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ptp: ocp: Skip I2C flash read when there is no controller.

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If an I2C controller isn't present, don't try and read the I2C flash.

Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jonathan Lemon 2021-09-14 19:16:21 -07:00 committed by David S. Miller
parent 498ad3f438
commit 1447149d65
1 changed files with 5 additions and 2 deletions
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7
drivers/ptp/ptp_ocp.c
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@ -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");