On Fri, Nov 19, 2021 at 10:53:53AM +0800, Meng Li wrote:
> From: Meng Li <meng.li@xxxxxxxxxxxxx>
>
> In stable kernel v5.10, when run below command to remove ethernet driver on
> stratix10 platform, there will be warning trace as below:
>
> $ cd /sys/class/net/eth0/device/driver/
> $ echo ff800000.ethernet > unbind
>
> WARNING: CPU: 3 PID: 386 at drivers/clk/clk.c:810 clk_core_unprepare+0x114/0x274
> Modules linked in: sch_fq_codel
> CPU: 3 PID: 386 Comm: sh Tainted: G W 5.10.74-yocto-standard #1
> Hardware name: SoCFPGA Stratix 10 SoCDK (DT)
> pstate: 00000005 (nzcv daif -PAN -UAO -TCO BTYPE=--)
> pc : clk_core_unprepare+0x114/0x274
> lr : clk_core_unprepare+0x114/0x274
> sp : ffff800011bdbb10
> clk_core_unprepare+0x114/0x274
> clk_unprepare+0x38/0x50
> stmmac_remove_config_dt+0x40/0x80
> stmmac_pltfr_remove+0x64/0x80
> platform_drv_remove+0x38/0x60
> ... ..
> el0_sync_handler+0x1a4/0x1b0
> el0_sync+0x180/0x1c0
> This issue is introduced by introducing upstream commit 8f269102baf7
> ("net: stmmac: disable clocks in stmmac_remove_config_dt()")
>
> But in latest mainline kernel, there is no this issue. Because commit
> 5ec55823438e("net: stmmac: add clocks management for gmac driver") and its
> folowing fixing commits improved clocks management for stmmac driver.
> Therefore, backport them to stable kernel v5.10.
>
All now queued up, thanks.
greg k-h
