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remove unnecessary retry logic from usb mass storage driver.

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Signed-off-by: erictian
Reviewed-by: li-elvin


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12476 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
erictian
2011-09-29 09:14:30 +00:00
parent cfea20627c
commit 19bc852765
3 changed files with 48 additions and 44 deletions
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21
MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassImpl.c
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@@ -336,7 +336,6 @@ UsbMassInitMedia (
{
EFI_BLOCK_IO_MEDIA *Media;
EFI_STATUS Status;
UINTN Index;
Media = &UsbMass->BlockIoMedia;
@@ -351,25 +350,7 @@ UsbMassInitMedia (
Media->IoAlign = 0;
Media->MediaId = 1;
//
// Some device may spend several seconds before it is ready.
// Try several times before giving up. Wait 5s at most.
//
Status = EFI_SUCCESS;
for (Index = 0; Index < USB_BOOT_INIT_MEDIA_RETRY; Index++) {
Status = UsbBootGetParams (UsbMass);
if ((Status != EFI_MEDIA_CHANGED) && (Status != EFI_NOT_READY) && (Status != EFI_TIMEOUT)) {
break;
}
Status = UsbBootIsUnitReady (UsbMass);
if (EFI_ERROR (Status)) {
gBS->Stall (USB_BOOT_RETRY_UNIT_READY_STALL * (Index + 1));
}
}
Status = UsbBootGetParams (UsbMass);
return Status;
}