diff options
Diffstat (limited to 'MdeModulePkg/Bus')
| -rw-r--r-- | MdeModulePkg/Bus/Ata/AtaAtapiPassThru/IdeMode.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/MdeModulePkg/Bus/Ata/AtaAtapiPassThru/IdeMode.c b/MdeModulePkg/Bus/Ata/AtaAtapiPassThru/IdeMode.c index 420ad273dc..4928ed570b 100644 --- a/MdeModulePkg/Bus/Ata/AtaAtapiPassThru/IdeMode.c +++ b/MdeModulePkg/Bus/Ata/AtaAtapiPassThru/IdeMode.c @@ -2614,6 +2614,11 @@ DetectAndConfigIdeDevice ( for (IdeDevice = 0; IdeDevice < EfiIdeMaxDevice; IdeDevice++) {
//
+ // Select Master or Slave device to get the return signature for ATA DEVICE DIAGNOSTIC cmd.
+ //
+ IdeWritePortB (PciIo, IdeRegisters->Head, (UINT8)((IdeDevice << 4) | 0xe0));
+
+ //
// Send ATA Device Execut Diagnostic command.
// This command should work no matter DRDY is ready or not
//
|