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Groups > linux.kernel > #1243068

[PATCH 4/4] spi: spi-coldfire-qspi: enable RuntimePM before registering to the core

From Wolfram Sang <wsa@the-dreams.de>
Newsgroups linux.kernel
Subject [PATCH 4/4] spi: spi-coldfire-qspi: enable RuntimePM before registering to the core
Date 2015-10-09 09:00 +0200
Message-ID <qhzOP-2W9-25@gated-at.bofh.it> (permalink)
References <qhzOO-2W9-1@gated-at.bofh.it>
Organization linux.* mail to news gateway

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From: Wolfram Sang <wsa+renesas@sang-engineering.com>

The core may register clients attached to this master which may use
funtionality from the master. So, RuntimePM must be enabled before, otherwise
this will fail.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---

Not tested on HW. Found by code review.

 drivers/spi/spi-coldfire-qspi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/spi/spi-coldfire-qspi.c b/drivers/spi/spi-coldfire-qspi.c
index 688956ff5095c2..2c5fe795bb5e59 100644
--- a/drivers/spi/spi-coldfire-qspi.c
+++ b/drivers/spi/spi-coldfire-qspi.c
@@ -420,13 +420,13 @@ static int mcfqspi_probe(struct platform_device *pdev)
 	master->auto_runtime_pm = true;
 
 	platform_set_drvdata(pdev, master);
+	pm_runtime_enable(&pdev->dev);
 
 	status = devm_spi_register_master(&pdev->dev, master);
 	if (status) {
 		dev_dbg(&pdev->dev, "spi_register_master failed\n");
 		goto fail2;
 	}
-	pm_runtime_enable(&pdev->dev);
 
 	dev_info(&pdev->dev, "Coldfire QSPI bus driver\n");
 
-- 
2.1.4

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Thread

[PATCH 1/4] i2c: designware-platdrv: enable RuntimePM before registering to the core Wolfram Sang <wsa@the-dreams.de> - 2015-10-09 09:00 +0200
  [PATCH 3/4] i2c: s3c2410: enable RuntimePM before registering to the core Wolfram Sang <wsa@the-dreams.de> - 2015-10-09 09:00 +0200
  [PATCH 4/4] spi: spi-coldfire-qspi: enable RuntimePM before registering to the core Wolfram Sang <wsa@the-dreams.de> - 2015-10-09 09:00 +0200
    Re: [PATCH 4/4] spi: spi-coldfire-qspi: enable RuntimePM before  registering to the core Mark Brown <broonie@kernel.org> - 2015-10-09 13:40 +0200
  [PATCH 2/4] i2c: rcar: enable RuntimePM before registering to the core Wolfram Sang <wsa@the-dreams.de> - 2015-10-09 09:00 +0200
    Re: [PATCH 2/4] i2c: rcar: enable RuntimePM before registering to the core Geert Uytterhoeven <geert@linux-m68k.org> - 2015-10-09 10:50 +0200
      Re: [PATCH 2/4] i2c: rcar: enable RuntimePM before registering to  the core Wolfram Sang <wsa@the-dreams.de> - 2015-10-09 11:30 +0200

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