[PATCH 1/1] fs: fat: remove superfluous assignments

Do not assign a value to a variable if it is not used.
Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de --- fs/fat/fat.c | 3 ++- fs/fat/fat_write.c | 6 +++--- 2 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/fs/fat/fat.c b/fs/fat/fat.c index fb6ce094ac..ccba268f61 100644 --- a/fs/fat/fat.c +++ b/fs/fat/fat.c @@ -248,7 +248,6 @@ static __u32 get_fatent(fsdata *mydata, __u32 entry) static int get_cluster(fsdata *mydata, __u32 clustnum, __u8 *buffer, unsigned long size) { - __u32 idx = 0; __u32 startsect; int ret;
@@ -277,6 +276,8 @@ get_cluster(fsdata *mydata, __u32 clustnum, __u8 *buffer, unsigned long size) size -= mydata->sect_size; } } else { + __u32 idx; + idx = size / mydata->sect_size; if (idx == 0) ret = 0; diff --git a/fs/fat/fat_write.c b/fs/fat/fat_write.c index aae3a6a3d1..b43a27b205 100644 --- a/fs/fat/fat_write.c +++ b/fs/fat/fat_write.c @@ -573,7 +573,6 @@ static __u32 determine_fatent(fsdata *mydata, __u32 entry) static int set_sectors(fsdata *mydata, u32 startsect, u8 *buffer, u32 size) { - u32 nsects = 0; int ret;
debug("startsect: %d\n", startsect); @@ -595,6 +594,8 @@ set_sectors(fsdata *mydata, u32 startsect, u8 *buffer, u32 size) size -= mydata->sect_size; } } else if (size >= mydata->sect_size) { + u32 nsects; + nsects = size / mydata->sect_size; ret = disk_write(startsect, nsects, buffer); if (ret != nsects) { @@ -785,7 +786,6 @@ get_set_cluster(fsdata *mydata, __u32 clustnum, loff_t pos, __u8 *buffer, }
size -= wsize; - buffer += wsize; *gotsize += wsize; }
@@ -1482,10 +1482,10 @@ static int delete_single_dentry(fat_itr *itr) */ static int delete_long_name(fat_itr *itr) { - struct dir_entry *dent = itr->dent; int seqn = itr->dent->nameext.name[0] & ~LAST_LONG_ENTRY_MASK;
while (seqn--) { + struct dir_entry *dent; int ret;
ret = delete_single_dentry(itr); -- 2.29.2

Hi
Am Di., 26. Jan. 2021 um 00:14 Uhr schrieb Heinrich Schuchardt xypron.glpk@gmx.de:
Do not assign a value to a variable if it is not used.
I am not very happy about this commit message tbo. What you are doing is reducing the scope of variables.. so write this in your commit message.
Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de
fs/fat/fat.c | 3 ++- fs/fat/fat_write.c | 6 +++--- 2 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/fs/fat/fat.c b/fs/fat/fat.c index fb6ce094ac..ccba268f61 100644 --- a/fs/fat/fat.c +++ b/fs/fat/fat.c @@ -248,7 +248,6 @@ static __u32 get_fatent(fsdata *mydata, __u32 entry) static int get_cluster(fsdata *mydata, __u32 clustnum, __u8 *buffer, unsigned long size) {
__u32 idx = 0; __u32 startsect; int ret;
@@ -277,6 +276,8 @@ get_cluster(fsdata *mydata, __u32 clustnum, __u8 *buffer, unsigned long size) size -= mydata->sect_size; } } else {
__u32 idx;
idx = size / mydata->sect_size; if (idx == 0) ret = 0;
diff --git a/fs/fat/fat_write.c b/fs/fat/fat_write.c index aae3a6a3d1..b43a27b205 100644 --- a/fs/fat/fat_write.c +++ b/fs/fat/fat_write.c @@ -573,7 +573,6 @@ static __u32 determine_fatent(fsdata *mydata, __u32 entry) static int set_sectors(fsdata *mydata, u32 startsect, u8 *buffer, u32 size) {
u32 nsects = 0; int ret; debug("startsect: %d\n", startsect);
@@ -595,6 +594,8 @@ set_sectors(fsdata *mydata, u32 startsect, u8 *buffer, u32 size) size -= mydata->sect_size; } } else if (size >= mydata->sect_size) {
u32 nsects;
nsects = size / mydata->sect_size; ret = disk_write(startsect, nsects, buffer); if (ret != nsects) {
@@ -785,7 +786,6 @@ get_set_cluster(fsdata *mydata, __u32 clustnum, loff_t pos, __u8 *buffer, }
size -= wsize;
buffer += wsize;
That looks wrong when staring at it from my mail client.
*gotsize += wsize; }
@@ -1482,10 +1482,10 @@ static int delete_single_dentry(fat_itr *itr) */ static int delete_long_name(fat_itr *itr) {
struct dir_entry *dent = itr->dent; int seqn = itr->dent->nameext.name[0] & ~LAST_LONG_ENTRY_MASK; while (seqn--) {
struct dir_entry *dent; int ret; ret = delete_single_dentry(itr);
-- 2.29.2

On 26.01.21 08:53, Christian Gmeiner wrote:
Hi
Am Di., 26. Jan. 2021 um 00:14 Uhr schrieb Heinrich Schuchardt xypron.glpk@gmx.de:
Do not assign a value to a variable if it is not used.
I am not very happy about this commit message tbo. What you are doing is reducing the scope of variables.. so write this in your commit message.
Sure.
Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de
fs/fat/fat.c | 3 ++- fs/fat/fat_write.c | 6 +++--- 2 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/fs/fat/fat.c b/fs/fat/fat.c index fb6ce094ac..ccba268f61 100644 --- a/fs/fat/fat.c +++ b/fs/fat/fat.c @@ -248,7 +248,6 @@ static __u32 get_fatent(fsdata *mydata, __u32 entry) static int get_cluster(fsdata *mydata, __u32 clustnum, __u8 *buffer, unsigned long size) {
__u32 idx = 0; __u32 startsect; int ret;
@@ -277,6 +276,8 @@ get_cluster(fsdata *mydata, __u32 clustnum, __u8 *buffer, unsigned long size) size -= mydata->sect_size; } } else {
__u32 idx;
idx = size / mydata->sect_size; if (idx == 0) ret = 0;
diff --git a/fs/fat/fat_write.c b/fs/fat/fat_write.c index aae3a6a3d1..b43a27b205 100644 --- a/fs/fat/fat_write.c +++ b/fs/fat/fat_write.c @@ -573,7 +573,6 @@ static __u32 determine_fatent(fsdata *mydata, __u32 entry) static int set_sectors(fsdata *mydata, u32 startsect, u8 *buffer, u32 size) {
u32 nsects = 0; int ret; debug("startsect: %d\n", startsect);
@@ -595,6 +594,8 @@ set_sectors(fsdata *mydata, u32 startsect, u8 *buffer, u32 size) size -= mydata->sect_size; } } else if (size >= mydata->sect_size) {
u32 nsects;
nsects = size / mydata->sect_size; ret = disk_write(startsect, nsects, buffer); if (ret != nsects) {
@@ -785,7 +786,6 @@ get_set_cluster(fsdata *mydata, __u32 clustnum, loff_t pos, __u8 *buffer, }
size -= wsize;
buffer += wsize;
That looks wrong when staring at it from my mail client.
This is the last time buffer is accessed before return. Why do you think it is wrong?
Best regards
Heinrich
*gotsize += wsize; }
@@ -1482,10 +1482,10 @@ static int delete_single_dentry(fat_itr *itr) */ static int delete_long_name(fat_itr *itr) {
struct dir_entry *dent = itr->dent; int seqn = itr->dent->nameext.name[0] & ~LAST_LONG_ENTRY_MASK; while (seqn--) {
struct dir_entry *dent; int ret; ret = delete_single_dentry(itr);
-- 2.29.2

On Tue, Jan 26, 2021 at 12:14:14AM +0100, Heinrich Schuchardt wrote:
Do not assign a value to a variable if it is not used.
Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de
Applied to u-boot/master, thanks!
participants (3)
-
Christian Gmeiner
-
Heinrich Schuchardt
-
Tom Rini