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path: root/drivers/ptp/ptp_ocp.c
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Diffstat (limited to 'drivers/ptp/ptp_ocp.c')
-rw-r--r--drivers/ptp/ptp_ocp.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/ptp/ptp_ocp.c b/drivers/ptp/ptp_ocp.c
index 2a6cc762c60e..196a457929f0 100644
--- a/drivers/ptp/ptp_ocp.c
+++ b/drivers/ptp/ptp_ocp.c
@@ -228,8 +228,8 @@ static int ptp_ocp_ts_enable(void *priv, bool enable);
* 3: GPS
* 4: GPS2 (n/c)
* 5: MAC
- * 6: SPI IMU (inertial measurement unit)
- * 7: I2C oscillator
+ * 6: N/C
+ * 7: I2C controller
* 8: HWICAP
* 9: SPI Flash
*/
@@ -706,6 +706,9 @@ ptp_ocp_get_serial_number(struct ptp_ocp *bp)
struct device *dev;
int err;
+ if (!bp->i2c_ctrl)
+ return;
+
dev = device_find_child(&bp->i2c_ctrl->dev, NULL, ptp_ocp_firstchild);
if (!dev) {
dev_err(&bp->pdev->dev, "Can't find I2C adapter\n");