Patch "cpufreq: qcom-nvmem: fix memory leaks in probe error paths" 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

    cpufreq: qcom-nvmem: fix memory leaks in probe error paths

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:
     cpufreq-qcom-nvmem-fix-memory-leaks-in-probe-error-p.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 3b6f27b5250d0d617b0a74fa9c346bbfb0295a5c
Author: Javier Carrasco <javier.carrasco.cruz@xxxxxxxxx>
Date:   Thu May 23 23:24:59 2024 +0200

    cpufreq: qcom-nvmem: fix memory leaks in probe error paths
    
    [ Upstream commit d01c84b97f19f1137211e90b0a910289a560019e ]
    
    The code refactoring added new error paths between the np device node
    allocation and the call to of_node_put(), which leads to memory leaks if
    any of those errors occur.
    
    Add the missing of_node_put() in the error paths that require it.
    
    Cc: stable@xxxxxxxxxxxxxxx
    Fixes: 57f2f8b4aa0c ("cpufreq: qcom: Refactor the driver to make it easier to extend")
    Signed-off-by: Javier Carrasco <javier.carrasco.cruz@xxxxxxxxx>
    Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/cpufreq/qcom-cpufreq-nvmem.c b/drivers/cpufreq/qcom-cpufreq-nvmem.c
index 03586fee15aac..ef51dfb39baa9 100644
--- a/drivers/cpufreq/qcom-cpufreq-nvmem.c
+++ b/drivers/cpufreq/qcom-cpufreq-nvmem.c
@@ -249,23 +249,30 @@ static int qcom_cpufreq_probe(struct platform_device *pdev)
 
 	drv = devm_kzalloc(&pdev->dev, struct_size(drv, cpus, num_possible_cpus()),
 		           GFP_KERNEL);
-	if (!drv)
+	if (!drv) {
+		of_node_put(np);
 		return -ENOMEM;
+	}
 
 	match = pdev->dev.platform_data;
 	drv->data = match->data;
-	if (!drv->data)
+	if (!drv->data) {
+		of_node_put(np);
 		return -ENODEV;
+	}
 
 	if (drv->data->get_version) {
 		speedbin_nvmem = of_nvmem_cell_get(np, NULL);
-		if (IS_ERR(speedbin_nvmem))
+		if (IS_ERR(speedbin_nvmem)) {
+			of_node_put(np);
 			return dev_err_probe(cpu_dev, PTR_ERR(speedbin_nvmem),
 					     "Could not get nvmem cell\n");
+		}
 
 		ret = drv->data->get_version(cpu_dev,
 							speedbin_nvmem, &pvs_name, drv);
 		if (ret) {
+			of_node_put(np);
 			nvmem_cell_put(speedbin_nvmem);
 			return ret;
 		}