| Message ID | 20200522213059.1535892-2-jeremy.linton@arm.com |
|---|---|
| State | New |
| Headers | show |
| Series | [RFC,01/11] net: phy: Don't report success if devices weren't found | expand |
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index ac2784192472..245899b58a7d 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -742,6 +742,12 @@ static int get_phy_c45_ids(struct mii_bus *bus, int addr, u32 *phy_id, } } + /* no reported devices */ + if (*devs == 0) { + *phy_id = 0xffffffff; + return 0; + } + /* Now probe Device Identifiers for each device present. */ for (i = 1; i < num_ids; i++) { if (!(c45_ids->devices_in_package & (1 << i)))
C45 devices are to return 0 for registers they haven't implemented. This means in theory we can terminate the device search loop without finding any MMDs. In that case we want to immediately return indicating that nothing was found rather than continuing to probe and falling into the success state at the bottom. Signed-off-by: Jeremy Linton <jeremy.linton@arm.com> --- drivers/net/phy/phy_device.c | 6 ++++++ 1 file changed, 6 insertions(+)