Make it non-fatal to perform SPI transfers from interrupt context.

2026-10-31 23:21:36 +08:00 · 2012-08-25 13:15:23 -07:00
parent 380d136483
commit e5e2d7216c
2 changed files with 18 additions and 2 deletions
@@ -81,6 +81,12 @@ protected:
 	/**
 	 * Perform a SPI transfer.
 	 *
+	 * If called from interrupt context, this interface does not lock
+	 * the bus and may interfere with non-interrupt-context callers.
+	 *
+	 * Clients in a mixed interrupt/non-interrupt configuration must 
+	 * ensure appropriate interlocking.
+	 *
 	 * At least one of send or recv must be non-null.
 	 *
 	 * @param send		Bytes to send to the device, or nullptr if