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Fixed USB_GetHIDReportItemInfo() function modifying the given report item's data when the report item does not exist within the supplied report of a multiple report HID device.

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This commit is contained in:
Dean Camera 2010-08-10 12:13:07 +00:00
parent eb060db71b
commit f4de17207e
3 changed files with 12 additions and 6 deletions
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6
LUFA/Drivers/USB/Class/Host/HIDParser.h
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@ -285,8 +285,10 @@
/** Extracts the given report item's value out of the given HID report and places it into the Value
* member of the report item's \ref HID_ReportItem_t structure.
*
* When called, this copies the report item's Value element to it's PreviousValue element for easy
* checking to see if an item's value has changed before processing a report.
* When called on a report with an item that exists in that report, this copies the report item's Value
* to it's PreviousValue element for easy checking to see if an item's value has changed before processing
* a report. If the given item does not exist in the report, the function does not modify the report item's
* data.
*
* \param[in] ReportData Buffer containing an IN or FEATURE report from an attached device.
* \param[in,out] ReportItem Pointer to the report item of interest in a \ref HID_ReportInfo_t ReportItem array.