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-rw-r--r--drivers/mtd/nand/cafe_nand.c2
-rw-r--r--drivers/mtd/nand/gpmi-nand/gpmi-nand.c10
-rw-r--r--drivers/mtd/nand/mxc_nand.c37
-rw-r--r--drivers/mtd/nand/nand_base.c7
-rw-r--r--drivers/mtd/nand/nandsim.c12
5 files changed, 45 insertions, 23 deletions
diff --git a/drivers/mtd/nand/cafe_nand.c b/drivers/mtd/nand/cafe_nand.c
index 41371ba1a811..f3f6cfedd69e 100644
--- a/drivers/mtd/nand/cafe_nand.c
+++ b/drivers/mtd/nand/cafe_nand.c
@@ -102,7 +102,7 @@ static const char *part_probes[] = { "cmdlinepart", "RedBoot", NULL };
static int cafe_device_ready(struct mtd_info *mtd)
{
struct cafe_priv *cafe = mtd->priv;
- int result = !!(cafe_readl(cafe, NAND_STATUS) | 0x40000000);
+ int result = !!(cafe_readl(cafe, NAND_STATUS) & 0x40000000);
uint32_t irqs = cafe_readl(cafe, NAND_IRQ);
cafe_writel(cafe, irqs, NAND_IRQ);
diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
index a05b7b444d4f..a6cad5caba78 100644
--- a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
+++ b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
@@ -920,12 +920,12 @@ static int gpmi_ecc_read_page(struct mtd_info *mtd, struct nand_chip *chip,
*/
memset(chip->oob_poi, ~0, mtd->oobsize);
chip->oob_poi[0] = ((uint8_t *) auxiliary_virt)[0];
-
- read_page_swap_end(this, buf, mtd->writesize,
- this->payload_virt, this->payload_phys,
- nfc_geo->payload_size,
- payload_virt, payload_phys);
}
+
+ read_page_swap_end(this, buf, mtd->writesize,
+ this->payload_virt, this->payload_phys,
+ nfc_geo->payload_size,
+ payload_virt, payload_phys);
exit_nfc:
return ret;
}
diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c
index c58e6a93f445..6acc790c2fbb 100644
--- a/drivers/mtd/nand/mxc_nand.c
+++ b/drivers/mtd/nand/mxc_nand.c
@@ -273,6 +273,26 @@ static struct nand_ecclayout nandv2_hw_eccoob_4k = {
static const char *part_probes[] = { "RedBoot", "cmdlinepart", "ofpart", NULL };
+static void memcpy32_fromio(void *trg, const void __iomem *src, size_t size)
+{
+ int i;
+ u32 *t = trg;
+ const __iomem u32 *s = src;
+
+ for (i = 0; i < (size >> 2); i++)
+ *t++ = __raw_readl(s++);
+}
+
+static void memcpy32_toio(void __iomem *trg, const void *src, int size)
+{
+ int i;
+ u32 __iomem *t = trg;
+ const u32 *s = src;
+
+ for (i = 0; i < (size >> 2); i++)
+ __raw_writel(*s++, t++);
+}
+
static int check_int_v3(struct mxc_nand_host *host)
{
uint32_t tmp;
@@ -519,7 +539,7 @@ static void send_read_id_v3(struct mxc_nand_host *host)
wait_op_done(host, true);
- memcpy_fromio(host->data_buf, host->main_area0, 16);
+ memcpy32_fromio(host->data_buf, host->main_area0, 16);
}
/* Request the NANDFC to perform a read of the NAND device ID. */
@@ -535,7 +555,7 @@ static void send_read_id_v1_v2(struct mxc_nand_host *host)
/* Wait for operation to complete */
wait_op_done(host, true);
- memcpy_fromio(host->data_buf, host->main_area0, 16);
+ memcpy32_fromio(host->data_buf, host->main_area0, 16);
if (this->options & NAND_BUSWIDTH_16) {
/* compress the ID info */
@@ -797,16 +817,16 @@ static void copy_spare(struct mtd_info *mtd, bool bfrom)
if (bfrom) {
for (i = 0; i < n - 1; i++)
- memcpy_fromio(d + i * j, s + i * t, j);
+ memcpy32_fromio(d + i * j, s + i * t, j);
/* the last section */
- memcpy_fromio(d + i * j, s + i * t, mtd->oobsize - i * j);
+ memcpy32_fromio(d + i * j, s + i * t, mtd->oobsize - i * j);
} else {
for (i = 0; i < n - 1; i++)
- memcpy_toio(&s[i * t], &d[i * j], j);
+ memcpy32_toio(&s[i * t], &d[i * j], j);
/* the last section */
- memcpy_toio(&s[i * t], &d[i * j], mtd->oobsize - i * j);
+ memcpy32_toio(&s[i * t], &d[i * j], mtd->oobsize - i * j);
}
}
@@ -1070,7 +1090,8 @@ static void mxc_nand_command(struct mtd_info *mtd, unsigned command,
host->devtype_data->send_page(mtd, NFC_OUTPUT);
- memcpy_fromio(host->data_buf, host->main_area0, mtd->writesize);
+ memcpy32_fromio(host->data_buf, host->main_area0,
+ mtd->writesize);
copy_spare(mtd, true);
break;
@@ -1086,7 +1107,7 @@ static void mxc_nand_command(struct mtd_info *mtd, unsigned command,
break;
case NAND_CMD_PAGEPROG:
- memcpy_toio(host->main_area0, host->data_buf, mtd->writesize);
+ memcpy32_toio(host->main_area0, host->data_buf, mtd->writesize);
copy_spare(mtd, false);
host->devtype_data->send_page(mtd, NFC_INPUT);
host->devtype_data->send_cmd(host, command, true);
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index d47586cf64ce..a11253a0fcab 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -3501,6 +3501,13 @@ int nand_scan_tail(struct mtd_info *mtd)
/* propagate ecc info to mtd_info */
mtd->ecclayout = chip->ecc.layout;
mtd->ecc_strength = chip->ecc.strength;
+ /*
+ * Initialize bitflip_threshold to its default prior scan_bbt() call.
+ * scan_bbt() might invoke mtd_read(), thus bitflip_threshold must be
+ * properly set.
+ */
+ if (!mtd->bitflip_threshold)
+ mtd->bitflip_threshold = mtd->ecc_strength;
/* Check, if we should skip the bad block table scan */
if (chip->options & NAND_SKIP_BBTSCAN)
diff --git a/drivers/mtd/nand/nandsim.c b/drivers/mtd/nand/nandsim.c
index 6cc8fbfabb8e..cf0cd3146817 100644
--- a/drivers/mtd/nand/nandsim.c
+++ b/drivers/mtd/nand/nandsim.c
@@ -28,7 +28,7 @@
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/vmalloc.h>
-#include <asm/div64.h>
+#include <linux/math64.h>
#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/string.h>
@@ -546,12 +546,6 @@ static char *get_partition_name(int i)
return kstrdup(buf, GFP_KERNEL);
}
-static uint64_t divide(uint64_t n, uint32_t d)
-{
- do_div(n, d);
- return n;
-}
-
/*
* Initialize the nandsim structure.
*
@@ -580,7 +574,7 @@ static int init_nandsim(struct mtd_info *mtd)
ns->geom.oobsz = mtd->oobsize;
ns->geom.secsz = mtd->erasesize;
ns->geom.pgszoob = ns->geom.pgsz + ns->geom.oobsz;
- ns->geom.pgnum = divide(ns->geom.totsz, ns->geom.pgsz);
+ ns->geom.pgnum = div_u64(ns->geom.totsz, ns->geom.pgsz);
ns->geom.totszoob = ns->geom.totsz + (uint64_t)ns->geom.pgnum * ns->geom.oobsz;
ns->geom.secshift = ffs(ns->geom.secsz) - 1;
ns->geom.pgshift = chip->page_shift;
@@ -921,7 +915,7 @@ static int setup_wear_reporting(struct mtd_info *mtd)
if (!rptwear)
return 0;
- wear_eb_count = divide(mtd->size, mtd->erasesize);
+ wear_eb_count = div_u64(mtd->size, mtd->erasesize);
mem = wear_eb_count * sizeof(unsigned long);
if (mem / sizeof(unsigned long) != wear_eb_count) {
NS_ERR("Too many erase blocks for wear reporting\n");