patch "phy: qcom-qusb2: Fix crash if nvmem cell not specified" added to usb-testing

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

phy: qcom-qusb2: Fix crash if nvmem cell not specified

to my usb git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
in the usb-testing branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will be merged to the usb-next branch sometime soon, after it passes testing, and the merge window is open.

If you have any questions about this process, please let me know.

From: Manu Gautam <[email protected]>
Date: Thu, 3 May 2018 02:36:10 +0530
Subject: phy: qcom-qusb2: Fix crash if nvmem cell not specified

Driver currently crashes due to NULL pointer deference while updating PHY tune register if nvmem cell is NULL. Since, fused value for Tune1/2 register is optional, we'd rather bail out.

---
 drivers/phy/qualcomm/phy-qcom-qusb2.c | 4 ++++
 1 file changed, 4 insertions(+)

index 94afeac1a19e..40fdef8b5b75 100644
@@ -315,6 +315,10 @@ static void qusb2_phy_set_tune2_param(struct qusb2_phy *qphy)
 	const struct qusb2_phy_cfg *cfg = qphy->cfg;
 	u8 *val;
 
+	/* efuse register is optional */
+	if (!qphy->cell)
+		return;
+
 	/*
 	 * Read efuse register having TUNE2/1 parameter's high nibble.
 	 * If efuse register shows value as 0x0, or if we fail to find

2.17.0