sh_eth: fix TSU init on SH7734/R8A7740

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It appears that the single port Ether controllers having TSU (like SH7734/
R8A7740) need the same kind of treating in sh_eth_tsu_init() as R7S72100
currently has -- they also don't have the TSU registers related e.g. to
passing the frames between ports. Add the 'sh_eth_cpu_data::dual_port'
flag and use it as a new criterion for taking a "short path" in the TSU
init sequence in order to avoid writing to the non-existent registers...

Fixes: f0e81fecd4 ("net: sh_eth: Add support SH7734")
Fixes: 73a0d90730 ("net: sh_eth: add support R8A7740")
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

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Sergei Shtylyov 2018-02-24 22:41:45 +03:00 • committed by David S. Miller

parent 4869a1476d

commit a94cf2a614

2 changed files with 6 additions and 1 deletions

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6

drivers/net/ethernet/renesas/sh_eth.c

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1

drivers/net/ethernet/renesas/sh_eth.h

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