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Groups > linux.kernel > #1503364

[PATCH 1/4] i2c: jz4780: Fix module autoload

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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/i2c/busses/i2c-jz4780.ko | grep alias
$

After this patch:

$ modinfo drivers/i2c/busses/i2c-jz4780.ko | grep alias
alias:          of:N*T*Cingenic,jz4780-i2cC*
alias:          of:N*T*Cingenic,jz4780-i2c

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

 drivers/i2c/busses/i2c-jz4780.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/i2c/busses/i2c-jz4780.c b/drivers/i2c/busses/i2c-jz4780.c
index b8ea62105f42..30132c3957cd 100644
--- a/drivers/i2c/busses/i2c-jz4780.c
+++ b/drivers/i2c/busses/i2c-jz4780.c
@@ -729,6 +729,7 @@ static const struct of_device_id jz4780_i2c_of_matches[] = {
 	{ .compatible = "ingenic,jz4780-i2c", },
 	{ /* sentinel */ }
 };
+MODULE_DEVICE_TABLE(of, jz4780_i2c_of_matches);
 
 static int jz4780_i2c_probe(struct platform_device *pdev)
 {
-- 
2.7.4

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[PATCH 0/4] i2c: Fix module autoload for some i2c busses platform drivers Javier Martinez Canillas <javier@osg.samsung.com> - 2016-10-18 23:10 +0200
  [PATCH 3/4] i2c: xlr: Fix module autoload for OF registration Javier Martinez Canillas <javier@osg.samsung.com> - 2016-10-18 23:10 +0200
  [PATCH 2/4] i2c: xlp9xx: Fix module autoload Javier Martinez Canillas <javier@osg.samsung.com> - 2016-10-18 23:10 +0200
  [PATCH 4/4] i2c: digicolor: Fix module autoload Javier Martinez Canillas <javier@osg.samsung.com> - 2016-10-18 23:10 +0200
    Re: [PATCH 4/4] i2c: digicolor: Fix module autoload Baruch Siach <baruch@tkos.co.il> - 2016-10-19 07:10 +0200
  [PATCH 1/4] i2c: jz4780: Fix module autoload Javier Martinez Canillas <javier@osg.samsung.com> - 2016-10-18 23:10 +0200
  Re: [PATCH 0/4] i2c: Fix module autoload for some i2c busses  platform drivers Wolfram Sang <wsa@the-dreams.de> - 2016-10-25 11:40 +0200

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