diff options
| author | Peter Chen <peter.chen@freescale.com> | 2014-08-19 09:51:53 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-09-23 21:28:41 -0700 |
| commit | 026f3fcbb0fc516e0fd3467318f13a6144e519a7 (patch) | |
| tree | bcfcff0df92e380661107e5b1071fc98e37e8b0f /drivers/usb/core/hub.c | |
| parent | f2693b430b33d9554daa0f21fbcae57633f8d4f1 (diff) | |
usb: core: TPL should apply for both OTG and EH
According to On-The-Go and Embedded Host Supplement to the USB Revision
2.0 Specification, the targeted hosts (non-PC hosts) include both
embedded hosts and otg, and each targeted host product defines the
set of supported peripherals on a TPL (Targeted Peripheral List). So,
TPL should apply for both OTG and embedded host, and the otg support is
not a must for embedded host.
The TPL support feature will only be effect when CONFIG_USB_OTG_WHITELIST
has been chosen and hcd->tpl_support flag is set, it can avoid the enumeration
fails problem for the user who chooses CONFIG_USB_OTG_WHITELIST wrongly.
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/core/hub.c')
| -rw-r--r-- | drivers/usb/core/hub.c | 33 |
1 files changed, 15 insertions, 18 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index c01b72467524..db1d587cbb95 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -32,6 +32,7 @@ #include <asm/byteorder.h> #include "hub.h" +#include "otg_whitelist.h" #define USB_VENDOR_GENESYS_LOGIC 0x05e3 #define HUB_QUIRK_CHECK_PORT_AUTOSUSPEND 0x01 @@ -2205,9 +2206,6 @@ static void announce_device(struct usb_device *udev) static inline void announce_device(struct usb_device *udev) { } #endif -#ifdef CONFIG_USB_OTG -#include "otg_whitelist.h" -#endif /** * usb_enumerate_device_otg - FIXME (usbcore-internal) @@ -2267,21 +2265,6 @@ static int usb_enumerate_device_otg(struct usb_device *udev) } } } - - if (!is_targeted(udev)) { - - /* Maybe it can talk to us, though we can't talk to it. - * (Includes HNP test device.) - */ - if (udev->bus->b_hnp_enable || udev->bus->is_b_host) { - err = usb_port_suspend(udev, PMSG_SUSPEND); - if (err < 0) - dev_dbg(&udev->dev, "HNP fail, %d\n", err); - } - err = -ENOTSUPP; - goto fail; - } -fail: #endif return err; } @@ -2304,6 +2287,7 @@ fail: static int usb_enumerate_device(struct usb_device *udev) { int err; + struct usb_hcd *hcd = bus_to_hcd(udev->bus); if (udev->config == NULL) { err = usb_get_configuration(udev); @@ -2325,6 +2309,19 @@ static int usb_enumerate_device(struct usb_device *udev) if (err < 0) return err; + if (IS_ENABLED(CONFIG_USB_OTG_WHITELIST) && hcd->tpl_support && + !is_targeted(udev) && IS_ENABLED(CONFIG_USB_OTG)) { + /* Maybe it can talk to us, though we can't talk to it. + * (Includes HNP test device.) + */ + if (udev->bus->b_hnp_enable || udev->bus->is_b_host) { + err = usb_port_suspend(udev, PMSG_AUTO_SUSPEND); + if (err < 0) + dev_dbg(&udev->dev, "HNP fail, %d\n", err); + } + return -ENOTSUPP; + } + usb_detect_interface_quirks(udev); return 0; |