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Date: Mon, 21 Sep 2020 11:35:24 +0200 From: Christophe ROULLIER <christophe.roullier@...com> To: <netdev@...r.kernel.org> Subject: Question on commit: [PATCH] net: stmmac: Delete txtimer in suspend() Hi all, I would like to know if you have already seen this behavior : Without this patch https://patchwork.ozlabs.org/project/netdev/patch/20200201020124.5989-1-nicoleotsuka@gmail.com/, during suspend/resume sequence on STM32MP15 (stmmac driver): [ 69.184175] dwc2 49000000.usb-otg: suspending usb gadget configfs-gadget [ 69.358831] stm32-dwmac 5800a000.ethernet eth0: Link is Down [ 69.370345] Disabling non-boot CPUs ... [ 69.371309] CPU1 killed. [ 69.379201] Enabling non-boot CPUs ... [ 69.382421] CPU1 is up [ 69.402201] dwmac4: Master AXI performs any burst length [ 69.402235] stm32-dwmac 5800a000.ethernet eth0: No Safety Features support found [ 69.402306] stm32-dwmac 5800a000.ethernet eth0: configuring for phy/rgmii-id link mode [ 69.405656] usb usb2: root hub lost power or was reset [ 69.805154] usb 2-1: reset high-speed USB device number 2 using ehci-platform [ 69.883813] dwc2 49000000.usb-otg: resuming usb gadget configfs-gadget [ 70.189888] OOM killer enabled. [ 70.192983] Restarting tasks ... done. [ 70.215832] PM: suspend exit root@...32mp1-disco:~# [ 75.608337] stm32-dwmac 5800a000.ethernet eth0: Link is Up - 1Gbps/Full - flow control rx/tx And the same soft + patch “net: stmmac: Delete txtimer in suspend()" : [ 181.931229] dwc2 49000000.usb-otg: suspending usb gadget configfs-gadget [ 182.110153] stm32-dwmac 5800a000.ethernet eth0: Link is Down [ 182.112333] stm32-dwmac 5800a000.ethernet eth0: Link is Up - 1Gbps/Full - flow control rx/tx [ 182.112420] stm32-dwmac 5800a000.ethernet eth0: Link is Down [ 182.120247] Disabling non-boot CPUs ... [ 182.121186] CPU1 killed. [ 182.129095] Enabling non-boot CPUs ... [ 182.132309] CPU1 is up [ 182.151590] dwmac4: Master AXI performs any burst length [ 182.151626] stm32-dwmac 5800a000.ethernet eth0: No Safety Features support found [ 182.151695] stm32-dwmac 5800a000.ethernet eth0: configuring for phy/rgmii-id link mode [ 182.154930] usb usb2: root hub lost power or was reset [ 182.555119] usb 2-1: reset high-speed USB device number 2 using ehci-platform [ 182.633763] dwc2 49000000.usb-otg: resuming usb gadget configfs-gadget [ 182.953899] OOM killer enabled. [ 182.957008] Restarting tasks ... done. [ 182.996662] PM: suspend exit root@...32mp1-disco:~# [ 188.408297] stm32-dwmac 5800a000.ethernet eth0: Link is Up - 1Gbps/Full - flow control rx/tx I would like to understand why there is more : [ 182.110153] stm32-dwmac 5800a000.ethernet eth0: Link is Down [ 182.112333] stm32-dwmac 5800a000.ethernet eth0: Link is Up - 1Gbps/Full - flow control rx/tx [ 182.112420] stm32-dwmac 5800a000.ethernet eth0: Link is Down Any idea ? Regards. Christophe.
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