linux-kernel - [PATCH -next] PCI: tegra: convert to use DEFINE_SEQ

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Date:   Wed, 16 Sep 2020 10:50:25 +0800
From:   Liu Shixin <liushixin2@...wei.com>
To:     Thierry Reding <thierry.reding@...il.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Rob Herring <robh@...nel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Jonathan Hunter <jonathanh@...dia.com>
CC:     <linux-tegra@...r.kernel.org>, <linux-pci@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, Liu Shixin <liushixin2@...wei.com>
Subject: [PATCH -next] PCI: tegra: convert to use DEFINE_SEQ_ATTRIBUTE macro

Use DEFINE_SEQ_ATTRIBUTE macro to simplify the code.

Signed-off-by: Liu Shixin <liushixin2@...wei.com>
---
 drivers/pci/controller/pci-tegra.c | 28 +++-------------------------
 1 file changed, 3 insertions(+), 25 deletions(-)

diff --git a/drivers/pci/controller/pci-tegra.c b/drivers/pci/controller/pci-tegra.c
index c1d34353c29b..556c30a718f0 100644
--- a/drivers/pci/controller/pci-tegra.c
+++ b/drivers/pci/controller/pci-tegra.c
@@ -2564,36 +2564,14 @@ static int tegra_pcie_ports_seq_show(struct seq_file *s, void *v)
 	return 0;
 }
 
-static const struct seq_operations tegra_pcie_ports_seq_ops = {
+static const struct seq_operations tegra_pcie_ports_sops = {
 	.start = tegra_pcie_ports_seq_start,
 	.next = tegra_pcie_ports_seq_next,
 	.stop = tegra_pcie_ports_seq_stop,
 	.show = tegra_pcie_ports_seq_show,
 };
 
-static int tegra_pcie_ports_open(struct inode *inode, struct file *file)
-{
-	struct tegra_pcie *pcie = inode->i_private;
-	struct seq_file *s;
-	int err;
-
-	err = seq_open(file, &tegra_pcie_ports_seq_ops);
-	if (err)
-		return err;
-
-	s = file->private_data;
-	s->private = pcie;
-
-	return 0;
-}
-
-static const struct file_operations tegra_pcie_ports_ops = {
-	.owner = THIS_MODULE,
-	.open = tegra_pcie_ports_open,
-	.read = seq_read,
-	.llseek = seq_lseek,
-	.release = seq_release,
-};
+DEFINE_SEQ_ATTRIBUTE(tegra_pcie_ports);
 
 static void tegra_pcie_debugfs_exit(struct tegra_pcie *pcie)
 {
@@ -2610,7 +2588,7 @@ static int tegra_pcie_debugfs_init(struct tegra_pcie *pcie)
 		return -ENOMEM;
 
 	file = debugfs_create_file("ports", S_IFREG | S_IRUGO, pcie->debugfs,
-				   pcie, &tegra_pcie_ports_ops);
+				   pcie, &tegra_pcie_ports_fops);
 	if (!file)
 		goto remove;
 
-- 
2.25.1