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path: root/drivers/net/ipa/gsi.h
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Diffstat (limited to 'drivers/net/ipa/gsi.h')
-rw-r--r--drivers/net/ipa/gsi.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/ipa/gsi.h b/drivers/net/ipa/gsi.h
index bad1a78a96ed..982c57550ef3 100644
--- a/drivers/net/ipa/gsi.h
+++ b/drivers/net/ipa/gsi.h
@@ -48,12 +48,13 @@ struct gsi_ring {
*
* A channel ring consists of TRE entries filled by the AP and passed
* to the hardware for processing. For a channel ring, the ring index
- * identifies the next unused entry to be filled by the AP.
+ * identifies the next unused entry to be filled by the AP. In this
+ * case the initial value is assumed by hardware to be 0.
*
* An event ring consists of event structures filled by the hardware
* and passed to the AP. For event rings, the ring index identifies
* the next ring entry that is not known to have been filled by the
- * hardware.
+ * hardware. The initial value used is arbitrary (so we use 0).
*/
u32 index;
};