Re: [PATCH 10/10] fpga: fpga-mgr: altera-pr-ip: Simplify registration

Tom Rix
2020-10-04T18:47:38Z

On 10/3/20 10:14 PM, Moritz Fischer wrote:
> Simplify registration using new devm_fpga_mgr_register() API.
> Remove the now obsolete altera_pr_unregister() function.
>
> Signed-off-by: Moritz Fischer <mdf@kernel.org>
> ---
>
> We should take another look at this, IIRC correctly the point of
> splitting this up into a separate driver was to make it useable by a
> different (pci?) driver later on.
>
> It doesn't seem like this happened, and I think we should just make this
> a platform driver?
>
> ---
> drivers/fpga/altera-pr-ip-core-plat.c | 10 ----------
> drivers/fpga/altera-pr-ip-core.c | 14 +-------------
> include/linux/fpga/altera-pr-ip-core.h | 1 -
> 3 files changed, 1 insertion(+), 24 deletions(-)
>
> diff --git a/drivers/fpga/altera-pr-ip-core-plat.c b/drivers/fpga/altera-pr-ip-core-plat.c
> index 99b9cc0e70f0..b008a6b8d2d3 100644
> --- a/drivers/fpga/altera-pr-ip-core-plat.c
> +++ b/drivers/fpga/altera-pr-ip-core-plat.c
> @@ -28,15 +28,6 @@ static int alt_pr_platform_probe(struct platform_device *pdev)
> return alt_pr_register(dev, reg_base);
> }
>
> -static int alt_pr_platform_remove(struct platform_device *pdev)
> -{
> - struct device *dev = &pdev->dev;
> -
> - alt_pr_unregister(dev);
> -
> - return 0;
> -}
> -
> static const struct of_device_id alt_pr_of_match[] = {
> { .compatible = "altr,a10-pr-ip", },
> {},
> @@ -46,7 +37,6 @@ MODULE_DEVICE_TABLE(of, alt_pr_of_match);
>
> static struct platform_driver alt_pr_platform_driver = {
> .probe = alt_pr_platform_probe,
> - .remove = alt_pr_platform_remove,
> .driver = {
> .name = "alt_a10_pr_ip",
> .of_match_table = alt_pr_of_match,
> diff --git a/drivers/fpga/altera-pr-ip-core.c b/drivers/fpga/altera-pr-ip-core.c
> index 2cf25fd5e897..dfdf21ed34c4 100644
> --- a/drivers/fpga/altera-pr-ip-core.c
> +++ b/drivers/fpga/altera-pr-ip-core.c
> @@ -195,22 +195,10 @@ int alt_pr_register(struct device *dev, void __iomem *reg_base)
> if (!mgr)
> return -ENOMEM;
>
> - dev_set_drvdata(dev, mgr);
> -
> - return fpga_mgr_register(mgr);
> + return devm_fpga_mgr_register(dev, mgr);
> }
> EXPORT_SYMBOL_GPL(alt_pr_register);
>
> -void alt_pr_unregister(struct device *dev)
> -{
> - struct fpga_manager *mgr = dev_get_drvdata(dev);
> -
> - dev_dbg(dev, "%s\n", __func__);
> -
> - fpga_mgr_unregister(mgr);
> -}
> -EXPORT_SYMBOL_GPL(alt_pr_unregister);

Similar to the others, except for removing this symbol.

A patch should do one logical thing.

I'd rather this be split out of the patchset.

Tom

> -
> MODULE_AUTHOR("Matthew Gerlach <matthew.gerlach@linux.intel.com>");
> MODULE_DESCRIPTION("Altera Partial Reconfiguration IP Core");
> MODULE_LICENSE("GPL v2");
> diff --git a/include/linux/fpga/altera-pr-ip-core.h b/include/linux/fpga/altera-pr-ip-core.h
> index 0b08ac20ab16..a6b4c07858cc 100644
> --- a/include/linux/fpga/altera-pr-ip-core.h
> +++ b/include/linux/fpga/altera-pr-ip-core.h
> @@ -13,6 +13,5 @@
> #include <linux/io.h>
>
> int alt_pr_register(struct device *dev, void __iomem *reg_base);
> -void alt_pr_unregister(struct device *dev);
>
> #endif /* _ALT_PR_IP_CORE_H */