Merge branch 'perf/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

6 files changed, 54 insertions, 42 deletions

diff --git a/drivers/mtd/onenand/Kconfig b/drivers/mtd/onenand/Kconfig
index 4f42619..772ad29 100644
--- a/drivers/mtd/onenand/Kconfig
+++ b/drivers/mtd/onenand/Kconfig
@@ -1,7 +1,6 @@
 menuconfig MTD_ONENAND
 	tristate "OneNAND Device Support"
 	depends on MTD
-	select MTD_PARTITIONS
 	help
 	  This enables support for accessing all type of OneNAND flash
 	  devices. For further information see
diff --git a/drivers/mtd/onenand/generic.c b/drivers/mtd/onenand/generic.c
index ac08750..2d70d35 100644
--- a/drivers/mtd/onenand/generic.c
+++ b/drivers/mtd/onenand/generic.c
@@ -30,9 +30,7 @@
  */
 #define DRIVER_NAME	"onenand-flash"
 
-#ifdef CONFIG_MTD_PARTITIONS
 static const char *part_probes[] = { "cmdlinepart", NULL,  };
-#endif
 
 struct onenand_info {
 	struct mtd_info		mtd;
@@ -75,15 +73,13 @@ static int __devinit generic_onenand_probe(struct platform_device *pdev)
 		goto out_iounmap;
 	}
 
-#ifdef CONFIG_MTD_PARTITIONS
 	err = parse_mtd_partitions(&info->mtd, part_probes, &info->parts, 0);
 	if (err > 0)
-		add_mtd_partitions(&info->mtd, info->parts, err);
+		mtd_device_register(&info->mtd, info->parts, err);
 	else if (err <= 0 && pdata && pdata->parts)
-		add_mtd_partitions(&info->mtd, pdata->parts, pdata->nr_parts);
+		mtd_device_register(&info->mtd, pdata->parts, pdata->nr_parts);
 	else
-#endif
-		err = add_mtd_device(&info->mtd);
+		err = mtd_device_register(&info->mtd, NULL, 0);
 
 	platform_set_drvdata(pdev, info);
 
@@ -108,11 +104,7 @@ static int __devexit generic_onenand_remove(struct platform_device *pdev)
 	platform_set_drvdata(pdev, NULL);
 
 	if (info) {
-		if (info->parts)
-			del_mtd_partitions(&info->mtd);
-		else
-			del_mtd_device(&info->mtd);
-
+		mtd_device_unregister(&info->mtd);
 		onenand_release(&info->mtd);
 		release_mem_region(res->start, size);
 		iounmap(info->onenand.base);
diff --git a/drivers/mtd/onenand/omap2.c b/drivers/mtd/onenand/omap2.c
index 1fcb41a..a916dec 100644
--- a/drivers/mtd/onenand/omap2.c
+++ b/drivers/mtd/onenand/omap2.c
@@ -67,9 +67,7 @@ struct omap2_onenand {
 	struct regulator *regulator;
 };
 
-#ifdef CONFIG_MTD_PARTITIONS
 static const char *part_probes[] = { "cmdlinepart", NULL,  };
-#endif
 
 static void omap2_onenand_dma_cb(int lch, u16 ch_status, void *data)
 {
@@ -755,15 +753,13 @@ static int __devinit omap2_onenand_probe(struct platform_device *pdev)
 	if ((r = onenand_scan(&c->mtd, 1)) < 0)
 		goto err_release_regulator;
 
-#ifdef CONFIG_MTD_PARTITIONS
 	r = parse_mtd_partitions(&c->mtd, part_probes, &c->parts, 0);
 	if (r > 0)
-		r = add_mtd_partitions(&c->mtd, c->parts, r);
+		r = mtd_device_register(&c->mtd, c->parts, r);
 	else if (pdata->parts != NULL)
-		r = add_mtd_partitions(&c->mtd, pdata->parts, pdata->nr_parts);
+		r = mtd_device_register(&c->mtd, pdata->parts, pdata->nr_parts);
 	else
-#endif
-		r = add_mtd_device(&c->mtd);
+		r = mtd_device_register(&c->mtd, NULL, 0);
 	if (r)
 		goto err_release_onenand;
 
diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c
index 56a8b20..ac9e959 100644
--- a/drivers/mtd/onenand/onenand_base.c
+++ b/drivers/mtd/onenand/onenand_base.c
@@ -65,11 +65,11 @@ MODULE_PARM_DESC(otp,	"Corresponding behaviour of OneNAND in OTP"
 			"	   : 2 -> 1st Block lock"
 			"	   : 3 -> BOTH OTP Block and 1st Block lock");
 
-/**
- *  onenand_oob_128 - oob info for Flex-Onenand with 4KB page
- *  For now, we expose only 64 out of 80 ecc bytes
+/*
+ * flexonenand_oob_128 - oob info for Flex-Onenand with 4KB page
+ * For now, we expose only 64 out of 80 ecc bytes
  */
-static struct nand_ecclayout onenand_oob_128 = {
+static struct nand_ecclayout flexonenand_oob_128 = {
 	.eccbytes	= 64,
 	.eccpos		= {
 		6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
@@ -86,6 +86,35 @@ static struct nand_ecclayout onenand_oob_128 = {
 	}
 };
 
+/*
+ * onenand_oob_128 - oob info for OneNAND with 4KB page
+ *
+ * Based on specification:
+ * 4Gb M-die OneNAND Flash (KFM4G16Q4M, KFN8G16Q4M). Rev. 1.3, Apr. 2010
+ *
+ * For eccpos we expose only 64 bytes out of 72 (see struct nand_ecclayout)
+ *
+ * oobfree uses the spare area fields marked as
+ * "Managed by internal ECC logic for Logical Sector Number area"
+ */
+static struct nand_ecclayout onenand_oob_128 = {
+	.eccbytes	= 64,
+	.eccpos		= {
+		7, 8, 9, 10, 11, 12, 13, 14, 15,
+		23, 24, 25, 26, 27, 28, 29, 30, 31,
+		39, 40, 41, 42, 43, 44, 45, 46, 47,
+		55, 56, 57, 58, 59, 60, 61, 62, 63,
+		71, 72, 73, 74, 75, 76, 77, 78, 79,
+		87, 88, 89, 90, 91, 92, 93, 94, 95,
+		103, 104, 105, 106, 107, 108, 109, 110, 111,
+		119
+	},
+	.oobfree	= {
+		{2, 3}, {18, 3}, {34, 3}, {50, 3},
+		{66, 3}, {82, 3}, {98, 3}, {114, 3}
+	}
+};
+
 /**
  * onenand_oob_64 - oob info for large (2KB) page
  */
@@ -2424,7 +2453,7 @@ static int onenand_block_by_block_erase(struct mtd_info *mtd,
 		len -= block_size;
 		addr += block_size;
 
-		if (addr == region_end) {
+		if (region && addr == region_end) {
 			if (!len)
 				break;
 			region++;
@@ -4018,8 +4047,13 @@ int onenand_scan(struct mtd_info *mtd, int maxchips)
 	 */
 	switch (mtd->oobsize) {
 	case 128:
-		this->ecclayout = &onenand_oob_128;
-		mtd->subpage_sft = 0;
+		if (FLEXONENAND(this)) {
+			this->ecclayout = &flexonenand_oob_128;
+			mtd->subpage_sft = 0;
+		} else {
+			this->ecclayout = &onenand_oob_128;
+			mtd->subpage_sft = 2;
+		}
 		break;
 	case 64:
 		this->ecclayout = &onenand_oob_64;
@@ -4108,12 +4142,8 @@ void onenand_release(struct mtd_info *mtd)
 {
 	struct onenand_chip *this = mtd->priv;
 
-#ifdef CONFIG_MTD_PARTITIONS
 	/* Deregister partitions */
-	del_mtd_partitions (mtd);
-#endif
-	/* Deregister the device */
-	del_mtd_device (mtd);
+	mtd_device_unregister(mtd);
 
 	/* Free bad block table memory, if allocated */
 	if (this->bbm) {
diff --git a/drivers/mtd/onenand/onenand_sim.c b/drivers/mtd/onenand/onenand_sim.c
index 5ef3bd5..85399e3 100644
--- a/drivers/mtd/onenand/onenand_sim.c
+++ b/drivers/mtd/onenand/onenand_sim.c
@@ -539,7 +539,8 @@ static int __init onenand_sim_init(void)
 		return -ENXIO;
 	}
 
-	add_mtd_partitions(&info->mtd, info->parts, ARRAY_SIZE(os_partitions));
+	mtd_device_register(&info->mtd, info->parts,
+			    ARRAY_SIZE(os_partitions));
 
 	return 0;
 }
diff --git a/drivers/mtd/onenand/samsung.c b/drivers/mtd/onenand/samsung.c
index a4c74a9..3306b5b 100644
--- a/drivers/mtd/onenand/samsung.c
+++ b/drivers/mtd/onenand/samsung.c
@@ -147,9 +147,7 @@ struct s3c_onenand {
 	struct resource *dma_res;
 	unsigned long	phys_base;
 	struct completion	complete;
-#ifdef CONFIG_MTD_PARTITIONS
 	struct mtd_partition *parts;
-#endif
 };
 
 #define CMD_MAP_00(dev, addr)		(dev->cmd_map(MAP_00, ((addr) << 1)))
@@ -159,9 +157,7 @@ struct s3c_onenand {
 
 static struct s3c_onenand *onenand;
 
-#ifdef CONFIG_MTD_PARTITIONS
 static const char *part_probes[] = { "cmdlinepart", NULL, };
-#endif
 
 static inline int s3c_read_reg(int offset)
 {
@@ -1021,15 +1017,13 @@ static int s3c_onenand_probe(struct platform_device *pdev)
 	if (s3c_read_reg(MEM_CFG_OFFSET) & ONENAND_SYS_CFG1_SYNC_READ)
 		dev_info(&onenand->pdev->dev, "OneNAND Sync. Burst Read enabled\n");
 
-#ifdef CONFIG_MTD_PARTITIONS
 	err = parse_mtd_partitions(mtd, part_probes, &onenand->parts, 0);
 	if (err > 0)
-		add_mtd_partitions(mtd, onenand->parts, err);
+		mtd_device_register(mtd, onenand->parts, err);
 	else if (err <= 0 && pdata && pdata->parts)
-		add_mtd_partitions(mtd, pdata->parts, pdata->nr_parts);
+		mtd_device_register(mtd, pdata->parts, pdata->nr_parts);
 	else
-#endif
-		err = add_mtd_device(mtd);
+		err = mtd_device_register(mtd, NULL, 0);
 
 	platform_set_drvdata(pdev, mtd);