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-xlr.ko | grep alias
alias: platform:xlr-i2cbus
After this patch:
$ modinfo drivers/i2c/busses/i2c-xlr.ko | grep alias
alias: platform:xlr-i2cbus
alias: of:N*T*Csigma,smp8642-i2cC*
alias: of:N*T*Csigma,smp8642-i2c
Signed-off-by: Javier Martinez Canillas <javier@xxxxxxxxxxxxxxx>
---
drivers/i2c/busses/i2c-xlr.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/i2c/busses/i2c-xlr.c b/drivers/i2c/busses/i2c-xlr.c
index 0968f59b6df5..ad17d88d8573 100644
--- a/drivers/i2c/busses/i2c-xlr.c
+++ b/drivers/i2c/busses/i2c-xlr.c
@@ -358,6 +358,7 @@ static const struct of_device_id xlr_i2c_dt_ids[] = {
},
{ }
};
+MODULE_DEVICE_TABLE(of, xlr_i2c_dt_ids);
static int xlr_i2c_probe(struct platform_device *pdev)
{
--
2.7.4
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