Messages in this thread | | | Date | Wed, 23 Jun 2021 14:20:40 +0200 | From | Krzysztof Wilczyński <> | Subject | Re: [PATCH] PCI: xilinx-nwl: Enable the clock through CCF |
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Hi Michal,
Thank you for sending the patch over!
> Simply enable clocks. There is no remove function that's why > this should be enough for simple operation.
What clock is this? Would it be worth mentioning what it is for a reference (and for posterity) the commit message?
Also why it would need to be enabled and wasn't before? Would this be a fix for some problem? Would this warrant a "Fixes:" tag? And would it need to be back-ported to stable kernels?
[...] > @@ -823,6 +825,11 @@ static int nwl_pcie_probe(struct platform_device *pdev) > return err; > } > > + pcie->clk = devm_clk_get(dev, NULL); > + if (IS_ERR(pcie->clk)) > + return PTR_ERR(pcie->clk); > + clk_prepare_enable(pcie->clk); > + [...]
Almost every other user of clk_prepare_enable() would check for potential failure, print an appropriate message, and then do the necessary clean-up before bailing out and returning an error.
Would adding an error check for clk_prepare_enable() and printing an error message using dev_err() be too much in this case? If not, then I would rather follow the pattern that other users established and handle errors as needed. What do you think?
Krzysztof
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