Patch "Bluetooth: hci_qca: don't use IS_ERR_OR_NULL() with gpiod_get_optional()" 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

    Bluetooth: hci_qca: don't use IS_ERR_OR_NULL() with gpiod_get_optional()

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:
     bluetooth-hci_qca-don-t-use-is_err_or_null-with-gpio.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 4c8e999fc138cae10a44336fefa4ce8519d86f10
Author: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
Date:   Thu Feb 8 17:40:17 2024 +0100

    Bluetooth: hci_qca: don't use IS_ERR_OR_NULL() with gpiod_get_optional()
    
    [ Upstream commit 56d074d26c5828773b00b2185dd7e1d08273b8e8 ]
    
    The optional variants for the gpiod_get() family of functions return NULL
    if the GPIO in question is not associated with this device. They return
    ERR_PTR() on any other error. NULL descriptors are graciously handled by
    GPIOLIB and can be safely passed to any of the GPIO consumer interfaces
    as they will return 0 and act as if the function succeeded. If one is
    using the optional variant, then there's no point in checking for NULL.
    
    Fixes: 6845667146a2 ("Bluetooth: hci_qca: Fix NULL vs IS_ERR_OR_NULL check in qca_serdev_probe")
    Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
    Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
index f9abcc13b4bcd..f2d4985e036e4 100644
--- a/drivers/bluetooth/hci_qca.c
+++ b/drivers/bluetooth/hci_qca.c
@@ -2295,7 +2295,7 @@ static int qca_serdev_probe(struct serdev_device *serdev)
 
 		qcadev->bt_en = devm_gpiod_get_optional(&serdev->dev, "enable",
 					       GPIOD_OUT_LOW);
-		if (IS_ERR_OR_NULL(qcadev->bt_en) &&
+		if (IS_ERR(qcadev->bt_en) &&
 		    (data->soc_type == QCA_WCN6750 ||
 		     data->soc_type == QCA_WCN6855)) {
 			dev_err(&serdev->dev, "failed to acquire BT_EN gpio\n");
@@ -2304,7 +2304,7 @@ static int qca_serdev_probe(struct serdev_device *serdev)
 
 		qcadev->sw_ctrl = devm_gpiod_get_optional(&serdev->dev, "swctrl",
 					       GPIOD_IN);
-		if (IS_ERR_OR_NULL(qcadev->sw_ctrl) &&
+		if (IS_ERR(qcadev->sw_ctrl) &&
 		    (data->soc_type == QCA_WCN6750 ||
 		     data->soc_type == QCA_WCN6855 ||
 		     data->soc_type == QCA_WCN7850))
@@ -2326,7 +2326,7 @@ static int qca_serdev_probe(struct serdev_device *serdev)
 	default:
 		qcadev->bt_en = devm_gpiod_get_optional(&serdev->dev, "enable",
 					       GPIOD_OUT_LOW);
-		if (IS_ERR_OR_NULL(qcadev->bt_en)) {
+		if (IS_ERR(qcadev->bt_en)) {
 			dev_warn(&serdev->dev, "failed to acquire enable gpio\n");
 			power_ctrl_enabled = false;
 		}