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| author | Nikolai Kondrashov <Nikolai.Kondrashov@redhat.com> | 2014-07-12 21:02:33 +0300 |
|---|---|---|
| committer | Nikolai Kondrashov <Nikolai.Kondrashov@redhat.com> | 2014-07-12 21:02:33 +0300 |
| commit | cc74aae8d020e0ddd069dbb107900cec54e56cd5 (patch) | |
| tree | 398a64e5f3b76f1c045c083a9129beb13a82f154 /include/uhd/iface.h | |
| parent | 10f8a6ba71e416605f8e0521198554ffbf72ad9a (diff) | |
| download | usbhid-dump-cc74aae8d020e0ddd069dbb107900cec54e56cd5.tar.gz | |
Retrieve declared descriptor size
Request transfer of report descriptor with the destination buffer size
equal to report descriptor size declared in HID descriptor, instead of
the maximum possible report descriptor size. Only fall back to the
maximum possible size, if report descriptor size cannot be retrieved.
This fixes ERROR_PIPE when retrieving report descriptors from some
devices (e.g. Waltop Vega tablet).
Diffstat (limited to 'include/uhd/iface.h')
| -rw-r--r-- | include/uhd/iface.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/uhd/iface.h b/include/uhd/iface.h index eabaa7d..9317015 100644 --- a/include/uhd/iface.h +++ b/include/uhd/iface.h @@ -45,6 +45,7 @@ struct uhd_iface { uint8_t int_in_ep_addr; /**< Interrupt IN EP address */ uint16_t int_in_ep_maxp; /**< Interrupt IN EP maximum packet size */ + uint16_t rd_len; /**< Report descriptor length */ bool detached; /**< True if the interface was detached from the kernel driver, false otherwise */ @@ -77,13 +78,15 @@ extern bool uhd_iface_valid(const uhd_iface *iface); * @param number Interface number. * @param int_in_ep_addr Interrupt in endpoint address. * @param int_in_ep_maxp Interrupt in endpoint maximum packet size. + * @param rd_len Report descriptor length. * * @return New interface or NULL, if failed to allocate. */ extern uhd_iface *uhd_iface_new(const uhd_dev *dev, uint8_t number, uint8_t int_in_ep_addr, - uint16_t int_in_ep_maxp); + uint16_t int_in_ep_maxp, + uint16_t rd_len); /** * Free an interface. |