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usbip: vhci-hcd: Rework vhci_hcd_init

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A vhci struct is added as the platform-specific data to the vhci
platform device, in order to get the vhci by its platform device.
This is done in vhci_hcd_init().

Signed-off-by: Yuyang Du <yuyang.du@intel.com>
Acked-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Yuyang Du 2017-06-08 13:04:08 +08:00 committed by Greg Kroah-Hartman
parent 89a73d281f
commit dff3565b8e
3 changed files with 30 additions and 24 deletions
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51
drivers/usb/usbip/vhci_hcd.c
View File

@ -1178,24 +1178,6 @@ static struct platform_driver vhci_driver = {
},
};
static int add_platform_device(int id)
{
struct platform_device *pdev;
int dev_nr;
if (id == 0)
dev_nr = -1;
else
dev_nr = id;
pdev = platform_device_register_simple(driver_name, dev_nr, NULL, 0);
if (IS_ERR(pdev))
return PTR_ERR(pdev);
vhcis[id].pdev = pdev;
return 0;
}
static void del_platform_devices(void)
{
struct platform_device *pdev;
@ -1224,23 +1206,46 @@ static int __init vhci_hcd_init(void)
if (vhcis == NULL)
return -ENOMEM;
for (i = 0; i < vhci_num_controllers; i++) {
vhcis[i].pdev = platform_device_alloc(driver_name, i);
if (!vhcis[i].pdev) {
i--;
while (i >= 0)
platform_device_put(vhcis[i--].pdev);
ret = -ENOMEM;
goto err_device_alloc;
}
}
for (i = 0; i < vhci_num_controllers; i++) {
void *vhci = &vhcis[i];
ret = platform_device_add_data(vhcis[i].pdev, &vhci, sizeof(void *));
if (ret)
goto err_driver_register;
}
ret = platform_driver_register(&vhci_driver);
if (ret)
goto err_driver_register;
for (i = 0; i < vhci_num_controllers; i++) {
ret = add_platform_device(i);
if (ret)
goto err_platform_device_register;
ret = platform_device_add(vhcis[i].pdev);
if (ret < 0) {
i--;
while (i >= 0)
platform_device_del(vhcis[i--].pdev);
goto err_add_hcd;
}
}
pr_info(DRIVER_DESC " v" USBIP_VERSION "\n");
return ret;
err_platform_device_register:
del_platform_devices();
err_add_hcd:
platform_driver_unregister(&vhci_driver);
err_driver_register:
for (i = 0; i < vhci_num_controllers; i++)
platform_device_put(vhcis[i].pdev);
err_device_alloc:
kfree(vhcis);
return ret;
}

2
tools/usb/usbip/libsrc/vhci_driver.c
View File

@ -248,7 +248,7 @@ int usbip_vhci_driver_open(void)
vhci_driver->hc_device =
udev_device_new_from_subsystem_sysname(udev_context,
USBIP_VHCI_BUS_TYPE,
USBIP_VHCI_DRV_NAME);
USBIP_VHCI_DEVICE_NAME);
if (!vhci_driver->hc_device) {
err("udev_device_new_from_subsystem_sysname failed");
goto err;

1
tools/usb/usbip/libsrc/vhci_driver.h
View File

@ -11,6 +11,7 @@
#include "usbip_common.h"
#define USBIP_VHCI_BUS_TYPE "platform"
#define USBIP_VHCI_DEVICE_NAME "vhci_hcd.0"
#define MAXNPORT 128
struct usbip_imported_device {