update Ehci driver to distinct pci memory address and host address

[mirror_edk2.git] / MdeModulePkg / Bus / Pci / EhciDxe / UsbHcMem.h

diff --git a/MdeModulePkg/Bus/Pci/EhciDxe/UsbHcMem.h b/MdeModulePkg/Bus/Pci/EhciDxe/UsbHcMem.h
index 3394c9b99e681256617c5a9dbc8143047cb96191..f851868d10e1fbaffd75e4323c71602629f5aef3 100644 (file)
--- a/MdeModulePkg/Bus/Pci/EhciDxe/UsbHcMem.h
+++ b/MdeModulePkg/Bus/Pci/EhciDxe/UsbHcMem.h
@@ -139,11 +139,11 @@ UsbHcFreeMem (
   );\r
 \r
 /**\r
-  Get the pci memory address according to the allocated host memory address.\r
+  Calculate the corresponding pci bus address according to the Mem parameter.\r
 \r
   @param  Pool           The memory pool of the host controller.\r
-  @param  Mem            The memory to free.\r
-  @param  Size           The size of the memory to free.\r
+  @param  Mem            The pointer to host memory.\r
+  @param  Size           The size of the memory region.\r
 \r
   @return the pci memory address\r
 **/\r