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...@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Feng Tian <feng.t...@intel.com>
---
MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdMmcPciHcDxe.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdMmcPciHcDxe.c
b/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdMmcPciHcDxe.c
index a841f47..053a80f 100644
--- 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)) {
DEBUG ((EFI_D_INFO, "SdMmcPciHcEnumerateDevice: device connected at
slot %d of pci %p\n", Slot, Private->PciIo));
//
+ // Reset the specified slot of the SD/MMC Pci Host Controller
+ //
+ Status = SdMmcHcReset (Private->PciIo, Slot);
+ if (EFI_ERROR (Status)) {
+ continue;
+ }
+ //
// Reinitialize slot and restart identification process for the new
attached device
//
Status = SdMmcHcInitHost (Private->PciIo, Slot,
Private->Capability[Slot]);
--
2.7.1.windows.2
_______________________________________________
edk2-devel mailing list
edk2-devel@lists.01.org
https://lists.01.org/mailman/listinfo/edk2-devel
