6.18-stable review patch. If anyone has any objections, please let me know.
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From: Alok Tiwari alok.a.tiwari@oracle.com
[ Upstream commit 66e245db16f0175af656cd812b6dc1a5e1f7b80a ]
The PMT feature probe creates a child device with device_create(). If device creation fail, the code pass priv->dev (which is an ERR_PTR) to dev_err_probe(), which is not a valid device pointer.
This patch change the dev_err_probe() call to use the parent auxiliary device (&auxdev->dev) and update the error message to reference the parent device name. It ensure correct error reporting and avoid passing an invalid device pointer.
Fixes: d9a078809356 ("platform/x86/intel/pmt: Add PMT Discovery driver") Signed-off-by: Alok Tiwari alok.a.tiwari@oracle.com Link: https://patch.msgid.link/20251224095133.115678-1-alok.a.tiwari@oracle.com Reviewed-by: Ilpo Järvinen ilpo.jarvinen@linux.intel.com Signed-off-by: Ilpo Järvinen ilpo.jarvinen@linux.intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/platform/x86/intel/pmt/discovery.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/platform/x86/intel/pmt/discovery.c b/drivers/platform/x86/intel/pmt/discovery.c index 9c5b4d0e1fae..e500aa327d23 100644 --- a/drivers/platform/x86/intel/pmt/discovery.c +++ b/drivers/platform/x86/intel/pmt/discovery.c @@ -548,9 +548,9 @@ static int pmt_features_probe(struct auxiliary_device *auxdev, const struct auxi priv->dev = device_create(&intel_pmt_class, &auxdev->dev, MKDEV(0, 0), priv, "%s-%s", "features", dev_name(priv->parent)); if (IS_ERR(priv->dev)) - return dev_err_probe(priv->dev, PTR_ERR(priv->dev), + return dev_err_probe(&auxdev->dev, PTR_ERR(priv->dev), "Could not create %s-%s device node\n", - "features", dev_name(priv->dev)); + "features", dev_name(priv->parent));
/* Initialize each feature */ for (i = 0; i < ivdev->num_resources; i++) {