MdeModulePkg/SdMmcPciHc: Reset the slot when sd device is connected

The original code doesn't reset the slot when there is device change.
It may bring issue on device identification procedure of some SD cards.

Cc: Hao Wu <hao.a.wu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Feng Tian <feng.tian@Intel.com>
Reviewed-by: Hao Wu <hao.a.wu@intel.com>

diff --git a/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdMmcPciHcDxe.c b/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdMmcPciHcDxe.c
index 59649e1cad4d4864d625bc43df2de01bd2309c5a..31def727ebd1dee560eae33256ee423f9a31faa5 100644 (file)
--- a/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdMmcPciHcDxe.c
+++ b/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdMmcPciHcDxe.c
@@ -275,6 +275,13 @@ SdMmcPciHcEnumerateDevice (
       if ((Status == EFI_MEDIA_CHANGED) && (MediaPresent == TRUE)) {\r
         DEBUG ((EFI_D_INFO, "SdMmcPciHcEnumerateDevice: device connected at slot %d of pci %p\n", Slot, Private->PciIo));\r
         //\r
+        // Reset the specified slot of the SD/MMC Pci Host Controller\r
+        //\r
+        Status = SdMmcHcReset (Private->PciIo, Slot);\r
+        if (EFI_ERROR (Status)) {\r
+          continue;\r
+        }\r
+        //\r
         // Reinitialize slot and restart identification process for the new attached device\r
         //\r
         Status = SdMmcHcInitHost (Private->PciIo, Slot, Private->Capability[Slot]);\r