linux-kernel - [PATCH v2 21/22] mmc: tmio: move {tmio_}mmc_of_parse() to tmio_mmc_host

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Date:   Sat, 25 Nov 2017 01:24:56 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     linux-mmc@...r.kernel.org,
        Wolfram Sang <wsa+renesas@...g-engineering.com>
Cc:     Simon Horman <simon.horman@...ronome.com>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        linux-renesas-soc@...r.kernel.org,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        linux-kernel@...r.kernel.org, Ulf Hansson <ulf.hansson@...aro.org>
Subject: [PATCH v2 21/22] mmc: tmio: move {tmio_}mmc_of_parse() to tmio_mmc_host_alloc()

mmc_of_parse() parses various DT properties and sets capability flags
accordingly.  However, drivers have no chance to run platform init
code depending on such flags because mmc_of_parse() is called from
tmio_mmc_host_probe().

Move mmc_of_parse() to tmio_mmc_host_alloc() so that drivers can
handle capabilities before mmc_add_host().  Move tmio_mmc_of_parse()
likewise.

Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
---

Changes in v2:
  - Newly added

 drivers/mmc/host/tmio_mmc_core.c | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/drivers/mmc/host/tmio_mmc_core.c b/drivers/mmc/host/tmio_mmc_core.c
index b51486d..02e1438 100644
--- a/drivers/mmc/host/tmio_mmc_core.c
+++ b/drivers/mmc/host/tmio_mmc_core.c
@@ -1167,6 +1167,7 @@ struct tmio_mmc_host *tmio_mmc_host_alloc(struct platform_device *pdev,
 	struct mmc_host *mmc;
 	struct resource *res;
 	void __iomem *ctl;
+	int ret;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	ctl = devm_ioremap_resource(&pdev->dev, res);
@@ -1185,9 +1186,21 @@ struct tmio_mmc_host *tmio_mmc_host_alloc(struct platform_device *pdev,
 	host->ops = tmio_mmc_ops;
 	mmc->ops = &host->ops;
 
+	ret = mmc_of_parse(host->mmc);
+	if (ret) {
+		host = ERR_PTR(ret);
+		goto free;
+	}
+
+	tmio_mmc_of_parse(pdev, pdata);
+
 	platform_set_drvdata(pdev, host);
 
 	return host;
+free:
+	mmc_free_host(mmc);
+
+	return host;
 }
 EXPORT_SYMBOL_GPL(tmio_mmc_host_alloc);
 
@@ -1212,15 +1225,9 @@ int tmio_mmc_host_probe(struct tmio_mmc_host *_host,
 	if (mmc->f_min == 0)
 		return -EINVAL;
 
-	tmio_mmc_of_parse(pdev, pdata);
-
 	if (!(pdata->flags & TMIO_MMC_HAS_IDLE_WAIT))
 		_host->write16_hook = NULL;
 
-	ret = mmc_of_parse(mmc);
-	if (ret < 0)
-		return ret;
-
 	_host->set_pwr = pdata->set_pwr;
 	_host->set_clk_div = pdata->set_clk_div;
 
-- 
2.7.4