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

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Date:   Sat,  3 Oct 2020 22:14:23 -0700
From:   Moritz Fischer <mdf@...nel.org>
To:     linux-fpga@...r.kernel.org
Cc:     trix@...hat.com, hao.wu@...el.com, michal.simek@...inx.com,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        russell.h.weight@...el.com, matthew.gerlach@...el.com,
        Moritz Fischer <mdf@...nel.org>
Subject: [PATCH 10/10] fpga: fpga-mgr: altera-pr-ip: Simplify registration

Simplify registration using new devm_fpga_mgr_register() API.
Remove the now obsolete altera_pr_unregister() function.

Signed-off-by: Moritz Fischer <mdf@...nel.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);
-
 MODULE_AUTHOR("Matthew Gerlach <matthew.gerlach@...ux.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 */
-- 
2.28.0