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Diffstat (limited to 'openpicc/application/iso14443_layer2a.h')
-rw-r--r--openpicc/application/iso14443_layer2a.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/openpicc/application/iso14443_layer2a.h b/openpicc/application/iso14443_layer2a.h
index cf31ec4..858af81 100644
--- a/openpicc/application/iso14443_layer2a.h
+++ b/openpicc/application/iso14443_layer2a.h
@@ -23,8 +23,8 @@ typedef void (*iso14443_receive_callback_t)(ssc_dma_rx_buffer_t *buffer, u_int8_
* This call will block until a frame is received or an exception happens. Obviously it must not be run
* from IRQ context.
*
- * Warning: When you get a buffer from the function then it's state is set to PROCESSING and you must
- * FREE it yourself.
+ * Warning: When you get a buffer from the function then its state is set to PROCESSING and you must
+ * FREE it yourself. However, you MUST NOT free a buffer from the callback.
*
* Return values:
* >= 0 Frame received, return value is buffer length (yes, 0 is a valid buffer length)
personal git repositories of Harald Welte. Your mileage may vary