[PATCH AUTOSEL 5.5 044/121] sh_eth: check sh_eth_cpu_data::no_tx_cntrs when dumping registers

[Sasha Levin]

From: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>

[ Upstream commit 6eaeedc1aa27a423bd89043705eca39215015bb3 ]

When adding the sh_eth_cpu_data::no_tx_cntrs flag I forgot to add the
flag check to  __sh_eth_get_regs(), causing the non-existing TX counter
registers to be considered for dumping on the R7S72100 SoC (the register
offset sanity check has the final say here)...

Fixes: ce9134dff6d9 ("sh_eth: add sh_eth_cpu_data::no_tx_cntrs flag")
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>
Tested-by: Chris Brandt <chris.brandt@xxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/net/ethernet/renesas/sh_eth.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c
index 3591285250e19..37e7cd0177b84 100644
--- a/drivers/net/ethernet/renesas/sh_eth.c
+++ b/drivers/net/ethernet/renesas/sh_eth.c
@@ -2184,10 +2184,12 @@ static size_t __sh_eth_get_regs(struct net_device *ndev, u32 *buf)
 		add_reg(BCULR);
 	add_reg(MAHR);
 	add_reg(MALR);
-	add_reg(TROCR);
-	add_reg(CDCR);
-	add_reg(LCCR);
-	add_reg(CNDCR);
+	if (!cd->no_tx_cntrs) {
+		add_reg(TROCR);
+		add_reg(CDCR);
+		add_reg(LCCR);
+		add_reg(CNDCR);
+	}
 	add_reg(CEFCR);
 	add_reg(FRECR);
 	add_reg(TSFRCR);
-- 
2.20.1