From mboxrd@z Thu Jan 1 00:00:00 1970 From: jiri.prchal@aksignal.cz (=?UTF-8?B?SmnFmcOtIFByY2hhbA==?=) Date: Tue, 16 Jun 2015 15:10:51 +0200 Subject: [BUG] at91: macb: does not work Message-ID: <5580205B.1030804@aksignal.cz> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi, in v4.1-rc8 does not work ethernet. It normally gets up, but no data are going through. [ 4.400000] macb f802c000.ethernet (unnamed net_device) (uninitialized): invalid hw address, using random [ 4.510000] macb f802c000.ethernet eth0: Cadence MACB rev 0x0001010c at 0xf802c000 irq 37 (52:30:8f:6b:9c:b7) [ 4.520000] macb f802c000.ethernet eth0: attached PHY driver [Generic PHY] (mii_bus:phy_addr=f802c000.etherne:03, irq=-1) [ 15.510000] macb f802c000.ethernet eth0: link up (100/Full) / # ip -s link ls eth0 2: eth0: mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000 link/ether a2:61:fe:17:65:b1 brd ff:ff:ff:ff:ff:ff RX: bytes packets errors dropped overrun mcast 0 0 0 0 0 0 TX: bytes packets errors dropped carrier collsns 0 0 0 0 0 0 In v4.0.5 it's working. I bisected it and found: a848748959d554666b34cffc08ef2d23f4bb2990 is the first bad commit commit a848748959d554666b34cffc08ef2d23f4bb2990 Author: Boris BREZILLON Date: Sat Mar 7 07:23:30 2015 +0100 net: macb: remove #if defined(CONFIG_ARCH_AT91) sections With multi platform support those sections could lead to unexpected behavior if both ARCH_AT91 and another ARM SoC using the MACB IP are selected. Add two new capabilities to encode the default MII mode and the presence of a CLKEN bit in USRIO register. Then define the appropriate config for IPs embedded in at91 SoCs. Signed-off-by: Boris Brezillon Reviewed-by: Alexandre Belloni Signed-off-by: David S. Miller :040000 040000 1c87dbb47362b56e88a0e7256c991c64cf60e0bf af0bcc11f81aebf2c64afa5cd53766d494ea3fdb M drivers Jiri