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authorAmitoj Kaur Chawla <amitoj1606@gmail.com>2016-02-27 22:34:16 +0530
committerDavid S. Miller <davem@davemloft.net>2016-03-02 13:43:03 -0500
commit7cb43bebab52d8a9aa5943fbd1babe633a255e2c (patch)
tree8505f9c1aa22ac79376877fd5f5378b10f48847b /drivers/net/wan
parent7da5ee09f1fcd9c4fa95be96d3981b117c59a26b (diff)
downloadop-kernel-dev-7cb43bebab52d8a9aa5943fbd1babe633a255e2c.zip
op-kernel-dev-7cb43bebab52d8a9aa5943fbd1babe633a255e2c.tar.gz
wan: lmc: Switch to using managed resources
Use managed resource functions devm_kzalloc and pcim_enable_device to simplify error handling. Subsequently, remove unnecessary kfree, pci_disable_device and pci_release_regions. To be compatible with the change, various gotos are replaced with direct returns and unneeded labels are dropped. Also, `sc` was only being freed in the probe function and not the remove function before the change. By using devm_kzalloc this patch also fixes this memory leak. Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/wan')
-rw-r--r--drivers/net/wan/lmc/lmc_main.c27
1 files changed, 7 insertions, 20 deletions
diff --git a/drivers/net/wan/lmc/lmc_main.c b/drivers/net/wan/lmc/lmc_main.c
index 317bc79..bb33b24 100644
--- a/drivers/net/wan/lmc/lmc_main.c
+++ b/drivers/net/wan/lmc/lmc_main.c
@@ -826,7 +826,7 @@ static int lmc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
/* lmc_trace(dev, "lmc_init_one in"); */
- err = pci_enable_device(pdev);
+ err = pcim_enable_device(pdev);
if (err) {
printk(KERN_ERR "lmc: pci enable failed: %d\n", err);
return err;
@@ -835,23 +835,20 @@ static int lmc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
err = pci_request_regions(pdev, "lmc");
if (err) {
printk(KERN_ERR "lmc: pci_request_region failed\n");
- goto err_req_io;
+ return err;
}
/*
* Allocate our own device structure
*/
- sc = kzalloc(sizeof(lmc_softc_t), GFP_KERNEL);
- if (!sc) {
- err = -ENOMEM;
- goto err_kzalloc;
- }
+ sc = devm_kzalloc(&pdev->dev, sizeof(lmc_softc_t), GFP_KERNEL);
+ if (!sc)
+ return -ENOMEM;
dev = alloc_hdlcdev(sc);
if (!dev) {
printk(KERN_ERR "lmc:alloc_netdev for device failed\n");
- err = -ENOMEM;
- goto err_hdlcdev;
+ return -ENOMEM;
}
@@ -888,7 +885,7 @@ static int lmc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
if (err) {
printk(KERN_ERR "%s: register_netdev failed.\n", dev->name);
free_netdev(dev);
- goto err_hdlcdev;
+ return err;
}
sc->lmc_cardtype = LMC_CARDTYPE_UNKNOWN;
@@ -971,14 +968,6 @@ static int lmc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
lmc_trace(dev, "lmc_init_one out");
return 0;
-
-err_hdlcdev:
- kfree(sc);
-err_kzalloc:
- pci_release_regions(pdev);
-err_req_io:
- pci_disable_device(pdev);
- return err;
}
/*
@@ -992,8 +981,6 @@ static void lmc_remove_one(struct pci_dev *pdev)
printk(KERN_DEBUG "%s: removing...\n", dev->name);
unregister_hdlc_device(dev);
free_netdev(dev);
- pci_release_regions(pdev);
- pci_disable_device(pdev);
}
}
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