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-rw-r--r--sys/src/9/pc/io.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/src/9/pc/io.h b/sys/src/9/pc/io.h
index 754085cf7..a17826671 100644
--- a/sys/src/9/pc/io.h
+++ b/sys/src/9/pc/io.h
@@ -173,7 +173,7 @@ enum {
enum { /* type 0 pre-defined header */
PciCIS = 0x28, /* cardbus CIS pointer */
PciSVID = 0x2C, /* subsystem vendor ID */
- PciSID = 0x2E, /* cardbus CIS pointer */
+ PciSID = 0x2E, /* subsystem ID */
PciEBAR0 = 0x30, /* expansion ROM base address */
PciMGNT = 0x3E, /* burst period length */
PciMLT = 0x3F, /* maximum latency between bursts */