Patch "drm/tegra: output: Fix missing i2c_put_adapter() in the error handling paths of tegra_output_probe()" has been added to the 6.6-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

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

    drm/tegra: output: Fix missing i2c_put_adapter() in the error handling paths of tegra_output_probe()

to the 6.6-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:
     drm-tegra-output-fix-missing-i2c_put_adapter-in-the-.patch
and it can be found in the queue-6.6 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 35c73db8bca9c0456e9e46109d11f17dfd106073
Author: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
Date:   Sat Sep 2 17:22:13 2023 +0200

    drm/tegra: output: Fix missing i2c_put_adapter() in the error handling paths of tegra_output_probe()
    
    [ Upstream commit 2db4578ef6ffb2b52115ca0ebf897b60ec559556 ]
    
    If an error occurs after a successful of_get_i2c_adapter_by_node() call, it
    should be undone by a corresponding i2c_put_adapter().
    
    Add the missing i2c_put_adapter() call.
    
    Fixes: 9be7d864cf07 ("drm/tegra: Implement panel support")
    Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
    Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
    Link: https://patchwork.freedesktop.org/patch/msgid/b38604178991e1f08b2cda219103be266be2d680.1693667005.git.christophe.jaillet@xxxxxxxxxx
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/gpu/drm/tegra/output.c b/drivers/gpu/drm/tegra/output.c
index dc2dcb5ca1c89..d7d2389ac2f5a 100644
--- a/drivers/gpu/drm/tegra/output.c
+++ b/drivers/gpu/drm/tegra/output.c
@@ -142,8 +142,10 @@ int tegra_output_probe(struct tegra_output *output)
 					GPIOD_IN,
 					"HDMI hotplug detect");
 	if (IS_ERR(output->hpd_gpio)) {
-		if (PTR_ERR(output->hpd_gpio) != -ENOENT)
-			return PTR_ERR(output->hpd_gpio);
+		if (PTR_ERR(output->hpd_gpio) != -ENOENT) {
+			err = PTR_ERR(output->hpd_gpio);
+			goto put_i2c;
+		}
 
 		output->hpd_gpio = NULL;
 	}
@@ -152,7 +154,7 @@ int tegra_output_probe(struct tegra_output *output)
 		err = gpiod_to_irq(output->hpd_gpio);
 		if (err < 0) {
 			dev_err(output->dev, "gpiod_to_irq(): %d\n", err);
-			return err;
+			goto put_i2c;
 		}
 
 		output->hpd_irq = err;
@@ -165,7 +167,7 @@ int tegra_output_probe(struct tegra_output *output)
 		if (err < 0) {
 			dev_err(output->dev, "failed to request IRQ#%u: %d\n",
 				output->hpd_irq, err);
-			return err;
+			goto put_i2c;
 		}
 
 		output->connector.polled = DRM_CONNECTOR_POLL_HPD;
@@ -179,6 +181,12 @@ int tegra_output_probe(struct tegra_output *output)
 	}
 
 	return 0;
+
+put_i2c:
+	if (output->ddc)
+		i2c_put_adapter(output->ddc);
+
+	return err;
 }
 
 void tegra_output_remove(struct tegra_output *output)