When using devicetree i2c_board_info.type is set to the compatible
string with the vendor prefix removed. For I2C devices described via
ACPI the i2c_board_info.type string is set to the ACPI device name. When
using ACPI and DT ids this string ends up something like "PRP0001:00".

If the of_compatible property is present try to use that instead. This
makes it easier to instantiate i2c drivers through ACPI with DT ids.

Signed-off-by: Dan O'Donovan <d...@emutex.com>
Reviewed-by: Andy Shevchenko <andy.shevche...@gmail.com>
Reviewed-by: Jarkko Nikula <jarkko.nik...@linux.intel.com>
Tested-by: Jarkko Nikula <jarkko.nik...@linux.intel.com>
Acked-by: Wolfram Sang <w...@the-dreams.de>
---
 drivers/i2c/i2c-core.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index 583e950..1e52395 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -221,7 +221,8 @@ static int i2c_acpi_get_info(struct acpi_device *adev,
 
        acpi_dev_free_resource_list(&resource_list);
 
-       strlcpy(info->type, dev_name(&adev->dev), sizeof(info->type));
+       acpi_set_modalias(adev, dev_name(&adev->dev), info->type,
+                         sizeof(info->type));
 
        return 0;
 }
-- 
2.7.4

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