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authorJavier Martinez Canillas <javier@osg.samsung.com>2015-09-11 07:53:09 -0300
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>2015-10-01 08:32:20 -0300
commit5aa2ccfc370f0a48f16492059a95a1252d721f6c (patch)
treed9a3ad968651a68d2308ebaa866157320dae0c52 /drivers/media/i2c
parent60f4570de80264428ddbd350dc8ed1d95f9dcd9d (diff)
[media] s5c73m3: Export OF module alias information
The SPI core always reports the MODALIAS uevent as "spi:<modalias>" regardless of the mechanism that was used to register the device (i.e: OF or board code) and the table that is used later to match the driver with the device (i.e: SPI id table or OF match table). So drivers needs to export the SPI id table and this be built into the module or udev won't have the necessary information to autoload the needed driver module when the device is added. But this means that OF-only drivers needs to have both OF and SPI id tables that have to be kept in sync and also the dev node compatible manufacturer prefix is stripped when reporting the MODALIAS. Which can lead to issues if two vendors use the same SPI device name for example. To avoid the above, the SPI core behavior may be changed in the future to not require an SPI device table for OF-only drivers and report the OF module alias. So, it's better to also export the OF table even when is unused now to prevent breaking module loading when the core changes. Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Reviewed-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/i2c')
-rw-r--r--drivers/media/i2c/s5c73m3/s5c73m3-spi.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/media/i2c/s5c73m3/s5c73m3-spi.c b/drivers/media/i2c/s5c73m3/s5c73m3-spi.c
index fa4a5ebda6b2..17ac4417fb17 100644
--- a/drivers/media/i2c/s5c73m3/s5c73m3-spi.c
+++ b/drivers/media/i2c/s5c73m3/s5c73m3-spi.c
@@ -31,6 +31,7 @@ static const struct of_device_id s5c73m3_spi_ids[] = {
{ .compatible = "samsung,s5c73m3" },
{ }
};
+MODULE_DEVICE_TABLE(of, s5c73m3_spi_ids);
enum spi_direction {
SPI_DIR_RX,

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