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[net-next,00/12] net: Convert using devm_clk_get_enabled()/devm_clk_get_optional_enabled()

Message ID 20240831021334.1907921-1-lizetao1@huawei.com (mailing list archive)
Headers show
Series net: Convert using devm_clk_get_enabled()/devm_clk_get_optional_enabled() | expand

Message

Li Zetao Aug. 31, 2024, 2:13 a.m. UTC
There are many examples[1][2] of clk resource leakage in LTS. The
reason is that developers need to maintain the allocation and release
of clk resources themselves, but this will increase the burden on
developers. Using the API related to devm_clk_get_*_enable ensures
that the life cycle of clk is consistent with that of the device,
reducing the risk of unreleased resources like clk.

Several other developers are also working on converting to more
secure interfaces, and this patch set is in principle the same as
theirs.

[1]: https://lore.kernel.org/all/20240812160128.338041191@linuxfoundation.org/
[2]: https://lore.kernel.org/all/20240812160135.992451065@linuxfoundation.org/

Li Zetao (12):
  net: dsa: bcm_sf2: Convert using devm_clk_get_optional_enabled() in
    bcm_sf2_sw_probe()
  net: ethernet: Convert using devm_clk_get_enabled() in emac_probe()
  net: ethernet: arc: Convert using devm_clk_get_enabled() in
    emac_probe()
  net: ethernet: ethoc: Convert using devm_clk_get_enabled() in
    ethoc_probe()
  net: ftgmac100: Convert using devm_clk_get_enabled() in
    ftgmac100_setup_clk()
  net: ethernet: hisilicon: Convert using devm_clk_get_enabled() in
    hisi_femac_drv_probe()
  net: lantiq_xrx200: Convert using devm_clk_get_enabled() in
    xrx200_probe()
  net: stmmac: dwmac-dwc-qos-eth: Convert using devm_clk_get_enabled()
    in dwc_qos_probe()
  net: ethernet: sunplus: Convert using devm_clk_get_enabled() in
    spl2sw_probe()
  net: xilinx: axienet: Convert using devm_clk_get_optional_enabled() in
    axienet_probe()
  wifi: wilc1000: Convert using devm_clk_get_optional_enabled() in
    wilc_sdio_probe()
  wifi: wilc1000: Convert using devm_clk_get_optional_enabled() in
    wilc_bus_probe()

 drivers/net/dsa/bcm_sf2.c                     | 28 ++----
 drivers/net/ethernet/allwinner/sun4i-emac.c   | 13 +--
 drivers/net/ethernet/arc/emac_rockchip.c      | 34 ++-----
 drivers/net/ethernet/ethoc.c                  | 18 ++--
 drivers/net/ethernet/faraday/ftgmac100.c      | 27 ++---
 drivers/net/ethernet/hisilicon/hisi_femac.c   | 17 +---
 drivers/net/ethernet/lantiq_xrx200.c          | 17 +---
 .../stmicro/stmmac/dwmac-dwc-qos-eth.c        | 98 ++++---------------
 drivers/net/ethernet/sunplus/spl2sw_driver.c  | 18 +---
 .../net/ethernet/xilinx/xilinx_axienet_main.c | 15 +--
 .../net/wireless/microchip/wilc1000/sdio.c    | 10 +-
 drivers/net/wireless/microchip/wilc1000/spi.c |  5 +-
 12 files changed, 64 insertions(+), 236 deletions(-)

Comments

Jeff Johnson Sept. 6, 2024, 11:17 p.m. UTC | #1
On 8/30/2024 7:13 PM, Li Zetao wrote:
> There are many examples[1][2] of clk resource leakage in LTS. The
> reason is that developers need to maintain the allocation and release
> of clk resources themselves, but this will increase the burden on
> developers. Using the API related to devm_clk_get_*_enable ensures
> that the life cycle of clk is consistent with that of the device,
> reducing the risk of unreleased resources like clk.
> 
> Several other developers are also working on converting to more
> secure interfaces, and this patch set is in principle the same as
> theirs.

...

>  drivers/net/dsa/bcm_sf2.c                     | 28 ++----
>  drivers/net/ethernet/allwinner/sun4i-emac.c   | 13 +--
>  drivers/net/ethernet/arc/emac_rockchip.c      | 34 ++-----
>  drivers/net/ethernet/ethoc.c                  | 18 ++--
>  drivers/net/ethernet/faraday/ftgmac100.c      | 27 ++---
>  drivers/net/ethernet/hisilicon/hisi_femac.c   | 17 +---
>  drivers/net/ethernet/lantiq_xrx200.c          | 17 +---
>  .../stmicro/stmmac/dwmac-dwc-qos-eth.c        | 98 ++++---------------
>  drivers/net/ethernet/sunplus/spl2sw_driver.c  | 18 +---
>  .../net/ethernet/xilinx/xilinx_axienet_main.c | 15 +--
>  .../net/wireless/microchip/wilc1000/sdio.c    | 10 +-
>  drivers/net/wireless/microchip/wilc1000/spi.c |  5 +-

note the wifi driver changes go through the wireless tree and not the net tree
so those should be split out separately
Li Zetao Sept. 7, 2024, 2:55 a.m. UTC | #2
Hi,

在 2024/9/7 7:17, Jeff Johnson 写道:
> On 8/30/2024 7:13 PM, Li Zetao wrote:
>> There are many examples[1][2] of clk resource leakage in LTS. The
>> reason is that developers need to maintain the allocation and release
>> of clk resources themselves, but this will increase the burden on
>> developers. Using the API related to devm_clk_get_*_enable ensures
>> that the life cycle of clk is consistent with that of the device,
>> reducing the risk of unreleased resources like clk.
>>
>> Several other developers are also working on converting to more
>> secure interfaces, and this patch set is in principle the same as
>> theirs.
> 
> ...
> 
>>   drivers/net/dsa/bcm_sf2.c                     | 28 ++----
>>   drivers/net/ethernet/allwinner/sun4i-emac.c   | 13 +--
>>   drivers/net/ethernet/arc/emac_rockchip.c      | 34 ++-----
>>   drivers/net/ethernet/ethoc.c                  | 18 ++--
>>   drivers/net/ethernet/faraday/ftgmac100.c      | 27 ++---
>>   drivers/net/ethernet/hisilicon/hisi_femac.c   | 17 +---
>>   drivers/net/ethernet/lantiq_xrx200.c          | 17 +---
>>   .../stmicro/stmmac/dwmac-dwc-qos-eth.c        | 98 ++++---------------
>>   drivers/net/ethernet/sunplus/spl2sw_driver.c  | 18 +---
>>   .../net/ethernet/xilinx/xilinx_axienet_main.c | 15 +--
>>   .../net/wireless/microchip/wilc1000/sdio.c    | 10 +-
>>   drivers/net/wireless/microchip/wilc1000/spi.c |  5 +-
> 
> note the wifi driver changes go through the wireless tree and not the net tree
> so those should be split out separately

I have separated the wifi related patches and sent them to the community:
https://lore.kernel.org/all/20240903110205.4127706-1-lizetao1@huawei.com/
> 
> 
Thanks,
Li Zetao.