mirror of https://github.com/acidanthera/audk.git
e69d7e99e7
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1169 PCI spec: They are also required to always implement function 0 in the device. Implementing other functions is optional and may be assigned in any order (i.e., a two-function device must respond to function 0 but can choose any of the other possible function numbers (1-7) for the second function). This patch updates ScanPciBus() to not scan other functions if function 0 is not implemented. Test done: Added debug code below in the second loop of ScanPciBus(), compared the debug logs with and without this patch, many non-0 unimplemented functions are skipped correctly. DEBUG (( DEBUG_INFO, "%a() B%02xD%02xF%02x VendorId: %04x DeviceId: %04x\n", __FUNCTION__, Bus, Device, Function, VendorID, DeviceID )); Cc: Jiewen Yao <jiewen.yao@intel.com> Cc: Rangasai V Chaganty <rangasai.v.chaganty@intel.com> Cc: Tomson Chang <tomson.chang@intel.com> Cc: Jenny Huang <jenny.huang@intel.com> Cc: Amy Chan <amy.chan@intel.com> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Star Zeng <star.zeng@intel.com> Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com> Reviewed-by: Jiewen Yao <jiewen.yao@intel.com> |
||
|---|---|---|
| .. | ||
| Feature | ||
| Include | ||
| Library/DxeSmbiosDataHobLib | ||
| IntelSiliconPkg.dec | ||
| IntelSiliconPkg.dsc | ||