[PATCH net-next 03/18] ptp: ocp: Skip I2C flash read when there is no controller.
From: Jonathan Lemon <hidden>
Date: 2021-09-15 02:16:43
Subsystem:
networking drivers, opencompute ptp clock driver, ptp hardware clock support, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Vadim Fedorenko, Richard Cochran, Linus Torvalds
If an I2C controller isn't present, don't try and read the I2C flash. Signed-off-by: Jonathan Lemon <redacted> --- drivers/ptp/ptp_ocp.c | 7 +++++-- 1 file 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");
--
2.31.1