Merge tag 'for-linus-20130301' of git://git.infradead.org/linux-mtd

[karo-tx-linux.git] / drivers / mtd / nand / nandsim.c

diff --git a/drivers/mtd/nand/nandsim.c b/drivers/mtd/nand/nandsim.c
index 4c317982fce5dd77cf3e4b40009072bc3273a57b..891c52a30e6a48468d593926261ea8eee23260d9 100644 (file)
--- a/drivers/mtd/nand/nandsim.c
+++ b/drivers/mtd/nand/nandsim.c
@@ -1408,40 +1408,32 @@ static void clear_memalloc(int memalloc)
                current->flags &= ~PF_MEMALLOC;
 }
 
-static ssize_t read_file(struct nandsim *ns, struct file *file, void *buf, size_t count, loff_t *pos)
+static ssize_t read_file(struct nandsim *ns, struct file *file, void *buf, size_t count, loff_t pos)
 {
-       mm_segment_t old_fs;
        ssize_t tx;
        int err, memalloc;
 
-       err = get_pages(ns, file, count, *pos);
+       err = get_pages(ns, file, count, pos);
        if (err)
                return err;
-       old_fs = get_fs();
-       set_fs(get_ds());
        memalloc = set_memalloc();
-       tx = vfs_read(file, (char __user *)buf, count, pos);
+       tx = kernel_read(file, pos, buf, count);
        clear_memalloc(memalloc);
-       set_fs(old_fs);
        put_pages(ns);
        return tx;
 }
 
-static ssize_t write_file(struct nandsim *ns, struct file *file, void *buf, size_t count, loff_t *pos)
+static ssize_t write_file(struct nandsim *ns, struct file *file, void *buf, size_t count, loff_t pos)
 {
-       mm_segment_t old_fs;
        ssize_t tx;
        int err, memalloc;
 
-       err = get_pages(ns, file, count, *pos);
+       err = get_pages(ns, file, count, pos);
        if (err)
                return err;
-       old_fs = get_fs();
-       set_fs(get_ds());
        memalloc = set_memalloc();
-       tx = vfs_write(file, (char __user *)buf, count, pos);
+       tx = kernel_write(file, buf, count, pos);
        clear_memalloc(memalloc);
-       set_fs(old_fs);
        put_pages(ns);
        return tx;
 }
@@ -1511,7 +1503,7 @@ static void read_page(struct nandsim *ns, int num)
                        if (do_read_error(ns, num))
                                return;
                        pos = (loff_t)ns->regs.row * ns->geom.pgszoob + ns->regs.column + ns->regs.off;
-                       tx = read_file(ns, ns->cfile, ns->buf.byte, num, &pos);
+                       tx = read_file(ns, ns->cfile, ns->buf.byte, num, pos);
                        if (tx != num) {
                                NS_ERR("read_page: read error for page %d ret %ld\n", ns->regs.row, (long)tx);
                                return;
@@ -1573,7 +1565,7 @@ static int prog_page(struct nandsim *ns, int num)
        u_char *pg_off;
 
        if (ns->cfile) {
-               loff_t off, pos;
+               loff_t off;
                ssize_t tx;
                int all;
 
@@ -1585,8 +1577,7 @@ static int prog_page(struct nandsim *ns, int num)
                        memset(ns->file_buf, 0xff, ns->geom.pgszoob);
                } else {
                        all = 0;
-                       pos = off;
-                       tx = read_file(ns, ns->cfile, pg_off, num, &pos);
+                       tx = read_file(ns, ns->cfile, pg_off, num, off);
                        if (tx != num) {
                                NS_ERR("prog_page: read error for page %d ret %ld\n", ns->regs.row, (long)tx);
                                return -1;
@@ -1595,16 +1586,15 @@ static int prog_page(struct nandsim *ns, int num)
                for (i = 0; i < num; i++)
                        pg_off[i] &= ns->buf.byte[i];
                if (all) {
-                       pos = (loff_t)ns->regs.row * ns->geom.pgszoob;
-                       tx = write_file(ns, ns->cfile, ns->file_buf, ns->geom.pgszoob, &pos);
+                       loff_t pos = (loff_t)ns->regs.row * ns->geom.pgszoob;
+                       tx = write_file(ns, ns->cfile, ns->file_buf, ns->geom.pgszoob, pos);
                        if (tx != ns->geom.pgszoob) {
                                NS_ERR("prog_page: write error for page %d ret %ld\n", ns->regs.row, (long)tx);
                                return -1;
                        }
                        ns->pages_written[ns->regs.row] = 1;
                } else {
-                       pos = off;
-                       tx = write_file(ns, ns->cfile, pg_off, num, &pos);
+                       tx = write_file(ns, ns->cfile, pg_off, num, off);
                        if (tx != num) {
                                NS_ERR("prog_page: write error for page %d ret %ld\n", ns->regs.row, (long)tx);
                                return -1;