mci_ops = {
 	.read = mci_sd_read,
 	.write = IS_ENABLED(CONFIG_MCI_WRITE) ? mci_sd_write : NULL,
@@ -2716,7 +2699,7 @@ static int mci_card_probe(struct mci *mci)
 	}
 
 	dev_dbg(&mci->dev, "Card is up and running now, registering as a disk\n");
-	mci->ready_for_use = 1;	/* TODO now or later? */
+	mci->ready_for_use = true; /* TODO now or later? */
 
 	for (i = 0; i < mci->nr_parts; i++) {
 		struct mci_part *part = &mci->part[i];
@@ -2775,8 +2758,7 @@ static int mci_set_probe(struct param_d *param, void *priv)
 	if (!mci->probe)
 		return 0;
 
-	rc = mci_check_if_already_initialized(mci);
-	if (rc != 0)
+	if (mci->ready_for_use)
 		return 0;
 
 	rc = mci_card_probe(mci);
@@ -2788,10 +2770,7 @@ static int mci_set_probe(struct param_d *param, void *priv)
 
 int mci_detect_card(struct mci_host *host)
 {
-	int rc;
-
-	rc = mci_check_if_already_initialized(host->mci);
-	if (rc != 0)
+	if (host->mci->ready_for_use)
 		return 0;
 
 	return mci_card_probe(host->mci);
diff --git a/include/mci.h b/include/mci.h
index 689ca7167f..db1333999a 100644
--- a/include/mci.h
+++ b/include/mci.h
@@ -660,7 +660,7 @@ struct mci {
 	unsigned write_bl_len;
 	unsigned erase_grp_size;
 	uint64_t capacity;	/**< Card's data capacity in bytes */
-	int ready_for_use;	/** true if already probed */
+	bool ready_for_use;	/** true if already probed */
 	int dsr_imp;		/**< DSR implementation state from CSD */
 	u8 *ext_csd;
 	int probe;

-- 
2.39.5