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mtd: denali_pci: refactor driver using devres API

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In recent kernels we have a lot of helper functions, including
devres API, to make life of device driver developer easy.

Convert the driver using devm_kzalloc() and pcim_enable_device().

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
This commit is contained in:
Andy Shevchenko 2015-08-06 16:04:23 +03:00 committed by Brian Norris
parent 2445d33d85
commit add243d5bc
1 changed files with 6 additions and 17 deletions
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23
drivers/mtd/nand/denali_pci.c
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@ -30,19 +30,19 @@ MODULE_DEVICE_TABLE(pci, denali_pci_ids);
static int denali_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) static int denali_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
{ {
int ret = -ENODEV; int ret;
resource_size_t csr_base, mem_base; resource_size_t csr_base, mem_base;
unsigned long csr_len, mem_len; unsigned long csr_len, mem_len;
struct denali_nand_info *denali; struct denali_nand_info *denali;
denali = kzalloc(sizeof(*denali), GFP_KERNEL); denali = devm_kzalloc(&dev->dev, sizeof(*denali), GFP_KERNEL);
if (!denali) if (!denali)
return -ENOMEM; return -ENOMEM;
ret = pci_enable_device(dev); ret = pcim_enable_device(dev);
if (ret) { if (ret) {
pr_err("Spectra: pci_enable_device failed.\n"); pr_err("Spectra: pci_enable_device failed.\n");
goto failed_alloc_memery; return ret;
} }
if (id->driver_data == INTEL_CE4100) { if (id->driver_data == INTEL_CE4100) {
@ -70,14 +70,13 @@ static int denali_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
ret = pci_request_regions(dev, DENALI_NAND_NAME); ret = pci_request_regions(dev, DENALI_NAND_NAME);
if (ret) { if (ret) {
pr_err("Spectra: Unable to request memory regions\n"); pr_err("Spectra: Unable to request memory regions\n");
goto failed_enable_dev; return ret;
} }
denali->flash_reg = ioremap_nocache(csr_base, csr_len); denali->flash_reg = ioremap_nocache(csr_base, csr_len);
if (!denali->flash_reg) { if (!denali->flash_reg) {
pr_err("Spectra: Unable to remap memory region\n"); pr_err("Spectra: Unable to remap memory region\n");
ret = -ENOMEM; return -ENOMEM;
goto failed_req_regions;
} }
denali->flash_mem = ioremap_nocache(mem_base, mem_len); denali->flash_mem = ioremap_nocache(mem_base, mem_len);
@ -99,13 +98,6 @@ static int denali_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
iounmap(denali->flash_mem); iounmap(denali->flash_mem);
failed_remap_reg: failed_remap_reg:
iounmap(denali->flash_reg); iounmap(denali->flash_reg);
failed_req_regions:
pci_release_regions(dev);
failed_enable_dev:
pci_disable_device(dev);
failed_alloc_memery:
kfree(denali);
return ret; return ret;
} }
@ -117,9 +109,6 @@ static void denali_pci_remove(struct pci_dev *dev)
denali_remove(denali); denali_remove(denali);
iounmap(denali->flash_reg); iounmap(denali->flash_reg);
iounmap(denali->flash_mem); iounmap(denali->flash_mem);
pci_release_regions(dev);
pci_disable_device(dev);
kfree(denali);
} }
static struct pci_driver denali_pci_driver = { static struct pci_driver denali_pci_driver = {