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[Qemu-devel] [PATCH] ide: fix enum comparison for gcc 4.7


From: John Snow
Subject: [Qemu-devel] [PATCH] ide: fix enum comparison for gcc 4.7
Date: Wed, 20 Sep 2017 15:41:44 -0400

Apparently GCC gets bent over comparing enum values against zero.
Replace the conditional with something less readable.

Signed-off-by: John Snow <address@hidden>
---
 hw/ide/core.c             | 2 +-
 include/hw/ide/internal.h | 3 +--
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/hw/ide/core.c b/hw/ide/core.c
index a19bd90..d63eb4a 100644
--- a/hw/ide/core.c
+++ b/hw/ide/core.c
@@ -68,7 +68,7 @@ const char *IDE_DMA_CMD_lookup[IDE_DMA__COUNT] = {
 
 static const char *IDE_DMA_CMD_str(enum ide_dma_cmd enval)
 {
-    if (enval >= IDE_DMA__BEGIN && enval < IDE_DMA__COUNT) {
+    if ((unsigned)enval < IDE_DMA__COUNT) {
         return IDE_DMA_CMD_lookup[enval];
     }
     return "DMA UNKNOWN CMD";
diff --git a/include/hw/ide/internal.h b/include/hw/ide/internal.h
index 180e00e..e641012 100644
--- a/include/hw/ide/internal.h
+++ b/include/hw/ide/internal.h
@@ -333,8 +333,7 @@ struct unreported_events {
 };
 
 enum ide_dma_cmd {
-    IDE_DMA__BEGIN = 0,
-    IDE_DMA_READ = IDE_DMA__BEGIN,
+    IDE_DMA_READ = 0,
     IDE_DMA_WRITE,
     IDE_DMA_TRIM,
     IDE_DMA_ATAPI,
-- 
2.9.5




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