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authorWu, Josh <Josh.wu@atmel.com>2014-05-08 16:14:06 +0800
committerTom Rini <trini@ti.com>2014-05-12 16:31:50 -0400
commit2e98f70882f8c1a09b662137884c1435a97c9a1c (patch)
tree43b50a0850bd03e6e051477f42cab39468d9add4 /fs/fat
parent06118973ede291df8617c4089972cbf888bdc96b (diff)
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fs: fat_write: fix the incorrect last cluster checking
In fat_write.c, the last clust condition check is incorrect: if ((curclust >= 0xffffff8) || (curclust >= 0xfff8)) { ... ... } For example, in FAT32 if curclust is 0x11000. It is a valid clust. But on above condition check, it will be think as a last clust. So the correct last clust check should be: in fat32, curclust >= 0xffffff8 in fat16, curclust >= 0xfff8 in fat12, curclust >= 0xff8 This patch correct the last clust check. Signed-off-by: Josh Wu <josh.wu@atmel.com>
Diffstat (limited to 'fs/fat')
-rw-r--r--fs/fat/fat_write.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/fat/fat_write.c b/fs/fat/fat_write.c
index cef138ec96..90d6ab63bf 100644
--- a/fs/fat/fat_write.c
+++ b/fs/fat/fat_write.c
@@ -882,7 +882,7 @@ static dir_entry *find_directory_entry(fsdata *mydata, int startsect,
}
curclust = get_fatent_value(mydata, dir_curclust);
- if ((curclust >= 0xffffff8) || (curclust >= 0xfff8)) {
+ if (IS_LAST_CLUST(curclust, mydata->fatsize)) {
empty_dentptr = dentptr;
return NULL;
}
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