diff options
| -rw-r--r-- | sys/src/9/port/devsd.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/sys/src/9/port/devsd.c b/sys/src/9/port/devsd.c index b4cbd71f5..0d2a32319 100644 --- a/sys/src/9/port/devsd.c +++ b/sys/src/9/port/devsd.c @@ -770,7 +770,7 @@ sdclose(Chan* c) static long sdbio(Chan* c, int write, char* a, long len, uvlong off) { - int nchange, hard, allocd; + int nchange, hard, allocd, locked; long l; uchar *b; SDpart *pp; @@ -832,7 +832,8 @@ sdbio(Chan* c, int write, char* a, long len, uvlong off) poperror(); return 0; } - if(!(unit->inquiry[1] & 0x80)){ + locked = (unit->inquiry[1] & 0x80) != 0; + if(!locked){ qunlock(&unit->ctl); poperror(); } @@ -854,7 +855,7 @@ sdbio(Chan* c, int write, char* a, long len, uvlong off) if(waserror()){ if(allocd) sdfree(b); - if(!(unit->inquiry[1] & 0x80)) + if(!locked) decref(&sdev->r); /* gadverdamme! */ nexterror(); } @@ -896,7 +897,7 @@ sdbio(Chan* c, int write, char* a, long len, uvlong off) sdfree(b); poperror(); - if(unit->inquiry[1] & 0x80){ + if(locked){ qunlock(&unit->ctl); poperror(); } |