+static void fun_select_chip(struct mtd_info *mtd, int chip_nr)
+{
+       struct nand_chip *chip =3D mtd->priv;
+       struct fsl_upm_nand *fun =3D to_fsl_upm_nand(mtd);
+
+       if (chip_nr =3D=3D -1) {
+               chip->cmd_ctrl(mtd, NAND_CMD_NONE, 0 |=20
NAND_CTRL_CHANGE);
+       } else if (chip_nr >=3D 0) {
+               fun->chip_number =3D chip_nr;
+               chip->IO_ADDR_R =3D chip->IO_ADDR_W =3D
+                       fun->io_base + chip_nr * fun->chip_offset;
+       } else {
+               BUG();
+       }

braces are not required here...

+       prop =3D of_get_property(ofdev->node, "num-chips", &size);
+       if (prop && size =3D=3D sizeof(uint32_t)) {
+               fun->num_chips =3D *prop;
+               if (fun->num_chips >=3D NAND_MAX_CHIPS) {
+                       dev_err(&ofdev->dev, "too much chips");
+                       ret =3D -EINVAL;
+                       goto err1;
+               }
+       } else {
+               fun->num_chips =3D 1;
+       }

ditto...=