xfnw/plan9fox
1
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity

sdiahci: fix (unused) hba reset function (thanks erik quanstro)

Browse source 
from the specification:

software may reset the entire HBA by setting GHC.HR to '1'.
When software sets the GHC.HR bit to '1', the HBA shall perform
an internal reset action. The bit shall be cleared to '0'
by the HBA when the reset is complete.
This commit is contained in:
cinap_lenrek 2014-05-16 21:33:49 +02:00
parent eb687adecd
commit b3eeb59964
1 changed files with 1 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
sys/src/9/pc/sdiahci.c
View file

@ -723,7 +723,7 @@ ahcihbareset(Ahba *h)
h->ghc |= Hhr;
for(wait = 0; wait < 1000; wait += 100){
if(h->ghc == 0)
if((h->ghc & Hhr) == 0)
return 0;
delay(100);
}