From: Alexandre Torgue <alexandre.torgue@st.com>
To: Giuseppe Cavallaro <peppe.cavallaro@st.com>,
Jose Abreu <joabreu@synopsys.com>, <davem@davemloft.net>
Cc: netdev@vger.kernel.org,
Alexandre Torgue <alexandre.torgue@st.com>,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [net-next] net: stmmac: handle endianness in dwmac4_get_timestamp
Date: Thu, 14 Feb 2019 18:26:16 +0100 [thread overview]
Message-ID: <1550165176-10099-1-git-send-email-alexandre.torgue@st.com> (raw)
GMAC IP is little-endian and used on several kind of CPU (big or little
endian). Main callbacks functions of the stmmac drivers take care about
it. It was not the case for dwmac4_get_timestamp function.
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c
index 20299f6..736e296 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c
@@ -241,15 +241,18 @@ static inline void dwmac4_get_timestamp(void *desc, u32 ats, u64 *ts)
static int dwmac4_rx_check_timestamp(void *desc)
{
struct dma_desc *p = (struct dma_desc *)desc;
+ unsigned int rdes0 = le32_to_cpu(p->des0);
+ unsigned int rdes1 = le32_to_cpu(p->des1);
+ unsigned int rdes3 = le32_to_cpu(p->des3);
u32 own, ctxt;
int ret = 1;
- own = p->des3 & RDES3_OWN;
- ctxt = ((p->des3 & RDES3_CONTEXT_DESCRIPTOR)
+ own = rdes3 & RDES3_OWN;
+ ctxt = ((rdes3 & RDES3_CONTEXT_DESCRIPTOR)
>> RDES3_CONTEXT_DESCRIPTOR_SHIFT);
if (likely(!own && ctxt)) {
- if ((p->des0 == 0xffffffff) && (p->des1 == 0xffffffff))
+ if ((rdes0 == 0xffffffff) && (rdes1 == 0xffffffff))
/* Corrupted value */
ret = -EINVAL;
else
--
2.7.4
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next reply other threads:[~2019-02-14 17:26 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-14 17:26 Alexandre Torgue [this message]
2019-02-14 18:09 ` [net-next] net: stmmac: handle endianness in dwmac4_get_timestamp Florian Fainelli
2019-02-15 9:09 ` Alexandre Torgue
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