Patch "nfc: st21nfca: Fix static checker warning" has been added to the 4.5-stable tree

Patch "nfc: st21nfca: Fix static checker warning" has been added to the 4.5-stable tree

[gregkh]

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

    nfc: st21nfca: Fix static checker warning

to the 4.5-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-st21nfca-fix-static-checker-warning.patch
and it can be found in the queue-4.5 subdirectory.

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


>From b58afe6d6d3a53af165d5946f12c4b08c95acd58 Mon Sep 17 00:00:00 2001
From: Christophe Ricard <christophe.ricard@gmail.com>
Date: Sat, 30 Apr 2016 09:12:34 +0200
Subject: nfc: st21nfca: Fix static checker warning

From: Christophe Ricard <christophe.ricard@gmail.com>

commit b58afe6d6d3a53af165d5946f12c4b08c95acd58 upstream.

Fix static checker warning:
drivers/nfc/st21nfca/i2c.c:530 st21nfca_hci_i2c_acpi_request_resources()
error: 'gpiod_ena' dereferencing possible ERR_PTR()

Fix so that if no enable gpio can be retrieved an -ENODEV is returned.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: dfa8070d7f64 ("nfc: st21nfca: Add support for acpi probing for i2c device.")
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/nfc/st21nfca/i2c.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/drivers/nfc/st21nfca/i2c.c
+++ b/drivers/nfc/st21nfca/i2c.c
@@ -524,8 +524,10 @@ static int st21nfca_hci_i2c_acpi_request
 	/* Get EN GPIO from ACPI */
 	gpiod_ena = devm_gpiod_get_index(dev, ST21NFCA_GPIO_NAME_EN, 1,
 					 GPIOD_OUT_LOW);
-	if (!IS_ERR(gpiod_ena))
-		phy->gpio_ena = desc_to_gpio(gpiod_ena);
+	if (!IS_ERR(gpiod_ena)) {
+		nfc_err(dev, "Unable to get ENABLE GPIO\n");
+		return -ENODEV;
+	}
 
 	phy->gpio_ena = desc_to_gpio(gpiod_ena);
 


Patches currently in stable-queue which might be from christophe.ricard@gmail.com are

queue-4.5/nfc-st21nfca-fix-static-checker-warning.patch