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From: Javier Martinez Canillas <javier@osg.samsung.com>
To: linux-kernel@vger.kernel.org
Cc: Javier Martinez Canillas <javier@osg.samsung.com>,
	Arnd Bergmann <arnd@arndb.de>,
	linux-iio@vger.kernel.org, Hartmut Knaack <knaack.h@gmx.de>,
	Markus Pargmann <mpa@pengutronix.de>,
	Lars-Peter Clausen <lars@metafoo.de>,
	Lee Jones <lee.jones@linaro.org>,
	Jonathan Cameron <jic23@kernel.org>,
	Peter Meerwald-Stadler <pmeerw@pmeerw.net>,
	Denis Carikli <denis@eukrea.com>
Subject: [PATCH] iio: adc: imx25-gcq: Fix module autoload
Date: Mon,  2 Jan 2017 09:45:45 -0300	[thread overview]
Message-ID: <1483361146-913-1-git-send-email-javier@osg.samsung.com> (raw)

If the driver is built as a module, autoload won't work because the module
alias information is not filled. So user-space can't match the registered
device with the corresponding module.

Export the module alias information using the MODULE_DEVICE_TABLE() macro.

Before this patch:

$ modinfo drivers/iio/adc/fsl-imx25-gcq.ko | grep alias
$

After this patch:

$ modinfo drivers/iio/adc/fsl-imx25-gcq.ko | grep alias
alias:          of:N*T*Cfsl,imx25-gcqC*
alias:          of:N*T*Cfsl,imx25-gcq

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
---

 drivers/iio/adc/fsl-imx25-gcq.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/iio/adc/fsl-imx25-gcq.c b/drivers/iio/adc/fsl-imx25-gcq.c
index 72b32c1ab257..ea264fa9e567 100644
--- a/drivers/iio/adc/fsl-imx25-gcq.c
+++ b/drivers/iio/adc/fsl-imx25-gcq.c
@@ -401,6 +401,7 @@ static const struct of_device_id mx25_gcq_ids[] = {
 	{ .compatible = "fsl,imx25-gcq", },
 	{ /* Sentinel */ }
 };
+MODULE_DEVICE_TABLE(of, mx25_gcq_ids);
 
 static struct platform_driver mx25_gcq_driver = {
 	.driver		= {
-- 
2.7.4

             reply	other threads:[~2017-01-02 12:46 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-01-02 12:45 Javier Martinez Canillas [this message]
2017-01-07 22:15 ` Jonathan Cameron

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