[PATCH v2 09/11] i2c: pasemi: Refactor _probe to use devm_*

[Sven Peter]

Using managed device resources means there's nothing left to be done in
pasemi_smb_pci_remove and also allows to remove base and size from
struct pasemi_smbus.

Reviewed-by: Arnd Bergmann <a...@arndb.de>
Signed-off-by: Sven Peter <s...@svenpeter.dev>
---
v1 -> v2: no changes

 drivers/i2c/busses/i2c-pasemi-core.c |  8 ++---
 drivers/i2c/busses/i2c-pasemi-core.h |  2 --
 drivers/i2c/busses/i2c-pasemi-pci.c  | 45 ++++++++--------------------
 3 files changed, 15 insertions(+), 40 deletions(-)

diff --git a/drivers/i2c/busses/i2c-pasemi-core.c 
b/drivers/i2c/busses/i2c-pasemi-core.c
index 9fb8fac53f2b..3d87b64dd9f7 100644
--- a/drivers/i2c/busses/i2c-pasemi-core.c
+++ b/drivers/i2c/busses/i2c-pasemi-core.c
@@ -41,8 +41,7 @@
 
 static inline void reg_write(struct pasemi_smbus *smbus, int reg, int val)
 {
-       dev_dbg(smbus->dev, "smbus write reg %lx val %08x\n",
-               smbus->base + reg, val);
+       dev_dbg(smbus->dev, "smbus write reg %x val %08x\n", reg, val);
        iowrite32(val, smbus->ioaddr + reg);
 }
 
@@ -50,8 +49,7 @@ static inline int reg_read(struct pasemi_smbus *smbus, int 
reg)
 {
        int ret;
        ret = ioread32(smbus->ioaddr + reg);
-       dev_dbg(smbus->dev, "smbus read reg %lx val %08x\n",
-               smbus->base + reg, ret);
+       dev_dbg(smbus->dev, "smbus read reg %x val %08x\n", reg, ret);
        return ret;
 }
 
@@ -339,7 +337,7 @@ int pasemi_i2c_common_probe(struct pasemi_smbus *smbus)
 
        pasemi_reset(smbus);
 
-       error = i2c_add_adapter(&smbus->adapter);
+       error = devm_i2c_add_adapter(smbus->dev, &smbus->adapter);
        if (error)
                return error;
 
diff --git a/drivers/i2c/busses/i2c-pasemi-core.h 
b/drivers/i2c/busses/i2c-pasemi-core.h
index 30a7990825ef..aca4e2da9089 100644
--- a/drivers/i2c/busses/i2c-pasemi-core.h
+++ b/drivers/i2c/busses/i2c-pasemi-core.h
@@ -12,8 +12,6 @@ struct pasemi_smbus {
        struct device           *dev;
        struct i2c_adapter       adapter;
        void __iomem            *ioaddr;
-       unsigned long            base;
-       int                      size;
        unsigned int             clk_div;
 };
 
diff --git a/drivers/i2c/busses/i2c-pasemi-pci.c 
b/drivers/i2c/busses/i2c-pasemi-pci.c
index 96585bbf8c24..4251e7b9f177 100644
--- a/drivers/i2c/busses/i2c-pasemi-pci.c
+++ b/drivers/i2c/busses/i2c-pasemi-pci.c
@@ -26,57 +26,37 @@ static int pasemi_smb_pci_probe(struct pci_dev *dev,
                                      const struct pci_device_id *id)
 {
        struct pasemi_smbus *smbus;
+       unsigned long base;
+       int size;
        int error;
 
        if (!(pci_resource_flags(dev, 0) & IORESOURCE_IO))
                return -ENODEV;
 
-       smbus = kzalloc(sizeof(struct pasemi_smbus), GFP_KERNEL);
+       smbus = devm_kzalloc(&dev->dev, sizeof(*smbus), GFP_KERNEL);
        if (!smbus)
                return -ENOMEM;
 
        smbus->dev = &dev->dev;
-       smbus->base = pci_resource_start(dev, 0);
-       smbus->size = pci_resource_len(dev, 0);
+       base = pci_resource_start(dev, 0);
+       size = pci_resource_len(dev, 0);
        smbus->clk_div = CLK_100K_DIV;
 
-       if (!request_region(smbus->base, smbus->size,
-                           pasemi_smb_pci_driver.name)) {
-               error = -EBUSY;
-               goto out_kfree;
-       }
+       if (!devm_request_region(&dev->dev, base, size,
+                           pasemi_smb_pci_driver.name))
+               return -EBUSY;
 
-       smbus->ioaddr = pci_iomap(dev, 0, 0);
-       if (!smbus->ioaddr) {
-               error = -EBUSY;
-               goto out_release_region;
-       }
+       smbus->ioaddr = pcim_iomap(dev, 0, 0);
+       if (!smbus->ioaddr)
+               return -EBUSY;
 
        error = pasemi_i2c_common_probe(smbus);
        if (error)
-               goto out_ioport_unmap;
+               return error;
 
        pci_set_drvdata(dev, smbus);
 
        return 0;
-
- out_ioport_unmap:
-       pci_iounmap(dev, smbus->ioaddr);
- out_release_region:
-       release_region(smbus->base, smbus->size);
- out_kfree:
-       kfree(smbus);
-       return error;
-}
-
-static void pasemi_smb_pci_remove(struct pci_dev *dev)
-{
-       struct pasemi_smbus *smbus = pci_get_drvdata(dev);
-
-       i2c_del_adapter(&smbus->adapter);
-       pci_iounmap(dev, smbus->ioaddr);
-       release_region(smbus->base, smbus->size);
-       kfree(smbus);
 }
 
 static const struct pci_device_id pasemi_smb_pci_ids[] = {
@@ -90,7 +70,6 @@ static struct pci_driver pasemi_smb_pci_driver = {
        .name           = "i2c-pasemi",
        .id_table       = pasemi_smb_pci_ids,
        .probe          = pasemi_smb_pci_probe,
-       .remove         = pasemi_smb_pci_remove,
 };
 
 module_pci_driver(pasemi_smb_pci_driver);
-- 
2.25.1