mirror_edk2/MdeModulePkg/Bus
Feng Tian bf4808d644 MdeModulePkg/UsbBus: reduce the port status polling before port reset
This change is used to remove the port status polling in port reset
functions.

Why it's needed is because:
1) The same polling on same port has taken place prior to this removed
one. See UsbEnumeratePort()->GetPortStatus(). So this polling in
UsbEnumerateNewDev()->ResetPort() is redundant.
2) EDKII Xhci driver hooks all GetPortStatus() operations. If we don't
remove this one, XHCI driver's XhcPollPortStatusChange() may enter twice
in reset process and wrongly think the device is unplugged.

Cc: Star Zeng <star.zeng@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
2016-07-25 09:36:41 +08:00
..
Ata MdeModulePkg AtaBusDxe: Fix ATA commands cannot be sent to some devices 2016-07-12 20:27:25 +08:00
I2c/I2cDxe MdeModulePkg: Convert all .uni files to utf-8 2015-12-15 04:56:23 +00:00
Isa MdeModulePkg: Fix typos in comments and variables 2016-07-11 10:29:48 +08:00
Pci MdeModulePkg/PciHostBridgeDxe: fix Ia32 GCC44 build error 2016-07-18 19:22:41 +02:00
Scsi MdeModulePkg ScsiDiskDxe: Add Erase Block Protocol support for UFS devices 2016-05-20 13:42:51 +08:00
Sd MdeModulePkg: Fix typos in comments and variables 2016-07-11 10:29:48 +08:00
Ufs MdeModulePkg: Fix typos in comments and variables 2016-07-11 10:29:48 +08:00
Usb MdeModulePkg/UsbBus: reduce the port status polling before port reset 2016-07-25 09:36:41 +08:00