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From: Lars-Peter Clausen <lars-Qo5EllUWu/uELgA04lAiVw@public.gmane.org>
To: Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: Michal Simek
	<michal.simek-gjFFaj9aHVfQT0dZR+AlfA@public.gmane.org>,
	linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	Lars-Peter Clausen <lars-Qo5EllUWu/uELgA04lAiVw@public.gmane.org>
Subject: [PATCH] spi: xilinx: Use pdev->id instead of pdev->dev.id for the SPI bus number
Date: Thu, 10 Jul 2014 10:30:20 +0200	[thread overview]
Message-ID: <1404981020-22640-1-git-send-email-lars@metafoo.de> (raw)

The Xilinx SPI driver initializes the bus_num field of the SPI master to
pdev->dev.id. pdev->dev.id is always 0 for platform devices which causes bus
number conflicts for the SPI controller when creating multiple device instances
of the driver. Instead use pdev->id which will have the assignt platform device
id. If the device is instantiated via devicetree pdev->id is -1 which will cause
the SPI core to dynamically assign a id (or use the id defined via a alias in
the devicetree).

Signed-off-by: Lars-Peter Clausen <lars-Qo5EllUWu/uELgA04lAiVw@public.gmane.org>
---
 drivers/spi/spi-xilinx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/spi/spi-xilinx.c b/drivers/spi/spi-xilinx.c
index a3b0b99..4d8efb1 100644
--- a/drivers/spi/spi-xilinx.c
+++ b/drivers/spi/spi-xilinx.c
@@ -369,7 +369,7 @@ static int xilinx_spi_probe(struct platform_device *pdev)
 		goto put_master;
 	}
 
-	master->bus_num = pdev->dev.id;
+	master->bus_num = pdev->id;
 	master->num_chipselect = num_cs;
 	master->dev.of_node = pdev->dev.of_node;
 
-- 
1.8.0

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             reply	other threads:[~2014-07-10  8:30 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-07-10  8:30 Lars-Peter Clausen [this message]
     [not found] ` <1404981020-22640-1-git-send-email-lars-Qo5EllUWu/uELgA04lAiVw@public.gmane.org>
2014-07-10 10:39   ` [PATCH] spi: xilinx: Use pdev->id instead of pdev->dev.id for the SPI bus number Mark Brown

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