nand/fsl_ifc: Increase eccstat[] for IFC 2.0

IFC 2.0 doubled the SRAM size, which means double the number of
ECCSTAT registers.  Fix the resulting array overflow.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>

diff --git a/drivers/mtd/nand/fsl_ifc_nand.c b/drivers/mtd/nand/fsl_ifc_nand.c
index 7903eeb..28f197e 100644 (file)
--- a/drivers/mtd/nand/fsl_ifc_nand.c
+++ b/drivers/mtd/nand/fsl_ifc_nand.c
@@ -292,7 +292,7 @@ static int fsl_ifc_run_command(struct mtd_info *mtd)
        struct fsl_ifc *ifc = ctrl->regs;
        u32 timeo = (CONFIG_SYS_HZ * 10) / 1000;
        u32 time_start;
-       u32 eccstat[4] = {0};
+       u32 eccstat[8] = {0};
        int i;
 
        /* set the chip select for NAND Transaction */
@@ -325,8 +325,15 @@ static int fsl_ifc_run_command(struct mtd_info *mtd)
                int sector = bufnum * chip->ecc.steps;
                int sector_end = sector + chip->ecc.steps - 1;
 
-               for (i = sector / 4; i <= sector_end / 4; i++)
+               for (i = sector / 4; i <= sector_end / 4; i++) {
+                       if (i >= ARRAY_SIZE(eccstat)) {
+                               printf("%s: eccstat too small for %d\n",
+                                      __func__, i);
+                               return -EIO;
+                       }
+
                        eccstat[i] = ifc_in32(&ifc->ifc_nand.nand_eccstat[i]);
+               }
 
                for (i = sector; i <= sector_end; i++) {
                        errors = check_read_ecc(mtd, ctrl, eccstat, i);