mmc: tmio: remove indirection of 'execute_tuning' callback

After all the previous refactorization, we can now populate mmc_ops
directly and don't need a layer inbetween. The NULL-pointer check and
the error printout are already done by the MMC core.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/20200820132538.24758-7-wsa+renesas@sang-engineering.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/renesas_sdhi_core.c

@@ -519,8 +519,9 @@ static int renesas_sdhi_select_tuning(struct tmio_mmc_host *host)
 	return 0;
 }
 
-static int renesas_sdhi_execute_tuning(struct tmio_mmc_host *host, u32 opcode)
+static int renesas_sdhi_execute_tuning(struct mmc_host *mmc, u32 opcode)
 {
+	struct tmio_mmc_host *host = mmc_priv(mmc);
 	struct renesas_sdhi *priv = host_to_priv(host);
 	int i, ret;
 
@@ -543,7 +544,7 @@ static int renesas_sdhi_execute_tuning(struct tmio_mmc_host *host, u32 opcode)
 		/* Set sampling clock position */
 		sd_scc_write32(host, priv, SH_MOBILE_SDHI_SCC_TAPSET, i % priv->tap_num);
 
-		if (mmc_send_tuning(host->mmc, opcode, NULL) == 0)
+		if (mmc_send_tuning(mmc, opcode, NULL) == 0)
 			set_bit(i, priv->taps);
 
 		if (sd_scc_read32(host, priv, SH_MOBILE_SDHI_SCC_SMPCMP) == 0)
@@ -942,8 +943,8 @@ int renesas_sdhi_probe(struct platform_device *pdev,
 		if (!hit)
 			dev_warn(&host->pdev->dev, "Unknown clock rate for tuning\n");
 
-		host->execute_tuning = renesas_sdhi_execute_tuning;
 		host->check_retune = renesas_sdhi_check_scc_error;
+		host->ops.execute_tuning = renesas_sdhi_execute_tuning;
 		host->ops.prepare_hs400_tuning = renesas_sdhi_prepare_hs400_tuning;
 		host->ops.hs400_downgrade = renesas_sdhi_disable_scc;
 		host->ops.hs400_complete = renesas_sdhi_hs400_complete;

drivers/mmc/host/tmio_mmc.h

@@ -180,12 +180,6 @@ struct tmio_mmc_host {
 	void (*reset)(struct tmio_mmc_host *host);
 	bool (*check_retune)(struct tmio_mmc_host *host);
 
-	/*
-	 * Mandatory callback for tuning to occur which is optional for SDR50
-	 * and mandatory for SDR104.
-	 */
-	int (*execute_tuning)(struct tmio_mmc_host *host, u32 opcode);
-
 	void (*prepare_hs400_tuning)(struct tmio_mmc_host *host);
 	void (*hs400_downgrade)(struct tmio_mmc_host *host);
 	void (*hs400_complete)(struct tmio_mmc_host *host);

drivers/mmc/host/tmio_mmc_core.c

@@ -712,22 +712,6 @@ static int tmio_mmc_start_data(struct tmio_mmc_host *host,
 	return 0;
 }
 
-static int tmio_mmc_execute_tuning(struct mmc_host *mmc, u32 opcode)
-{
-	struct tmio_mmc_host *host = mmc_priv(mmc);
-	int ret;
-
-	if (!host->execute_tuning)
-		return 0;
-
-	ret = host->execute_tuning(host, opcode);
-
-	if (ret < 0)
-		dev_warn(&host->pdev->dev, "Tuning procedure failed\n");
-
-	return ret;
-}
-
 static void tmio_process_mrq(struct tmio_mmc_host *host,
 			     struct mmc_request *mrq)
 {
@@ -1001,7 +985,6 @@ static struct mmc_host_ops tmio_mmc_ops = {
 	.get_cd		= tmio_mmc_get_cd,
 	.enable_sdio_irq = tmio_mmc_enable_sdio_irq,
 	.multi_io_quirk	= tmio_multi_io_quirk,
-	.execute_tuning = tmio_mmc_execute_tuning,
 };
 
 static int tmio_mmc_init_ocr(struct tmio_mmc_host *host)