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From: Franklin S Cooper Jr <fcooper@ti.com>
To: wsa@the-dreams.de, robh+dt@kernel.org, linux@armlinux.org.uk,
	nsekhar@ti.com, linux-i2c@vger.kernel.org,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, grygorii.strashko@ti.com,
	vigneshr@ti.com
Cc: Franklin S Cooper Jr <fcooper@ti.com>
Subject: [PATCH v2 1/3] i2c: davinci: Preserve return value of devm_clk_get
Date: Wed, 16 Aug 2017 17:17:13 -0500	[thread overview]
Message-ID: <20170816221715.15027-2-fcooper@ti.com> (raw)
In-Reply-To: <20170816221715.15027-1-fcooper@ti.com>

The i2c driver can run into driver dependency issues if its loaded
before a clock driver it depends on. Therefore, EPROBE_DEFER may be
returned by devm_clk_get and should be returned in probe to allow the
kernel to reprobe the driver at a later time. This patch allows the error
value returned by devm_clk_get to be passed through and not overwritten.

Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
---
 drivers/i2c/busses/i2c-davinci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/i2c/busses/i2c-davinci.c b/drivers/i2c/busses/i2c-davinci.c
index 33ca9a3..b8c4353 100644
--- a/drivers/i2c/busses/i2c-davinci.c
+++ b/drivers/i2c/busses/i2c-davinci.c
@@ -801,7 +801,7 @@ static int davinci_i2c_probe(struct platform_device *pdev)
 
 	dev->clk = devm_clk_get(&pdev->dev, NULL);
 	if (IS_ERR(dev->clk))
-		return -ENODEV;
+		return PTR_ERR(dev->clk);
 	clk_prepare_enable(dev->clk);
 
 	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-- 
2.9.4.dirty

  reply	other threads:[~2017-08-16 22:17 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-08-16 22:17 [PATCH v2 0/3] ARM: dts: keystone-k2g: Add I2C support for 66AK2G Franklin S Cooper Jr
2017-08-16 22:17 ` Franklin S Cooper Jr [this message]
2017-08-21  9:40   ` [PATCH v2 1/3] i2c: davinci: Preserve return value of devm_clk_get Sekhar Nori
     [not found]   ` <20170816221715.15027-2-fcooper-l0cyMroinI0@public.gmane.org>
2017-08-27 13:34     ` Wolfram Sang
2017-08-16 22:17 ` [PATCH v2 2/3] i2c: davinci: Add PM Runtime Support Franklin S Cooper Jr
2017-08-17 16:24   ` Wolfram Sang
2017-08-21  9:09     ` Sekhar Nori
2017-08-21  9:05   ` Sekhar Nori
2017-08-22  1:17     ` Franklin S Cooper Jr
     [not found]       ` <d06ef5c6-6501-eca6-2fa2-976d085091b2-l0cyMroinI0@public.gmane.org>
2017-08-22  5:22         ` Sekhar Nori
     [not found] ` <20170816221715.15027-1-fcooper-l0cyMroinI0@public.gmane.org>
2017-08-16 22:17   ` [PATCH v2 3/3] dt-bindings: i2c: i2c-davinci: Update binding for 66AK2Gx pwr dm property Franklin S Cooper Jr
     [not found]     ` <20170816221715.15027-4-fcooper-l0cyMroinI0@public.gmane.org>
2017-08-21  9:51       ` Sekhar Nori

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