FAILED: patch "[PATCH] EDAC/altera: Use parent device for devres in" failed to apply to 6.6-stable tree

[<gregkh@linuxfoundation.org>]

The patch below does not apply to the 6.6-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y
git checkout FETCH_HEAD
git cherry-pick -x 9868f5c077dfe0b606331f2e782484f91a5789a5
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2026091620-hardwired-diffusive-ffa1@gregkh' --subject-prefix 'PATCH 6.6.y' 'HEAD^..'

Possible dependencies:



thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 9868f5c077dfe0b606331f2e782484f91a5789a5 Mon Sep 17 00:00:00 2001
From: Dinh Nguyen <dinguyen@kernel.org>
Date: Wed, 17 Jun 2026 11:43:03 -0500
Subject: [PATCH] EDAC/altera: Use parent device for devres in
 altr_portb_setup()

Anchor the devres group and the devm-managed IRQ requests in altr_portb_setup()
to the actual parent device (device->edac->dev) instead of the embedded struct
device inside the copied per-port altr_edac_device_dev.

This keeps devres_open_group(), devm_request_irq(), devres_remove_group() and
devres_release_group() all referring to the same long-lived device so the
group and the resources allocated inside it are torn down together.

Fixes: 911049845d70 ("EDAC, altera: Add Arria10 SD-MMC EDAC support")
Closes: https://sashiko.dev/#/patchset/20260503212558.2811480-1-dbgh9129%40gmail.com
Assisted-by: LLM
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20260617164303.585555-1-dinguyen@kernel.org

diff --git a/drivers/edac/altera_edac.c b/drivers/edac/altera_edac.c
index 1d1e2b5ca14c..68846f583eee 100644
--- a/drivers/edac/altera_edac.c
+++ b/drivers/edac/altera_edac.c
@@ -1534,7 +1534,7 @@ static int altr_portb_setup(struct altr_edac_device_dev *device)
 	altdev = dci->pvt_info;
 	*altdev = *device;
 
-	if (!devres_open_group(&altdev->ddev, altr_portb_setup, GFP_KERNEL))
+	if (!devres_open_group(device->edac->dev, altr_portb_setup, GFP_KERNEL))
 		return -ENOMEM;
 
 	/* Update PortB specific values */
@@ -1562,7 +1562,7 @@ static int altr_portb_setup(struct altr_edac_device_dev *device)
 		rc = -ENODEV;
 		goto err_release_group_1;
 	}
-	rc = devm_request_irq(&altdev->ddev, altdev->sb_irq,
+	rc = devm_request_irq(device->edac->dev, altdev->sb_irq,
 			      prv->ecc_irq_handler, IRQF_TRIGGER_HIGH,
 			      ecc_name, altdev);
 	if (rc) {
@@ -1584,7 +1584,7 @@ static int altr_portb_setup(struct altr_edac_device_dev *device)
 			rc = -ENODEV;
 			goto err_release_group_1;
 		}
-		rc = devm_request_irq(&altdev->ddev, altdev->db_irq,
+		rc = devm_request_irq(device->edac->dev, altdev->db_irq,
 				      prv->ecc_irq_handler, IRQF_TRIGGER_HIGH,
 				      ecc_name, altdev);
 		if (rc) {
@@ -1604,13 +1604,13 @@ static int altr_portb_setup(struct altr_edac_device_dev *device)
 
 	list_add(&altdev->next, &altdev->edac->a10_ecc_devices);
 
-	devres_remove_group(&altdev->ddev, altr_portb_setup);
+	devres_remove_group(device->edac->dev, altr_portb_setup);
 
 	return 0;
 
 err_release_group_1:
 	edac_device_free_ctl_info(dci);
-	devres_release_group(&altdev->ddev, altr_portb_setup);
+	devres_release_group(device->edac->dev, altr_portb_setup);
 	edac_printk(KERN_ERR, EDAC_DEVICE,
 		    "%s:Error setting up EDAC device: %d\n", ecc_name, rc);
 	return rc;