Ruiyu Ni a662afb5b0 MdeModulePkg/UsbStorage: Fix "map -r" cannot detect media change ... When system boots to Shell without CDROM in the USB CDROM drive, and then user inserts one CDROM with Eltorito file system, "map -r" cannot show the the new Eltorito file system. The root cause is when "map" command probes the media change by calling dummy ReadBlockIo(), UsbMassStorage ReadBlockIo() contains a bug that ignores the media change status: UsbBootDetectMedia() ignores the EFI_MEDIA_CHANGED status returned from UsbBootIsUnitReady(), in consequence, the BlockIo protocol re-installation logic doesn't run. By checking the code change history, below commit SHA-1: 19bc852765 * remove unnecessary retry logic from usb mass storage driver. adds the code to skip EFI_MEDIA_CHANGED status. Talking with the original committer Tian Feng, he said the change was just a code cleanup, not for a special bug fix. So I revert part of the patch, only keep the change that removes unnecessary retry logic. It can fix this bug. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com> Cc: Feng Tian <feng.tian@intel.com> Reviewed-by: Star Zeng <star.zeng@intel.com>		2018-01-22 10:18:04 +08:00
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Pci	MdeModulePkg/EhciDxe: call EhcFreeUrb when int-transfer completes	2018-01-16 10:58:02 +08:00
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Usb	MdeModulePkg/UsbStorage: Fix "map -r" cannot detect media change	2018-01-22 10:18:04 +08:00