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Date:   Fri, 25 May 2018 15:15:09 +0800
From:   Jisheng Zhang <Jisheng.Zhang@synaptics.com>
To:     Adrian Hunter <adrian.hunter@intel.com>,
        Ulf Hansson <ulf.hansson@linaro.org>,
        Florian Fainelli <f.fainelli@gmail.com>,
        Ray Jui <rjui@broadcom.com>,
        Scott Branden <sbranden@broadcom.com>,
        Ben Dooks <ben-linux@fluff.org>,
        Jaehoon Chung <jh80.chung@samsung.com>,
        Viresh Kumar <vireshk@kernel.org>,
        Patrice Chotard <patrice.chotard@st.com>
Cc:     bcm-kernel-feedback-list@broadcom.com, linux-mmc@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: [PATCH] mmc: sdhci-*: Don't emit error msg if sdhci_add_host()
 fails
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I noticed below error msg with sdhci-pxav3 on some berlin platforms:

[.....] sdhci-pxav3 f7ab0000.sdhci failed to add host

It is due to getting related vmmc or vqmmc regulator returns
-EPROBE_DEFER. It doesn't matter at all but it's confusing.

=46rom another side, if driver probing fails and the error number isn't
-EPROBE_DEFER, the core will tell us something as below:

[.....] sdhci-pxav3: probe of f7ab0000.sdhci failed with error -EXX

So it's not necessary to emit error msg if sdhci_add_host() fails. And
some other sdhci host drivers also have this issue, let's fix them
together.

Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
---
 drivers/mmc/host/sdhci-bcm-kona.c | 4 +---
 drivers/mmc/host/sdhci-pic32.c    | 4 +---
 drivers/mmc/host/sdhci-pxav2.c    | 4 +---
 drivers/mmc/host/sdhci-pxav3.c    | 4 +---
 drivers/mmc/host/sdhci-s3c.c      | 4 +---
 drivers/mmc/host/sdhci-spear.c    | 4 +---
 drivers/mmc/host/sdhci-st.c       | 4 +---
 7 files changed, 7 insertions(+), 21 deletions(-)

diff --git a/drivers/mmc/host/sdhci-bcm-kona.c b/drivers/mmc/host/sdhci-bcm=
-kona.c
index 11ca95c60bcf..bdbd4897c0f7 100644
--- a/drivers/mmc/host/sdhci-bcm-kona.c
+++ b/drivers/mmc/host/sdhci-bcm-kona.c
@@ -284,10 +284,8 @@ static int sdhci_bcm_kona_probe(struct platform_device=
 *pdev)
 	sdhci_bcm_kona_sd_init(host);
=20
 	ret =3D sdhci_add_host(host);
-	if (ret) {
-		dev_err(dev, "Failed sdhci_add_host\n");
+	if (ret)
 		goto err_reset;
-	}
=20
 	/* if device is eMMC, emulate card insert right here */
 	if (!mmc_card_is_removable(host->mmc)) {
diff --git a/drivers/mmc/host/sdhci-pic32.c b/drivers/mmc/host/sdhci-pic32.c
index a6caa49ca25a..a11e6397d4ff 100644
--- a/drivers/mmc/host/sdhci-pic32.c
+++ b/drivers/mmc/host/sdhci-pic32.c
@@ -200,10 +200,8 @@ static int pic32_sdhci_probe(struct platform_device *p=
dev)
 	}
=20
 	ret =3D sdhci_add_host(host);
-	if (ret) {
-		dev_err(&pdev->dev, "error adding host\n");
+	if (ret)
 		goto err_base_clk;
-	}
=20
 	dev_info(&pdev->dev, "Successfully added sdhci host\n");
 	return 0;
diff --git a/drivers/mmc/host/sdhci-pxav2.c b/drivers/mmc/host/sdhci-pxav2.c
index 8986f9d9cf98..2c3827f54927 100644
--- a/drivers/mmc/host/sdhci-pxav2.c
+++ b/drivers/mmc/host/sdhci-pxav2.c
@@ -221,10 +221,8 @@ static int sdhci_pxav2_probe(struct platform_device *p=
dev)
 	host->ops =3D &pxav2_sdhci_ops;
=20
 	ret =3D sdhci_add_host(host);
-	if (ret) {
-		dev_err(&pdev->dev, "failed to add host\n");
+	if (ret)
 		goto disable_clk;
-	}
=20
 	return 0;
=20
diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c
index a34434166ca7..b8e96f392428 100644
--- a/drivers/mmc/host/sdhci-pxav3.c
+++ b/drivers/mmc/host/sdhci-pxav3.c
@@ -472,10 +472,8 @@ static int sdhci_pxav3_probe(struct platform_device *p=
dev)
 	pm_suspend_ignore_children(&pdev->dev, 1);
=20
 	ret =3D sdhci_add_host(host);
-	if (ret) {
-		dev_err(&pdev->dev, "failed to add host\n");
+	if (ret)
 		goto err_add_host;
-	}
=20
 	if (host->mmc->pm_caps & MMC_PM_WAKE_SDIO_IRQ)
 		device_init_wakeup(&pdev->dev, 1);
diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
index cda83ccb2702..9ef89d00970e 100644
--- a/drivers/mmc/host/sdhci-s3c.c
+++ b/drivers/mmc/host/sdhci-s3c.c
@@ -655,10 +655,8 @@ static int sdhci_s3c_probe(struct platform_device *pde=
v)
 		goto err_req_regs;
=20
 	ret =3D sdhci_add_host(host);
-	if (ret) {
-		dev_err(dev, "sdhci_add_host() failed\n");
+	if (ret)
 		goto err_req_regs;
-	}
=20
 #ifdef CONFIG_PM
 	if (pdata->cd_type !=3D S3C_SDHCI_CD_INTERNAL)
diff --git a/drivers/mmc/host/sdhci-spear.c b/drivers/mmc/host/sdhci-spear.c
index 14511526a3a8..9247d51f2eed 100644
--- a/drivers/mmc/host/sdhci-spear.c
+++ b/drivers/mmc/host/sdhci-spear.c
@@ -126,10 +126,8 @@ static int sdhci_probe(struct platform_device *pdev)
 	}
=20
 	ret =3D sdhci_add_host(host);
-	if (ret) {
-		dev_dbg(&pdev->dev, "error adding host\n");
+	if (ret)
 		goto disable_clk;
-	}
=20
 	platform_set_drvdata(pdev, host);
=20
diff --git a/drivers/mmc/host/sdhci-st.c b/drivers/mmc/host/sdhci-st.c
index c32daed0d418..8f95647195d9 100644
--- a/drivers/mmc/host/sdhci-st.c
+++ b/drivers/mmc/host/sdhci-st.c
@@ -422,10 +422,8 @@ static int sdhci_st_probe(struct platform_device *pdev)
 	st_mmcss_cconfig(np, host);
=20
 	ret =3D sdhci_add_host(host);
-	if (ret) {
-		dev_err(&pdev->dev, "Failed sdhci_add_host\n");
+	if (ret)
 		goto err_out;
-	}
=20
 	host_version =3D readw_relaxed((host->ioaddr + SDHCI_HOST_VERSION));
=20
--=20
2.17.0