diff options
Diffstat (limited to 'MdeModulePkg/Bus')
| -rw-r--r-- | MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AhciMode.c | 13 | ||||
| -rw-r--r-- | MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AhciMode.h | 2 |
2 files changed, 14 insertions, 1 deletions
diff --git a/MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AhciMode.c b/MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AhciMode.c index 7101c665bf..1c45312712 100644 --- a/MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AhciMode.c +++ b/MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AhciMode.c @@ -2202,8 +2202,19 @@ AhciModeInitialization ( return EFI_OUT_OF_RESOURCES;
}
- for (Port = 0; Port < MaxPortNumber; Port ++) {
+ for (Port = 0; Port < EFI_AHCI_MAX_PORTS; Port ++) {
if ((PortImplementBitMap & (BIT0 << Port)) != 0) {
+ //
+ // According to AHCI spec, MaxPortNumber should be equal or greater than the number of implemented ports.
+ //
+ if ((MaxPortNumber--) == 0) {
+ //
+ // Should never be here.
+ //
+ ASSERT (FALSE);
+ return EFI_SUCCESS;
+ }
+
IdeInit->NotifyPhase (IdeInit, EfiIdeBeforeChannelEnumeration, Port);
//
diff --git a/MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AhciMode.h b/MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AhciMode.h index 052e7837f5..485b64799e 100644 --- a/MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AhciMode.h +++ b/MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AhciMode.h @@ -26,6 +26,8 @@ #define EFI_AHCI_IS_OFFSET 0x0008
#define EFI_AHCI_PI_OFFSET 0x000C
+#define EFI_AHCI_MAX_PORTS 32
+
typedef struct {
UINT32 Lower32;
UINT32 Upper32;
|