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Commit f5b33d94 authored by Andy Shevchenko's avatar Andy Shevchenko
Browse files

platform/x86: intel_ips: Simplify error handling via devres API 



Use devm_ and pcim_ functions to make error handling
simpler and code smaller and tidier.

Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
parent 687d25a2

drivers/platform/x86/intel_ips.c

+15 −47
Original line number Diff line number Diff line
@@ -296,7 +296,7 @@ static struct ips_mcp_limits ips_ulv_limits = { 


struct ips_driver {

	struct pci_dev *dev;

	void *regmap;

	void __iomem *regmap;

	struct task_struct *monitor;

	struct task_struct *adjust;

	struct dentry *debug_root;
@@ -1517,62 +1517,45 @@ static int ips_probe(struct pci_dev *dev, const struct pci_device_id *id) 
	if (dmi_check_system(ips_blacklist))

		return -ENODEV;



	ips = kzalloc(sizeof(struct ips_driver), GFP_KERNEL);

	ips = devm_kzalloc(&dev->dev, sizeof(*ips), GFP_KERNEL);

	if (!ips)

		return -ENOMEM;



	pci_set_drvdata(dev, ips);

	spin_lock_init(&ips->turbo_status_lock);

	ips->dev = dev;



	ips->limits = ips_detect_cpu(ips);

	if (!ips->limits) {

		dev_info(&dev->dev, "IPS not supported on this CPU\n");

		ret = -ENXIO;

		goto error_free;

		return -ENXIO;

	}



	spin_lock_init(&ips->turbo_status_lock);



	ret = pci_enable_device(dev);

	ret = pcim_enable_device(dev);

	if (ret) {

		dev_err(&dev->dev, "can't enable PCI device, aborting\n");

		goto error_free;

	}



	if (!pci_resource_start(dev, 0)) {

		dev_err(&dev->dev, "TBAR not assigned, aborting\n");

		ret = -ENXIO;

		goto error_free;

		return ret;

	}



	ret = pci_request_regions(dev, "ips thermal sensor");

	ret = pcim_iomap_regions(dev, 1 << 0, pci_name(dev));

	if (ret) {

		dev_err(&dev->dev, "thermal resource busy, aborting\n");

		goto error_free;

	}





	ips->regmap = ioremap(pci_resource_start(dev, 0),

			      pci_resource_len(dev, 0));

	if (!ips->regmap) {

		dev_err(&dev->dev, "failed to map thermal regs, aborting\n");

		ret = -EBUSY;

		goto error_release;

		return ret;

	}

	ips->regmap = pcim_iomap_table(dev)[0];



	pci_set_drvdata(dev, ips);



	tse = thm_readb(THM_TSE);

	if (tse != TSE_EN) {

		dev_err(&dev->dev, "thermal device not enabled (0x%02x), aborting\n", tse);

		ret = -ENXIO;

		goto error_unmap;

		return -ENXIO;

	}



	trc = thm_readw(THM_TRC);

	trc_required_mask = TRC_CORE1_EN | TRC_CORE_PWR | TRC_MCH_EN;

	if ((trc & trc_required_mask) != trc_required_mask) {

		dev_err(&dev->dev, "thermal reporting for required devices not enabled, aborting\n");

		ret = -ENXIO;

		goto error_unmap;

		return -ENXIO;

	}



	if (trc & TRC_CORE2_EN)
@@ -1602,8 +1585,7 @@ static int ips_probe(struct pci_dev *dev, const struct pci_device_id *id) 
	rdmsrl(PLATFORM_INFO, platform_info);

	if (!(platform_info & PLATFORM_TDP)) {

		dev_err(&dev->dev, "platform indicates TDP override unavailable, aborting\n");

		ret = -ENODEV;

		goto error_unmap;

		return -ENODEV;

	}



	/*
@@ -1615,7 +1597,7 @@ static int ips_probe(struct pci_dev *dev, const struct pci_device_id *id) 
			  ips);

	if (ret) {

		dev_err(&dev->dev, "request irq failed, aborting\n");

		goto error_unmap;

		return ret;

	}



	/* Enable aux, hot & critical interrupts */
@@ -1673,12 +1655,6 @@ static int ips_probe(struct pci_dev *dev, const struct pci_device_id *id) 
	kthread_stop(ips->adjust);

error_free_irq:

	free_irq(ips->dev->irq, ips);

error_unmap:

	iounmap(ips->regmap);

error_release:

	pci_release_regions(dev);

error_free:

	kfree(ips);

	return ret;

}
@@ -1714,22 +1690,14 @@ static void ips_remove(struct pci_dev *dev) 
		kthread_stop(ips->adjust);

	if (ips->monitor)

		kthread_stop(ips->monitor);

	iounmap(ips->regmap);

	pci_release_regions(dev);

	kfree(ips);

	dev_dbg(&dev->dev, "IPS driver removed\n");

}



static void ips_shutdown(struct pci_dev *dev)

{

}



static struct pci_driver ips_pci_driver = {

	.name = "intel ips",

	.id_table = ips_id_table,

	.probe = ips_probe,

	.remove = ips_remove,

	.shutdown = ips_shutdown,

};



module_pci_driver(ips_pci_driver);