Patch "NFC: nfcmrvl: use nfc-device for firmware download" has been added to the 4.12-stable tree

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

NFC: nfcmrvl: use nfc-device for firmware download

to the 4.12-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:
nfc-nfcmrvl-use-nfc-device-for-firmware-download.patch
and it can be found in the queue-4.12 subdirectory.

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

From: Johan Hovold <[email protected]>
Date: Thu, 30 Mar 2017 12:15:38 +0200
Subject: NFC: nfcmrvl: use nfc-device for firmware download

From: Johan Hovold <[email protected]>

commit e5834ac22948169bbd7c45996d8d4905edd20f5e upstream.

Use the nfc- rather than phy-device in firmware-management code that needs a valid struct device.

This specifically fixes a NULL-pointer dereference in nfcmrvl_fw_dnld_init() during registration when the underlying tty is one end of a Unix98 pty.

Note that the driver still uses the phy device for any debugging, which is fine for now.

---
 drivers/nfc/nfcmrvl/fw_dnld.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

@@ -458,7 +458,7 @@ int	nfcmrvl_fw_dnld_init(struct nfcmrvl_
 
 	INIT_WORK(&priv->fw_dnld.rx_work, fw_dnld_rx_work);
 	snprintf(name, sizeof(name), "%s_nfcmrvl_fw_dnld_rx_wq",
-		 dev_name(priv->dev));
+		 dev_name(&priv->ndev->nfc_dev->dev));
 	priv->fw_dnld.rx_wq = create_singlethread_workqueue(name);
 	if (!priv->fw_dnld.rx_wq)
 		return -ENOMEM;

@@ -495,6 +495,7 @@ int nfcmrvl_fw_dnld_start(struct nci_dev
 {
 	struct nfcmrvl_private *priv = nci_get_drvdata(ndev);
 	struct nfcmrvl_fw_dnld *fw_dnld = &priv->fw_dnld;
+	int res;
 
 	if (!priv->support_fw_dnld)
 		return -ENOTSUPP;

@@ -510,7 +511,9 @@ int nfcmrvl_fw_dnld_start(struct nci_dev
 	 */
 
 	/* Retrieve FW binary */
-	if (request_firmware(&fw_dnld->fw, firmware_name, priv->dev) < 0) {
+	res = request_firmware(&fw_dnld->fw, firmware_name,
+			       &ndev->nfc_dev->dev);
+	if (res < 0) {
 		nfc_err(priv->dev, "failed to retrieve FW %s", firmware_name);
 		return -ENOENT;
 	}

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

queue-4.12/nfc-nfcmrvl-use-nfc-device-for-firmware-download.patch queue-4.12/nfc-nfcmrvl-fix-firmware-management-initialisation.patch queue-4.12/nfc-nfcmrvl-do-not-use-device-managed-resources.patch queue-4.12/thermal-max77620-fix-device-node-reference-imbalance.patch queue-4.12/nfc-nfcmrvl_uart-add-missing-tty-device-sanity-check.patch queue-4.12/nfc-fix-broken-device-allocation.patch