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authorRob Clark <robdclark@gmail.com>2017-09-09 13:16:00 -0400
committerTom Rini <trini@konsulko.com>2017-09-15 09:03:15 -0400
commit265edc03d5a19550d92cbd6e10631d5a15bdd1d5 (patch)
treed1275a8421fe74498d39d61059595c5648845eb2 /fs
parent21a24c3bf35bac83d66ce4a48eb0c7dd8a7227cb (diff)
fs/fat: Clean up open-coded sector <-> cluster conversions
Use the clust_to_sect() helper that was introduced earlier, and add an inverse sect_to_clust(), plus update the various spots that open-coded this conversion previously. Signed-off-by: Rob Clark <robdclark@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'fs')
-rw-r--r--fs/fat/fat.c8
-rw-r--r--fs/fat/fat_write.c8
2 files changed, 6 insertions, 10 deletions
diff --git a/fs/fat/fat.c b/fs/fat/fat.c
index 65873a2c2a..f5f74c12ff 100644
--- a/fs/fat/fat.c
+++ b/fs/fat/fat.c
@@ -257,8 +257,7 @@ get_cluster(fsdata *mydata, __u32 clustnum, __u8 *buffer, unsigned long size)
int ret;
if (clustnum > 0) {
- startsect = mydata->data_begin +
- clustnum * mydata->clust_size;
+ startsect = clust_to_sect(mydata, clustnum);
} else {
startsect = mydata->rootdir_sect;
}
@@ -594,9 +593,8 @@ static int get_fs_info(fsdata *mydata)
mydata->data_begin = mydata->rootdir_sect +
mydata->rootdir_size -
(mydata->clust_size * 2);
- mydata->root_cluster = (mydata->rootdir_sect -
- mydata->data_begin) /
- mydata->clust_size;
+ mydata->root_cluster =
+ sect_to_clust(mydata, mydata->rootdir_sect);
}
mydata->fatbufnum = -1;
diff --git a/fs/fat/fat_write.c b/fs/fat/fat_write.c
index d0468baf8f..9d2e0ed74c 100644
--- a/fs/fat/fat_write.c
+++ b/fs/fat/fat_write.c
@@ -502,8 +502,7 @@ set_cluster(fsdata *mydata, __u32 clustnum, __u8 *buffer,
int ret;
if (clustnum > 0)
- startsect = mydata->data_begin +
- clustnum * mydata->clust_size;
+ startsect = clust_to_sect(mydata, clustnum);
else
startsect = mydata->rootdir_sect;
@@ -751,8 +750,7 @@ static int check_overflow(fsdata *mydata, __u32 clustnum, loff_t size)
__u32 startsect, sect_num, offset;
if (clustnum > 0) {
- startsect = mydata->data_begin +
- clustnum * mydata->clust_size;
+ startsect = clust_to_sect(mydata, clustnum);
} else {
startsect = mydata->rootdir_sect;
}
@@ -791,7 +789,7 @@ static dir_entry *empty_dentptr;
static dir_entry *find_directory_entry(fsdata *mydata, int startsect,
char *filename, dir_entry *retdent, __u32 start)
{
- __u32 curclust = (startsect - mydata->data_begin) / mydata->clust_size;
+ __u32 curclust = sect_to_clust(mydata, startsect);
debug("get_dentfromdir: %s\n", filename);