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Fix problem in BUSBInterface::OtherDescriptorAt(). It will now correctly return available

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non-standard descriptors. This makes listusb useful again with usb audio & video devices...



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29275 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Ithamar R. Adema 2009-02-21 20:50:08 +00:00
parent c586ab3746
commit 3a367aec99
1 changed files with 2 additions and 2 deletions
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4
src/kits/device/USBInterface.cpp
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@ -127,7 +127,7 @@ status_t
BUSBInterface::OtherDescriptorAt(uint32 index, usb_descriptor *descriptor,
size_t length) const
{
if (length > 0 && descriptor == NULL)
if (length <= 0 && descriptor == NULL)
return B_BAD_VALUE;
usb_raw_command command;
@ -137,7 +137,7 @@ BUSBInterface::OtherDescriptorAt(uint32 index, usb_descriptor *descriptor,
command.generic_etc.alternate_index = fAlternate;
command.generic_etc.generic_index = index;
command.generic_etc.length = length;
if (ioctl(fRawFD, B_USB_RAW_COMMAND_GET_GENERIC_DESCRIPTOR, &command,
if (ioctl(fRawFD, B_USB_RAW_COMMAND_GET_GENERIC_DESCRIPTOR_ETC, &command,
sizeof(command)) || command.generic.status != B_USB_RAW_STATUS_SUCCESS)
return B_ERROR;