Re: [PATCH 1/3] net: stmmac: explicitly deassert GMAC_AHB_RESET

[Matthew Hagan]

On 06/06/2021 04:24, Bjorn Andersson wrote:

>> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
>> index 97a1fedcc9ac..d8ae58bdbbe3 100644
>> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
>> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
>> @@ -600,6 +600,13 @@ stmmac_probe_config_dt(struct platform_device *pdev, u8 *mac)
>>  		goto error_hw_init;
>>  	}
>>  
>> +	plat->stmmac_ahb_rst = devm_reset_control_get_optional_shared(
>> +							&pdev->dev, "ahb");
>> +	if (IS_ERR(plat->stmmac_ahb_rst)) {
>> +		ret = plat->stmmac_ahb_rst;
> You need a PTR_ERR() around the plat->stmmac_ahb_rst.

This is giving a warning. Shouldn't v1 be kept as it is here? Please refer
to "net: stmmac: platform: use optional clk/reset get APIs" [1] which
modified error handling for plat->stmmac_rst. PTR_ERR() would then be
called by the parent function on the returned value of ret.

[1]: https://lore.kernel.org/netdev/20201112092606.5173aa6f@xhacker.debian/

Thanks,
Matthew