drm/radeon/r600_cs: off by one errors

There are a bunch of off by one errors in the sanity checks here.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/drivers/gpu/drm/radeon/r600_cs.c b/drivers/gpu/drm/radeon/r600_cs.c
index 4706294..fa7c6e5 100644 (file)
--- a/drivers/gpu/drm/radeon/r600_cs.c
+++ b/drivers/gpu/drm/radeon/r600_cs.c
@@ -159,7 +159,7 @@ static const struct gpu_formats color_formats_table[] = {
 
 static inline bool fmt_is_valid_color(u32 format)
 {
-       if (format > ARRAY_SIZE(color_formats_table))
+       if (format >= ARRAY_SIZE(color_formats_table))
                return false;
        
        if (color_formats_table[format].valid_color)
@@ -170,7 +170,7 @@ static inline bool fmt_is_valid_color(u32 format)
 
 static inline bool fmt_is_valid_texture(u32 format)
 {
-       if (format > ARRAY_SIZE(color_formats_table))
+       if (format >= ARRAY_SIZE(color_formats_table))
                return false;
        
        if (color_formats_table[format].blockwidth > 0)
@@ -181,7 +181,7 @@ static inline bool fmt_is_valid_texture(u32 format)
 
 static inline int fmt_get_blocksize(u32 format)
 {
-       if (format > ARRAY_SIZE(color_formats_table))
+       if (format >= ARRAY_SIZE(color_formats_table))
                return 0;
 
        return color_formats_table[format].blocksize;
@@ -190,7 +190,8 @@ static inline int fmt_get_blocksize(u32 format)
 static inline int fmt_get_nblocksx(u32 format, u32 w)
 {
        unsigned bw;
-       if (format > ARRAY_SIZE(color_formats_table))
+
+       if (format >= ARRAY_SIZE(color_formats_table))
                return 0;
 
        bw = color_formats_table[format].blockwidth;
@@ -203,7 +204,8 @@ static inline int fmt_get_nblocksx(u32 format, u32 w)
 static inline int fmt_get_nblocksy(u32 format, u32 h)
 {
        unsigned bh;
-       if (format > ARRAY_SIZE(color_formats_table))
+
+       if (format >= ARRAY_SIZE(color_formats_table))
                return 0;
 
        bh = color_formats_table[format].blockheight;
@@ -216,7 +218,8 @@ static inline int fmt_get_nblocksy(u32 format, u32 h)
 static inline int r600_bpe_from_format(u32 *bpe, u32 format)
 {
        unsigned res;
-       if (format > ARRAY_SIZE(color_formats_table))
+
+       if (format >= ARRAY_SIZE(color_formats_table))
                goto fail;
 
        res = color_formats_table[format].blocksize;