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path: root/drivers/usb/core/hcd.c
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Diffstat (limited to 'drivers/usb/core/hcd.c')
-rw-r--r--drivers/usb/core/hcd.c82
1 files changed, 46 insertions, 36 deletions
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 79bdca5cb9c7..49550790a3cb 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -1076,6 +1076,7 @@ static void usb_deregister_bus (struct usb_bus *bus)
static int register_root_hub(struct usb_hcd *hcd)
{
struct device *parent_dev = hcd->self.controller;
+ struct device *sysdev = hcd->self.sysdev;
struct usb_device *usb_dev = hcd->self.root_hub;
const int devnum = 1;
int retval;
@@ -1122,7 +1123,7 @@ static int register_root_hub(struct usb_hcd *hcd)
/* Did the HC die before the root hub was registered? */
if (HCD_DEAD(hcd))
usb_hc_died (hcd); /* This time clean up */
- usb_dev->dev.of_node = parent_dev->of_node;
+ usb_dev->dev.of_node = sysdev->of_node;
}
mutex_unlock(&usb_bus_idr_lock);
@@ -1435,7 +1436,7 @@ void usb_hcd_unmap_urb_setup_for_dma(struct usb_hcd *hcd, struct urb *urb)
{
if (IS_ENABLED(CONFIG_HAS_DMA) &&
(urb->transfer_flags & URB_SETUP_MAP_SINGLE))
- dma_unmap_single(hcd->self.controller,
+ dma_unmap_single(hcd->self.sysdev,
urb->setup_dma,
sizeof(struct usb_ctrlrequest),
DMA_TO_DEVICE);
@@ -1468,19 +1469,19 @@ void usb_hcd_unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb)
dir = usb_urb_dir_in(urb) ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
if (IS_ENABLED(CONFIG_HAS_DMA) &&
(urb->transfer_flags & URB_DMA_MAP_SG))
- dma_unmap_sg(hcd->self.controller,
+ dma_unmap_sg(hcd->self.sysdev,
urb->sg,
urb->num_sgs,
dir);
else if (IS_ENABLED(CONFIG_HAS_DMA) &&
(urb->transfer_flags & URB_DMA_MAP_PAGE))
- dma_unmap_page(hcd->self.controller,
+ dma_unmap_page(hcd->self.sysdev,
urb->transfer_dma,
urb->transfer_buffer_length,
dir);
else if (IS_ENABLED(CONFIG_HAS_DMA) &&
(urb->transfer_flags & URB_DMA_MAP_SINGLE))
- dma_unmap_single(hcd->self.controller,
+ dma_unmap_single(hcd->self.sysdev,
urb->transfer_dma,
urb->transfer_buffer_length,
dir);
@@ -1523,11 +1524,11 @@ int usb_hcd_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb,
return ret;
if (IS_ENABLED(CONFIG_HAS_DMA) && hcd->self.uses_dma) {
urb->setup_dma = dma_map_single(
- hcd->self.controller,
+ hcd->self.sysdev,
urb->setup_packet,
sizeof(struct usb_ctrlrequest),
DMA_TO_DEVICE);
- if (dma_mapping_error(hcd->self.controller,
+ if (dma_mapping_error(hcd->self.sysdev,
urb->setup_dma))
return -EAGAIN;
urb->transfer_flags |= URB_SETUP_MAP_SINGLE;
@@ -1558,7 +1559,7 @@ int usb_hcd_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb,
}
n = dma_map_sg(
- hcd->self.controller,
+ hcd->self.sysdev,
urb->sg,
urb->num_sgs,
dir);
@@ -1573,12 +1574,12 @@ int usb_hcd_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb,
} else if (urb->sg) {
struct scatterlist *sg = urb->sg;
urb->transfer_dma = dma_map_page(
- hcd->self.controller,
+ hcd->self.sysdev,
sg_page(sg),
sg->offset,
urb->transfer_buffer_length,
dir);
- if (dma_mapping_error(hcd->self.controller,
+ if (dma_mapping_error(hcd->self.sysdev,
urb->transfer_dma))
ret = -EAGAIN;
else
@@ -1588,11 +1589,11 @@ int usb_hcd_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb,
ret = -EAGAIN;
} else {
urb->transfer_dma = dma_map_single(
- hcd->self.controller,
+ hcd->self.sysdev,
urb->transfer_buffer,
urb->transfer_buffer_length,
dir);
- if (dma_mapping_error(hcd->self.controller,
+ if (dma_mapping_error(hcd->self.sysdev,
urb->transfer_dma))
ret = -EAGAIN;
else
@@ -2498,24 +2499,8 @@ static void init_giveback_urb_bh(struct giveback_urb_bh *bh)
tasklet_init(&bh->bh, usb_giveback_urb_bh, (unsigned long)bh);
}
-/**
- * usb_create_shared_hcd - create and initialize an HCD structure
- * @driver: HC driver that will use this hcd
- * @dev: device for this HC, stored in hcd->self.controller
- * @bus_name: value to store in hcd->self.bus_name
- * @primary_hcd: a pointer to the usb_hcd structure that is sharing the
- * PCI device. Only allocate certain resources for the primary HCD
- * Context: !in_interrupt()
- *
- * Allocate a struct usb_hcd, with extra space at the end for the
- * HC driver's private data. Initialize the generic members of the
- * hcd structure.
- *
- * Return: On success, a pointer to the created and initialized HCD structure.
- * On failure (e.g. if memory is unavailable), %NULL.
- */
-struct usb_hcd *usb_create_shared_hcd(const struct hc_driver *driver,
- struct device *dev, const char *bus_name,
+struct usb_hcd *__usb_create_hcd(const struct hc_driver *driver,
+ struct device *sysdev, struct device *dev, const char *bus_name,
struct usb_hcd *primary_hcd)
{
struct usb_hcd *hcd;
@@ -2556,8 +2541,9 @@ struct usb_hcd *usb_create_shared_hcd(const struct hc_driver *driver,
usb_bus_init(&hcd->self);
hcd->self.controller = dev;
+ hcd->self.sysdev = sysdev;
hcd->self.bus_name = bus_name;
- hcd->self.uses_dma = (dev->dma_mask != NULL);
+ hcd->self.uses_dma = (sysdev->dma_mask != NULL);
init_timer(&hcd->rh_timer);
hcd->rh_timer.function = rh_timer_func;
@@ -2572,6 +2558,30 @@ struct usb_hcd *usb_create_shared_hcd(const struct hc_driver *driver,
"USB Host Controller";
return hcd;
}
+EXPORT_SYMBOL_GPL(__usb_create_hcd);
+
+/**
+ * usb_create_shared_hcd - create and initialize an HCD structure
+ * @driver: HC driver that will use this hcd
+ * @dev: device for this HC, stored in hcd->self.controller
+ * @bus_name: value to store in hcd->self.bus_name
+ * @primary_hcd: a pointer to the usb_hcd structure that is sharing the
+ * PCI device. Only allocate certain resources for the primary HCD
+ * Context: !in_interrupt()
+ *
+ * Allocate a struct usb_hcd, with extra space at the end for the
+ * HC driver's private data. Initialize the generic members of the
+ * hcd structure.
+ *
+ * Return: On success, a pointer to the created and initialized HCD structure.
+ * On failure (e.g. if memory is unavailable), %NULL.
+ */
+struct usb_hcd *usb_create_shared_hcd(const struct hc_driver *driver,
+ struct device *dev, const char *bus_name,
+ struct usb_hcd *primary_hcd)
+{
+ return __usb_create_hcd(driver, dev, dev, bus_name, primary_hcd);
+}
EXPORT_SYMBOL_GPL(usb_create_shared_hcd);
/**
@@ -2591,7 +2601,7 @@ EXPORT_SYMBOL_GPL(usb_create_shared_hcd);
struct usb_hcd *usb_create_hcd(const struct hc_driver *driver,
struct device *dev, const char *bus_name)
{
- return usb_create_shared_hcd(driver, dev, bus_name, NULL);
+ return __usb_create_hcd(driver, dev, dev, bus_name, NULL);
}
EXPORT_SYMBOL_GPL(usb_create_hcd);
@@ -2718,7 +2728,7 @@ int usb_add_hcd(struct usb_hcd *hcd,
struct usb_device *rhdev;
if (IS_ENABLED(CONFIG_USB_PHY) && !hcd->usb_phy) {
- struct usb_phy *phy = usb_get_phy_dev(hcd->self.controller, 0);
+ struct usb_phy *phy = usb_get_phy_dev(hcd->self.sysdev, 0);
if (IS_ERR(phy)) {
retval = PTR_ERR(phy);
@@ -2736,7 +2746,7 @@ int usb_add_hcd(struct usb_hcd *hcd,
}
if (IS_ENABLED(CONFIG_GENERIC_PHY) && !hcd->phy) {
- struct phy *phy = phy_get(hcd->self.controller, "usb");
+ struct phy *phy = phy_get(hcd->self.sysdev, "usb");
if (IS_ERR(phy)) {
retval = PTR_ERR(phy);
@@ -2784,7 +2794,7 @@ int usb_add_hcd(struct usb_hcd *hcd,
*/
retval = hcd_buffer_create(hcd);
if (retval != 0) {
- dev_dbg(hcd->self.controller, "pool alloc failed\n");
+ dev_dbg(hcd->self.sysdev, "pool alloc failed\n");
goto err_create_buf;
}
@@ -2794,7 +2804,7 @@ int usb_add_hcd(struct usb_hcd *hcd,
rhdev = usb_alloc_dev(NULL, &hcd->self, 0);
if (rhdev == NULL) {
- dev_err(hcd->self.controller, "unable to allocate root hub\n");
+ dev_err(hcd->self.sysdev, "unable to allocate root hub\n");
retval = -ENOMEM;
goto err_allocate_root_hub;
}
generated by cgit (git 2.34.1) at 2024-07-04 02:03:43 +0000