mtd: nand: denali: remove meaningless writes to read-only registers

The write accesses to LOGICAL_PAGE_{DATA,SPARE}_SIZE have no effect
because the Denali User's Guide says these registers are read-only.

The hardware automatically multiplies the main/spare size by the
number of devices and update LOGICAL_PAGE_{DATA,SPARE}_SIZE.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>

1 files changed, 0 insertions, 16 deletions

diff --git a/drivers/mtd/nand/denali.c b/drivers/mtd/nand/denali.c
index b442a3ed9f0f..1a2e0638affc 100644
--- a/drivers/mtd/nand/denali.c
+++ b/drivers/mtd/nand/denali.c
@@ -342,8 +342,6 @@ static void get_samsung_nand_para(struct denali_nand_info *denali,
 
 static void get_toshiba_nand_para(struct denali_nand_info *denali)
 {
-        uint32_t tmp;
-
         /*
          * Workaround to fix a controller bug which reports a wrong
          * spare area size for some kind of Toshiba NAND device
@@ -351,10 +349,6 @@ static void get_toshiba_nand_para(struct denali_nand_info *denali)
         if ((ioread32(denali->flash_reg + DEVICE_MAIN_AREA_SIZE) == 4096) &&
                 (ioread32(denali->flash_reg + DEVICE_SPARE_AREA_SIZE) == 64)) {
                 iowrite32(216, denali->flash_reg + DEVICE_SPARE_AREA_SIZE);
-                tmp = ioread32(denali->flash_reg + DEVICES_CONNECTED) *
-                        ioread32(denali->flash_reg + DEVICE_SPARE_AREA_SIZE);
-                iowrite32(tmp,
-                                denali->flash_reg + LOGICAL_PAGE_SPARE_SIZE);
 #if SUPPORT_15BITECC
                 iowrite32(15, denali->flash_reg + ECC_CORRECTION);
 #elif SUPPORT_8BITECC
@@ -366,22 +360,12 @@ static void get_toshiba_nand_para(struct denali_nand_info *denali)
 static void get_hynix_nand_para(struct denali_nand_info *denali,
                                                         uint8_t device_id)
 {
-        uint32_t main_size, spare_size;
-
         switch (device_id) {
         case 0xD5: /* Hynix H27UAG8T2A, H27UBG8U5A or H27UCG8VFA */
         case 0xD7: /* Hynix H27UDG8VEM, H27UCG8UDM or H27UCG8V5A */
                 iowrite32(128, denali->flash_reg + PAGES_PER_BLOCK);
                 iowrite32(4096, denali->flash_reg + DEVICE_MAIN_AREA_SIZE);
                 iowrite32(224, denali->flash_reg + DEVICE_SPARE_AREA_SIZE);
-                main_size = 4096 *
-                        ioread32(denali->flash_reg + DEVICES_CONNECTED);
-                spare_size = 224 *
-                        ioread32(denali->flash_reg + DEVICES_CONNECTED);
-                iowrite32(main_size,
-                                denali->flash_reg + LOGICAL_PAGE_DATA_SIZE);
-                iowrite32(spare_size,
-                                denali->flash_reg + LOGICAL_PAGE_SPARE_SIZE);
                 iowrite32(0, denali->flash_reg + DEVICE_WIDTH);
 #if SUPPORT_15BITECC
                 iowrite32(15, denali->flash_reg + ECC_CORRECTION);