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Message-ID: <9cfeff02-0bee-d15b-89f9-c75420c4f5eb@st.com> Date: Thu, 14 Feb 2019 16:56:05 +0100 From: Alexandre Torgue <alexandre.torgue@...com> To: Jose Abreu <jose.abreu@...opsys.com>, Giuseppe Cavallaro <peppe.cavallaro@...com>, <davem@...emloft.net> CC: <netdev@...r.kernel.org>, <linux-stm32@...md-mailman.stormreply.com>, <linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org> Subject: Re: [net-next, PATCH] net: stmmac: use correct define to get rx timestamp on GMAC4 On 2/14/19 4:30 PM, Jose Abreu wrote: > On 2/14/2019 3:00 PM, Alexandre Torgue wrote: >> Hi Jose >> >> On 2/14/19 3:18 PM, Jose Abreu wrote: >>> Hi Alexandre, >>> >>> On 2/14/2019 2:12 PM, Alexandre Torgue wrote: >>>> In dwmac4_wrback_get_rx_timestamp_status we looking for a RX >>>> timestamp. >>>> For that receive descriptors are handled and so we should use >>>> defines >>>> related to receive descriptors. It'll no change the functional >>>> behavior >>>> as RDES3_RDES1_VALID=TDES3_RS1V=BIT(26) but it makes code >>>> easier to read. >>>> >>>> Signed-off-by: Alexandre Torgue <alexandre.torgue@...com> >>>> >>>> diff --git >>>> a/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c >>>> b/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c >>>> index 20299f6..9f062b3 100644 >>>> --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c >>>> +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c >>>> @@ -268,7 +268,7 @@ static int >>>> dwmac4_wrback_get_rx_timestamp_status(void *desc, void >>>> *next_desc, >>>> int ret = -EINVAL; >>>> /* Get the status from normal w/b descriptor */ >>>> - if (likely(p->des3 & TDES3_RS1V)) { >>>> + if (likely(p->des3 & RDES3_RDES1_VALID)) { >>> >>> Shouldn't this also use le32_to_cpu() like bellow ? >> >> I agree. I focused on cosmetic but yes you are right, we have to >> take car about endianness as this IP is used by different >> processors (using different endianness). I gonna send a v2. >> I think dwmac4_rx_check_timestamp have the same kind of issue. >> Another patch should be sent for it. no ? > > Yeah. Maybe you can send all of that in this v2 patch also ? I'll send another one separately, in order to have a correct commit header. I send it now. > > Thanks, > Jose Miguel Abreu > >> >> regards >> Alex >> >> >> >>> >>> Thanks, >>> Jose Miguel Abreu >>> >>>> if (likely(le32_to_cpu(p->des1) & >>>> RDES1_TIMESTAMP_AVAILABLE)) { >>>> int i = 0; >>>>
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