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-rw-r--r--sys/src/9/port/devsd.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/src/9/port/devsd.c b/sys/src/9/port/devsd.c
index dd1feeedf..5ea1d47b8 100644
--- a/sys/src/9/port/devsd.c
+++ b/sys/src/9/port/devsd.c
@@ -306,8 +306,8 @@ sdgetunit(SDev* sdev, int subno)
unit->subno = subno;
unit->dev = sdev;
- if(sdev->enabled == 0 && sdev->ifc->enable)
- sdev->enabled = sdev->ifc->enable(sdev);
+ if(sdev->enabled == 0)
+ sdev->enabled = sdev->ifc->enable == nil || sdev->ifc->enable(sdev);
/*
* No need to lock anything here as this is only