Patch "ASoC: rt5677: Add OF device ID table" has been added to the 4.9-stable tree

This is a note to let you know that I've just added the patch titled

ASoC: rt5677: Add OF device ID table

to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:

     asoc-rt5677-add-of-device-id-table.patch

and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Javier Martinez Canillas <[email protected]>
Date: Tue, 4 Apr 2017 15:26:30 -0400
Subject: ASoC: rt5677: Add OF device ID table

From: Javier Martinez Canillas <[email protected]>

[ Upstream commit 7b87463edf3e2c16d72eeea3d1cf3c12bb5487c6 ]

The driver doesn't have a struct of_device_id table but supported devices are registered via Device Trees. This is working on the assumption that a I2C device registered via OF will always match a legacy I2C device ID and that the MODALIAS reported will always be of the form i2c:<device>.

But this could change in the future so the correct approach is to have an OF device ID table if the devices are registered via OF.

Before this patch:

$ modinfo sound/soc/codecs/snd-soc-rt5677.ko | grep alias
alias:          i2c:RT5677CE:00
alias:          i2c:rt5676
alias:          i2c:rt5677

After this patch:

$ modinfo sound/soc/codecs/snd-soc-rt5677.ko | grep alias
alias:          of:N*T*Crealtek,rt5677C*
alias:          of:N*T*Crealtek,rt5677
alias:          i2c:RT5677CE:00
alias:          i2c:rt5676
alias:          i2c:rt5677

---
 sound/soc/codecs/rt5677.c |    7 +++++++
 1 file changed, 7 insertions(+)

@@ -5035,6 +5035,12 @@ static const struct i2c_device_id rt5677
 };
 MODULE_DEVICE_TABLE(i2c, rt5677_i2c_id);
 
+static const struct of_device_id rt5677_of_match[] = {
+	{ .compatible = "realtek,rt5677", },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, rt5677_of_match);
+
 static const struct acpi_gpio_params plug_det_gpio = { RT5677_GPIO_PLUG_DET, 0, false };
 static const struct acpi_gpio_params mic_present_gpio = { RT5677_GPIO_MIC_PRESENT_L, 0, false };
 static const struct acpi_gpio_params headphone_enable_gpio = { RT5677_GPIO_HP_AMP_SHDN_L, 0, false };

@@ -5294,6 +5300,7 @@ static int rt5677_i2c_remove(struct i2c_
 static struct i2c_driver rt5677_i2c_driver = {
 	.driver = {
 		.name = "rt5677",
+		.of_match_table = rt5677_of_match,
 	},
 	.probe = rt5677_i2c_probe,
 	.remove   = rt5677_i2c_remove,

Patches currently in stable-queue which might be from [email protected] are

queue-4.9/asoc-rt5677-add-of-device-id-table.patch queue-4.9/regulator-core-limit-propagation-of-parent-voltage-count-and-list.patch queue-4.9/input-qt1070-add-of-device-id-table.patch