From 18820471ae1b8c3977ed453da2d8f1fcfabda963 Mon Sep 17 00:00:00 2001
From: Damien George <damien.p.george@gmail.com>
Date: Tue, 24 Nov 2015 15:51:07 +0000
Subject: [PATCH] stmhal/irq: Add comment about SDIO priority being higher than
 DMA.

---
 stmhal/irq.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/stmhal/irq.h b/stmhal/irq.h
index 3c0f13d0a7..1771d3675f 100644
--- a/stmhal/irq.h
+++ b/stmhal/irq.h
@@ -69,6 +69,7 @@ MP_DECLARE_CONST_FUN_OBJ(pyb_enable_irq_obj);
 #define IRQ_PRI_FLASH           1
 #define IRQ_SUBPRI_FLASH                    1
 
+// SDIO must be higher priority than DMA for SDIO DMA transfers to work.
 #define IRQ_PRI_SDIO            4
 #define IRQ_SUBPRI_SDIO                     0