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usb: isp1760: Don't expose hcd to glue code from isp1760_register 

The glue code probe functions don't need to access the hcd structure
anymore. Modify isp1760_register to return an integer error code instead
of the hcd pointer.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Laurent Pinchart 2015-01-21 00:55:47 +02:00 committed by Felipe Balbi
parent 57f068bedc
commit f0bdbb0ec6
3 changed files with 19 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/usb/host/isp1760-hcd.c
View File

@ -60,6 +60,9 @@ struct isp1760_hcd {
struct gpio_desc *rst_gpio;
};
typedef void (packet_enqueue)(struct usb_hcd *hcd, struct isp1760_qh *qh,
struct isp1760_qtd *qtd);
static inline struct isp1760_hcd *hcd_to_priv(struct usb_hcd *hcd)
{
return (struct isp1760_hcd *) (hcd->hcd_priv);
@ -2208,24 +2211,23 @@ void deinit_kmem_cache(void)
kmem_cache_destroy(urb_listitem_cachep);
}
struct usb_hcd *isp1760_register(phys_addr_t res_start, resource_size_t res_len,
int irq, unsigned long irqflags,
struct device *dev, const char *busname,
unsigned int devflags)
int isp1760_register(phys_addr_t res_start, resource_size_t res_len, int irq,
unsigned long irqflags, struct device *dev,
const char *busname, unsigned int devflags)
{
struct usb_hcd *hcd;
struct isp1760_hcd *priv;
int ret;
if (usb_disabled())
return ERR_PTR(-ENODEV);
return -ENODEV;
/* prevent usb-core allocating DMA pages */
dev->dma_mask = NULL;
hcd = usb_create_hcd(&isp1760_hc_driver, dev, dev_name(dev));
if (!hcd)
return ERR_PTR(-ENOMEM);
return -ENOMEM;
priv = hcd_to_priv(hcd);
priv->devflags = devflags;
@ -2254,7 +2256,7 @@ struct usb_hcd *isp1760_register(phys_addr_t res_start, resource_size_t res_len,
dev_set_drvdata(dev, hcd);
return hcd;
return 0;
err_unmap:
iounmap(hcd->regs);
@ -2262,7 +2264,7 @@ struct usb_hcd *isp1760_register(phys_addr_t res_start, resource_size_t res_len,
err_put:
usb_put_hcd(hcd);
return ERR_PTR(ret);
return ret;
}
void isp1760_unregister(struct device *dev)

10
drivers/usb/host/isp1760-hcd.h
View File

@ -2,10 +2,9 @@
#define _ISP1760_HCD_H_
/* exports for if */
struct usb_hcd *isp1760_register(phys_addr_t res_start, resource_size_t res_len,
int irq, unsigned long irqflags,
struct device *dev, const char *busname,
unsigned int devflags);
int isp1760_register(phys_addr_t res_start, resource_size_t res_len, int irq,
unsigned long irqflags, struct device *dev,
const char *busname, unsigned int devflags);
void isp1760_unregister(struct device *dev);
int init_kmem_once(void);
@ -112,9 +111,6 @@ struct slotinfo {
};
typedef void (packet_enqueue)(struct usb_hcd *hcd, struct isp1760_qh *qh,
struct isp1760_qtd *qtd);
/*
* Device flags that can vary from board to board. All of these
* indicate the most "atypical" case, so that a devflags of 0 is

19
drivers/usb/host/isp1760-if.c
View File

@ -31,7 +31,6 @@ static int isp1761_pci_probe(struct pci_dev *dev,
u8 latency, limit;
__u32 reg_data;
int retry_count;
struct usb_hcd *hcd;
unsigned int devflags = 0;
int ret_status = 0;
@ -134,13 +133,11 @@ static int isp1761_pci_probe(struct pci_dev *dev,
writel(reg_data, iobase + PLX_INT_CSR_REG);
dev->dev.dma_mask = NULL;
hcd = isp1760_register(pci_mem_phy0, memlength, dev->irq,
IRQF_SHARED, &dev->dev, dev_name(&dev->dev),
devflags);
if (IS_ERR(hcd)) {
ret_status = -ENODEV;
ret_status = isp1760_register(pci_mem_phy0, memlength, dev->irq,
IRQF_SHARED, &dev->dev,
dev_name(&dev->dev), devflags);
if (ret_status < 0)
goto cleanup3;
}
/* done with PLX IO access */
iounmap(iobase);
@ -198,7 +195,6 @@ static int isp1760_plat_probe(struct platform_device *pdev)
struct resource *mem_res;
struct resource *irq_res;
resource_size_t mem_size;
struct usb_hcd *hcd;
int ret;
mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@ -262,14 +258,11 @@ static int isp1760_plat_probe(struct platform_device *pdev)
devflags |= ISP1760_FLAG_DREQ_POL_HIGH;
}
hcd = isp1760_register(mem_res->start, mem_size, irq_res->start,
ret = isp1760_register(mem_res->start, mem_size, irq_res->start,
irqflags, &pdev->dev, dev_name(&pdev->dev),
devflags);
if (IS_ERR(hcd)) {
pr_warning("isp1760: Failed to register the HCD device\n");
ret = PTR_ERR(hcd);
if (ret < 0)
goto cleanup;
}
pr_info("ISP1760 USB device initialised\n");
return 0;