mmc: core: Re-factor code for sending CID

Instead of having the caller to check for SPI mode, let's leave that to
internals of mmc_send_cid(). In this way the code gets cleaner and it
becomes clear what is specific to SPI and non-SPI mode.

Signed-off-by: Ulf Hansson <[e-mail]>
Reviewed-by: Linus Walleij <[e-mail]>
Reviewed-by: Shawn Lin <[e-mail]>

drivers/mmc/core/mmc.c

···
 	/*
 	 * Fetch CID from card.
 	 */
-	if (mmc_host_is_spi(host))
-		err = mmc_send_cid(host, cid);
-	else
-		err = mmc_all_send_cid(host, cid);
+	err = mmc_send_cid(host, cid);
 	if (err)
 		goto err;
 

drivers/mmc/core/mmc_ops.c

···
 	return err;
 }
 
-int mmc_all_send_cid(struct mmc_host *host, u32 *cid)
+static int mmc_all_send_cid(struct mmc_host *host, u32 *cid)
 {
 	int err;
 	struct mmc_command cmd = {};
···
 	return ret;
 }
 
-int mmc_send_cid(struct mmc_host *host, u32 *cid)
+static int mmc_spi_send_cid(struct mmc_host *host, u32 *cid)
 {
 	int ret, i;
 	__be32 *cid_tmp;
···
 err:
 	kfree(cid_tmp);
 	return ret;
+}
+
+int mmc_send_cid(struct mmc_host *host, u32 *cid)
+{
+	if (mmc_host_is_spi(host))
+		return mmc_spi_send_cid(host, cid);
+
+	return mmc_all_send_cid(host, cid);
 }
 
 int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd)

drivers/mmc/core/mmc_ops.h

···
 int mmc_set_dsr(struct mmc_host *host);
 int mmc_go_idle(struct mmc_host *host);
 int mmc_send_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr);
-int mmc_all_send_cid(struct mmc_host *host, u32 *cid);
 int mmc_set_relative_addr(struct mmc_card *card);
 int mmc_send_csd(struct mmc_card *card, u32 *csd);
 int __mmc_send_status(struct mmc_card *card, u32 *status, unsigned int retries);

drivers/mmc/core/sd.c

···
 		}
 	}
 
-	if (mmc_host_is_spi(host))
-		err = mmc_send_cid(host, cid);
-	else
-		err = mmc_all_send_cid(host, cid);
-
+	err = mmc_send_cid(host, cid);
 	return err;
 }