]> git.karo-electronics.de Git - mv-sheeva.git/blobdiff - drivers/mtd/mtdpart.c
Merge branch 'for-3.4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj...
[mv-sheeva.git] / drivers / mtd / mtdpart.c
index 47d00f0bb36d59ae9ae787814f3e5b86eeadcb49..9651c06de0a9298f4db58265524ecaebe2c2b9b4 100644 (file)
@@ -65,12 +65,8 @@ static int part_read(struct mtd_info *mtd, loff_t from, size_t len,
        int res;
 
        stats = part->master->ecc_stats;
-
-       if (from >= mtd->size)
-               len = 0;
-       else if (from + len > mtd->size)
-               len = mtd->size - from;
-       res = mtd_read(part->master, from + part->offset, len, retlen, buf);
+       res = part->master->_read(part->master, from + part->offset, len,
+                                 retlen, buf);
        if (unlikely(res)) {
                if (mtd_is_bitflip(res))
                        mtd->ecc_stats.corrected += part->master->ecc_stats.corrected - stats.corrected;
@@ -84,19 +80,16 @@ static int part_point(struct mtd_info *mtd, loff_t from, size_t len,
                size_t *retlen, void **virt, resource_size_t *phys)
 {
        struct mtd_part *part = PART(mtd);
-       if (from >= mtd->size)
-               len = 0;
-       else if (from + len > mtd->size)
-               len = mtd->size - from;
-       return mtd_point(part->master, from + part->offset, len, retlen,
-                        virt, phys);
+
+       return part->master->_point(part->master, from + part->offset, len,
+                                   retlen, virt, phys);
 }
 
-static void part_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
+static int part_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
 {
        struct mtd_part *part = PART(mtd);
 
-       mtd_unpoint(part->master, from + part->offset, len);
+       return part->master->_unpoint(part->master, from + part->offset, len);
 }
 
 static unsigned long part_get_unmapped_area(struct mtd_info *mtd,
@@ -107,7 +100,8 @@ static unsigned long part_get_unmapped_area(struct mtd_info *mtd,
        struct mtd_part *part = PART(mtd);
 
        offset += part->offset;
-       return mtd_get_unmapped_area(part->master, len, offset, flags);
+       return part->master->_get_unmapped_area(part->master, len, offset,
+                                               flags);
 }
 
 static int part_read_oob(struct mtd_info *mtd, loff_t from,
@@ -138,7 +132,7 @@ static int part_read_oob(struct mtd_info *mtd, loff_t from,
                        return -EINVAL;
        }
 
-       res = mtd_read_oob(part->master, from + part->offset, ops);
+       res = part->master->_read_oob(part->master, from + part->offset, ops);
        if (unlikely(res)) {
                if (mtd_is_bitflip(res))
                        mtd->ecc_stats.corrected++;
@@ -152,55 +146,46 @@ static int part_read_user_prot_reg(struct mtd_info *mtd, loff_t from,
                size_t len, size_t *retlen, u_char *buf)
 {
        struct mtd_part *part = PART(mtd);
-       return mtd_read_user_prot_reg(part->master, from, len, retlen, buf);
+       return part->master->_read_user_prot_reg(part->master, from, len,
+                                                retlen, buf);
 }
 
 static int part_get_user_prot_info(struct mtd_info *mtd,
                struct otp_info *buf, size_t len)
 {
        struct mtd_part *part = PART(mtd);
-       return mtd_get_user_prot_info(part->master, buf, len);
+       return part->master->_get_user_prot_info(part->master, buf, len);
 }
 
 static int part_read_fact_prot_reg(struct mtd_info *mtd, loff_t from,
                size_t len, size_t *retlen, u_char *buf)
 {
        struct mtd_part *part = PART(mtd);
-       return mtd_read_fact_prot_reg(part->master, from, len, retlen, buf);
+       return part->master->_read_fact_prot_reg(part->master, from, len,
+                                                retlen, buf);
 }
 
 static int part_get_fact_prot_info(struct mtd_info *mtd, struct otp_info *buf,
                size_t len)
 {
        struct mtd_part *part = PART(mtd);
-       return mtd_get_fact_prot_info(part->master, buf, len);
+       return part->master->_get_fact_prot_info(part->master, buf, len);
 }
 
 static int part_write(struct mtd_info *mtd, loff_t to, size_t len,
                size_t *retlen, const u_char *buf)
 {
        struct mtd_part *part = PART(mtd);
-       if (!(mtd->flags & MTD_WRITEABLE))
-               return -EROFS;
-       if (to >= mtd->size)
-               len = 0;
-       else if (to + len > mtd->size)
-               len = mtd->size - to;
-       return mtd_write(part->master, to + part->offset, len, retlen, buf);
+       return part->master->_write(part->master, to + part->offset, len,
+                                   retlen, buf);
 }
 
 static int part_panic_write(struct mtd_info *mtd, loff_t to, size_t len,
                size_t *retlen, const u_char *buf)
 {
        struct mtd_part *part = PART(mtd);
-       if (!(mtd->flags & MTD_WRITEABLE))
-               return -EROFS;
-       if (to >= mtd->size)
-               len = 0;
-       else if (to + len > mtd->size)
-               len = mtd->size - to;
-       return mtd_panic_write(part->master, to + part->offset, len, retlen,
-                              buf);
+       return part->master->_panic_write(part->master, to + part->offset, len,
+                                         retlen, buf);
 }
 
 static int part_write_oob(struct mtd_info *mtd, loff_t to,
@@ -208,50 +193,43 @@ static int part_write_oob(struct mtd_info *mtd, loff_t to,
 {
        struct mtd_part *part = PART(mtd);
 
-       if (!(mtd->flags & MTD_WRITEABLE))
-               return -EROFS;
-
        if (to >= mtd->size)
                return -EINVAL;
        if (ops->datbuf && to + ops->len > mtd->size)
                return -EINVAL;
-       return mtd_write_oob(part->master, to + part->offset, ops);
+       return part->master->_write_oob(part->master, to + part->offset, ops);
 }
 
 static int part_write_user_prot_reg(struct mtd_info *mtd, loff_t from,
                size_t len, size_t *retlen, u_char *buf)
 {
        struct mtd_part *part = PART(mtd);
-       return mtd_write_user_prot_reg(part->master, from, len, retlen, buf);
+       return part->master->_write_user_prot_reg(part->master, from, len,
+                                                 retlen, buf);
 }
 
 static int part_lock_user_prot_reg(struct mtd_info *mtd, loff_t from,
                size_t len)
 {
        struct mtd_part *part = PART(mtd);
-       return mtd_lock_user_prot_reg(part->master, from, len);
+       return part->master->_lock_user_prot_reg(part->master, from, len);
 }
 
 static int part_writev(struct mtd_info *mtd, const struct kvec *vecs,
                unsigned long count, loff_t to, size_t *retlen)
 {
        struct mtd_part *part = PART(mtd);
-       if (!(mtd->flags & MTD_WRITEABLE))
-               return -EROFS;
-       return mtd_writev(part->master, vecs, count, to + part->offset,
-                         retlen);
+       return part->master->_writev(part->master, vecs, count,
+                                    to + part->offset, retlen);
 }
 
 static int part_erase(struct mtd_info *mtd, struct erase_info *instr)
 {
        struct mtd_part *part = PART(mtd);
        int ret;
-       if (!(mtd->flags & MTD_WRITEABLE))
-               return -EROFS;
-       if (instr->addr >= mtd->size)
-               return -EINVAL;
+
        instr->addr += part->offset;
-       ret = mtd_erase(part->master, instr);
+       ret = part->master->_erase(part->master, instr);
        if (ret) {
                if (instr->fail_addr != MTD_FAIL_ADDR_UNKNOWN)
                        instr->fail_addr -= part->offset;
@@ -262,7 +240,7 @@ static int part_erase(struct mtd_info *mtd, struct erase_info *instr)
 
 void mtd_erase_callback(struct erase_info *instr)
 {
-       if (instr->mtd->erase == part_erase) {
+       if (instr->mtd->_erase == part_erase) {
                struct mtd_part *part = PART(instr->mtd);
 
                if (instr->fail_addr != MTD_FAIL_ADDR_UNKNOWN)
@@ -277,52 +255,44 @@ EXPORT_SYMBOL_GPL(mtd_erase_callback);
 static int part_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
        struct mtd_part *part = PART(mtd);
-       if ((len + ofs) > mtd->size)
-               return -EINVAL;
-       return mtd_lock(part->master, ofs + part->offset, len);
+       return part->master->_lock(part->master, ofs + part->offset, len);
 }
 
 static int part_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
        struct mtd_part *part = PART(mtd);
-       if ((len + ofs) > mtd->size)
-               return -EINVAL;
-       return mtd_unlock(part->master, ofs + part->offset, len);
+       return part->master->_unlock(part->master, ofs + part->offset, len);
 }
 
 static int part_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
        struct mtd_part *part = PART(mtd);
-       if ((len + ofs) > mtd->size)
-               return -EINVAL;
-       return mtd_is_locked(part->master, ofs + part->offset, len);
+       return part->master->_is_locked(part->master, ofs + part->offset, len);
 }
 
 static void part_sync(struct mtd_info *mtd)
 {
        struct mtd_part *part = PART(mtd);
-       mtd_sync(part->master);
+       part->master->_sync(part->master);
 }
 
 static int part_suspend(struct mtd_info *mtd)
 {
        struct mtd_part *part = PART(mtd);
-       return mtd_suspend(part->master);
+       return part->master->_suspend(part->master);
 }
 
 static void part_resume(struct mtd_info *mtd)
 {
        struct mtd_part *part = PART(mtd);
-       mtd_resume(part->master);
+       part->master->_resume(part->master);
 }
 
 static int part_block_isbad(struct mtd_info *mtd, loff_t ofs)
 {
        struct mtd_part *part = PART(mtd);
-       if (ofs >= mtd->size)
-               return -EINVAL;
        ofs += part->offset;
-       return mtd_block_isbad(part->master, ofs);
+       return part->master->_block_isbad(part->master, ofs);
 }
 
 static int part_block_markbad(struct mtd_info *mtd, loff_t ofs)
@@ -330,12 +300,8 @@ static int part_block_markbad(struct mtd_info *mtd, loff_t ofs)
        struct mtd_part *part = PART(mtd);
        int res;
 
-       if (!(mtd->flags & MTD_WRITEABLE))
-               return -EROFS;
-       if (ofs >= mtd->size)
-               return -EINVAL;
        ofs += part->offset;
-       res = mtd_block_markbad(part->master, ofs);
+       res = part->master->_block_markbad(part->master, ofs);
        if (!res)
                mtd->ecc_stats.badblocks++;
        return res;
@@ -410,54 +376,55 @@ static struct mtd_part *allocate_partition(struct mtd_info *master,
         */
        slave->mtd.dev.parent = master->dev.parent;
 
-       slave->mtd.read = part_read;
-       slave->mtd.write = part_write;
+       slave->mtd._read = part_read;
+       slave->mtd._write = part_write;
 
-       if (master->panic_write)
-               slave->mtd.panic_write = part_panic_write;
+       if (master->_panic_write)
+               slave->mtd._panic_write = part_panic_write;
 
-       if (master->point && master->unpoint) {
-               slave->mtd.point = part_point;
-               slave->mtd.unpoint = part_unpoint;
+       if (master->_point && master->_unpoint) {
+               slave->mtd._point = part_point;
+               slave->mtd._unpoint = part_unpoint;
        }
 
-       if (master->get_unmapped_area)
-               slave->mtd.get_unmapped_area = part_get_unmapped_area;
-       if (master->read_oob)
-               slave->mtd.read_oob = part_read_oob;
-       if (master->write_oob)
-               slave->mtd.write_oob = part_write_oob;
-       if (master->read_user_prot_reg)
-               slave->mtd.read_user_prot_reg = part_read_user_prot_reg;
-       if (master->read_fact_prot_reg)
-               slave->mtd.read_fact_prot_reg = part_read_fact_prot_reg;
-       if (master->write_user_prot_reg)
-               slave->mtd.write_user_prot_reg = part_write_user_prot_reg;
-       if (master->lock_user_prot_reg)
-               slave->mtd.lock_user_prot_reg = part_lock_user_prot_reg;
-       if (master->get_user_prot_info)
-               slave->mtd.get_user_prot_info = part_get_user_prot_info;
-       if (master->get_fact_prot_info)
-               slave->mtd.get_fact_prot_info = part_get_fact_prot_info;
-       if (master->sync)
-               slave->mtd.sync = part_sync;
-       if (!partno && !master->dev.class && master->suspend && master->resume) {
-                       slave->mtd.suspend = part_suspend;
-                       slave->mtd.resume = part_resume;
+       if (master->_get_unmapped_area)
+               slave->mtd._get_unmapped_area = part_get_unmapped_area;
+       if (master->_read_oob)
+               slave->mtd._read_oob = part_read_oob;
+       if (master->_write_oob)
+               slave->mtd._write_oob = part_write_oob;
+       if (master->_read_user_prot_reg)
+               slave->mtd._read_user_prot_reg = part_read_user_prot_reg;
+       if (master->_read_fact_prot_reg)
+               slave->mtd._read_fact_prot_reg = part_read_fact_prot_reg;
+       if (master->_write_user_prot_reg)
+               slave->mtd._write_user_prot_reg = part_write_user_prot_reg;
+       if (master->_lock_user_prot_reg)
+               slave->mtd._lock_user_prot_reg = part_lock_user_prot_reg;
+       if (master->_get_user_prot_info)
+               slave->mtd._get_user_prot_info = part_get_user_prot_info;
+       if (master->_get_fact_prot_info)
+               slave->mtd._get_fact_prot_info = part_get_fact_prot_info;
+       if (master->_sync)
+               slave->mtd._sync = part_sync;
+       if (!partno && !master->dev.class && master->_suspend &&
+           master->_resume) {
+                       slave->mtd._suspend = part_suspend;
+                       slave->mtd._resume = part_resume;
        }
-       if (master->writev)
-               slave->mtd.writev = part_writev;
-       if (master->lock)
-               slave->mtd.lock = part_lock;
-       if (master->unlock)
-               slave->mtd.unlock = part_unlock;
-       if (master->is_locked)
-               slave->mtd.is_locked = part_is_locked;
-       if (master->block_isbad)
-               slave->mtd.block_isbad = part_block_isbad;
-       if (master->block_markbad)
-               slave->mtd.block_markbad = part_block_markbad;
-       slave->mtd.erase = part_erase;
+       if (master->_writev)
+               slave->mtd._writev = part_writev;
+       if (master->_lock)
+               slave->mtd._lock = part_lock;
+       if (master->_unlock)
+               slave->mtd._unlock = part_unlock;
+       if (master->_is_locked)
+               slave->mtd._is_locked = part_is_locked;
+       if (master->_block_isbad)
+               slave->mtd._block_isbad = part_block_isbad;
+       if (master->_block_markbad)
+               slave->mtd._block_markbad = part_block_markbad;
+       slave->mtd._erase = part_erase;
        slave->master = master;
        slave->offset = part->offset;
 
@@ -549,7 +516,8 @@ static struct mtd_part *allocate_partition(struct mtd_info *master,
        }
 
        slave->mtd.ecclayout = master->ecclayout;
-       if (master->block_isbad) {
+       slave->mtd.ecc_strength = master->ecc_strength;
+       if (master->_block_isbad) {
                uint64_t offs = 0;
 
                while (offs < slave->mtd.size) {