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Message-ID: <a62c35de-7afa-14ec-5ca6-05bd61b6d09d@st.com> Date: Thu, 14 Feb 2019 16:00:54 +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 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 ? regards Alex > > Thanks, > Jose Miguel Abreu > >> if (likely(le32_to_cpu(p->des1) & RDES1_TIMESTAMP_AVAILABLE)) { >> int i = 0; >> >>
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