linux-kernel - [PATCH 2/2] fpga: altera-cvp: register attribute groups using ops

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Date:   Tue, 22 Aug 2017 10:53:55 -0500
From:   Alan Tull <atull@...nel.org>
To:     Moritz Fischer <mdf@...nel.org>, Anatolij Gustschin <agust@...x.de>
Cc:     Alan Tull <atull@...nel.org>, linux-kernel@...r.kernel.org,
        linux-fpga@...r.kernel.org
Subject: [PATCH 2/2] fpga: altera-cvp: register attribute groups using ops

---
 drivers/fpga/altera-cvp.c | 39 +++++++++++++++++++--------------------
 1 file changed, 19 insertions(+), 20 deletions(-)

diff --git a/drivers/fpga/altera-cvp.c b/drivers/fpga/altera-cvp.c
index 08629ee..a498022 100644
--- a/drivers/fpga/altera-cvp.c
+++ b/drivers/fpga/altera-cvp.c
@@ -354,20 +354,14 @@ static int altera_cvp_write_complete(struct fpga_manager *mgr,
 	return ret;
 }
 
-static const struct fpga_manager_ops altera_cvp_ops = {
-	.state		= altera_cvp_state,
-	.write_init	= altera_cvp_write_init,
-	.write		= altera_cvp_write,
-	.write_complete	= altera_cvp_write_complete,
-};
-
-static ssize_t show_chkcfg(struct device_driver *dev, char *buf)
+static ssize_t show_chkcfg(struct device *dev,
+			   struct device_attribute *attr, char *buf)
 {
 	return snprintf(buf, 3, "%d\n", altera_cvp_chkcfg);
 }
 
-static ssize_t store_chkcfg(struct device_driver *drv, const char *buf,
-			    size_t count)
+static ssize_t store_chkcfg(struct device *dev, struct device_attribute *attr,
+			    const char *buf, size_t count)
 {
 	int ret;
 
@@ -378,7 +372,21 @@ static ssize_t store_chkcfg(struct device_driver *drv, const char *buf,
 	return count;
 }
 
-static DRIVER_ATTR(chkcfg, 0600, show_chkcfg, store_chkcfg);
+static DEVICE_ATTR(chkcfg, 0600, show_chkcfg, store_chkcfg);
+
+static struct attribute *altera_cvp_attrs[] = {
+	&dev_attr_chkcfg.attr,
+	NULL,
+};
+ATTRIBUTE_GROUPS(altera_cvp);
+
+static const struct fpga_manager_ops altera_cvp_ops = {
+	.state		= altera_cvp_state,
+	.write_init	= altera_cvp_write_init,
+	.write		= altera_cvp_write,
+	.write_complete	= altera_cvp_write_complete,
+	.groups		= altera_cvp_groups,
+};
 
 static int altera_cvp_probe(struct pci_dev *pdev,
 			    const struct pci_device_id *dev_id);
@@ -459,14 +467,6 @@ static int altera_cvp_probe(struct pci_dev *pdev,
 	if (ret)
 		goto err_unmap;
 
-	ret = driver_create_file(&altera_cvp_driver.driver,
-				 &driver_attr_chkcfg);
-	if (ret) {
-		dev_err(&pdev->dev, "Can't create sysfs chkcfg file\n");
-		fpga_mgr_unregister(&pdev->dev);
-		goto err_unmap;
-	}
-
 	return 0;
 
 err_unmap:
@@ -484,7 +484,6 @@ static void altera_cvp_remove(struct pci_dev *pdev)
 	struct altera_cvp_conf *conf = mgr->priv;
 	u16 cmd;
 
-	driver_remove_file(&altera_cvp_driver.driver, &driver_attr_chkcfg);
 	fpga_mgr_unregister(&pdev->dev);
 	pci_iounmap(pdev, conf->map);
 	pci_release_region(pdev, CVP_BAR);
-- 
2.7.4