Hi Clement, On 10/31/2018 10:36 AM, Clément Péron wrote: > Hi Dinh, > > On Wed, 31 Oct 2018 at 15:42, Dinh Nguyen <dingu...@kernel.org> wrote: >> >> Hi Clement, >> >> On 10/31/2018 08:01 AM, Clément Péron wrote: >>> Hi, >>> >>> The patch "net: stmmac: socfpga: add additional ocp reset line for >>> Stratix10" introduce in 4.9.124 broke the ethernet on my CycloneV >>> board. >>> >>> When I boot i have this issue : >>> >>> socfpga-dwmac ff702000.ethernet: error getting reset control of ocp -2 >>> socfpga-dwmac: probe of ff702000.ethernet failed with error -2 >>> >>> Reverting the commit : 6f37f7b62baa6a71d7f3f298acb64de51275e724 fix the >>> issue. >>> >> >> Are you sure? I just booted v4.9.124 and did not see any errors. The >> error should not appear because the commit is using >> devm_reset_control_get_optional(). > > I'm booting on 4.9.130 actually, Agree with you that > devm_reset_control_get_optional should not failed but checking other > usage of this helper > https://elixir.bootlin.com/linux/v4.9.135/source/drivers/i2c/busses/i2c-mv64xxx.c#L824 > https://elixir.bootlin.com/linux/v4.9.135/source/drivers/crypto/sunxi-ss/sun4i-ss-core.c#L259 > Show that they don't check for errors except for PROBE_DEFER >
I made a mistake, I was booting linux-next. I am seeing the error with v4.9.124. It's due to this commit not getting backported: "bb475230b8e59a reset: make optional functions really optional" I have backported the patch and is available here if you like to take a look: https://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux.git/log/?h=v4.9.124_optional_reset Dinh
