Merge tag 'for-linus-3.4' of git://git.infradead.org/mtd-2.6

Pull MTD changes from David Woodhouse:
 - Artem's cleanup of the MTD API continues apace.
 - Fixes and improvements for ST FSMC and SuperH FLCTL NAND, amongst
   others.
 - More work on DiskOnChip G3, new driver for DiskOnChip G4.
 - Clean up debug/warning printks in JFFS2 to use pr_<level>.

Fix up various trivial conflicts, largely due to changes in calling
conventions for things like dmaengine_prep_slave_sg() (new inline
wrapper to hide new parameter, clashing with rewrite of previously last
parameter that used to be an 'append' flag, and is now a bitmap of
'unsigned long flags').

(Also some header file fallout - like so many merges this merge window -
and silly conflicts with sparse fixes)

* tag 'for-linus-3.4' of git://git.infradead.org/mtd-2.6: (120 commits)
  mtd: docg3 add protection against concurrency
  mtd: docg3 refactor cascade floors structure
  mtd: docg3 increase write/erase timeout
  mtd: docg3 fix inbound calculations
  mtd: nand: gpmi: fix function annotations
  mtd: phram: fix section mismatch for phram_setup
  mtd: unify initialization of erase_info->fail_addr
  mtd: support ONFI multi lun NAND
  mtd: sm_ftl: fix typo in major number.
  mtd: add device-tree support to spear_smi
  mtd: spear_smi: Remove default partition information from driver
  mtd: Add device-tree support to fsmc_nand
  mtd: fix section mismatch for doc_probe_device
  mtd: nand/fsmc: Remove sparse warnings and errors
  mtd: nand/fsmc: Add DMA support
  mtd: nand/fsmc: Access the NAND device word by word whenever possible
  mtd: nand/fsmc: Use dev_err to report error scenario
  mtd: nand/fsmc: Use devm routines
  mtd: nand/fsmc: Modify fsmc driver to accept nand timing parameters via platform
  mtd: fsmc_nand: add pm callbacks to support hibernation
  ...

21 files changed, 92 insertions, 47 deletions

diff --git a/drivers/mtd/maps/bfin-async-flash.c b/drivers/mtd/maps/bfin-async-flash.c
index 650126c361f1..ef5cde84a8b3 100644
--- a/drivers/mtd/maps/bfin-async-flash.c
+++ b/drivers/mtd/maps/bfin-async-flash.c
@@ -164,8 +164,8 @@ static int __devinit bfin_flash_probe(struct platform_device *pdev)
                 return -ENXIO;
         }
 
-        mtd_device_parse_register(state->mtd, part_probe_types, 0,
-                        pdata->parts, pdata->nr_parts);
+        mtd_device_parse_register(state->mtd, part_probe_types, NULL,
+                                  pdata->parts, pdata->nr_parts);
 
         platform_set_drvdata(pdev, state);
 
diff --git a/drivers/mtd/maps/dc21285.c b/drivers/mtd/maps/dc21285.c
index f43b365b848c..080f06053bd4 100644
--- a/drivers/mtd/maps/dc21285.c
+++ b/drivers/mtd/maps/dc21285.c
@@ -196,7 +196,7 @@ static int __init init_dc21285(void)
 
         dc21285_mtd->owner = THIS_MODULE;
 
-        mtd_device_parse_register(dc21285_mtd, probes, 0, NULL, 0);
+        mtd_device_parse_register(dc21285_mtd, probes, NULL, NULL, 0);
 
         if(machine_is_ebsa285()) {
                 /*
diff --git a/drivers/mtd/maps/gpio-addr-flash.c b/drivers/mtd/maps/gpio-addr-flash.c
index 33cce895859f..e4de96ba52b3 100644
--- a/drivers/mtd/maps/gpio-addr-flash.c
+++ b/drivers/mtd/maps/gpio-addr-flash.c
@@ -252,8 +252,8 @@ static int __devinit gpio_flash_probe(struct platform_device *pdev)
         }
 
 
-        mtd_device_parse_register(state->mtd, part_probe_types, 0,
-                        pdata->parts, pdata->nr_parts);
+        mtd_device_parse_register(state->mtd, part_probe_types, NULL,
+                                  pdata->parts, pdata->nr_parts);
 
         return 0;
 }
diff --git a/drivers/mtd/maps/h720x-flash.c b/drivers/mtd/maps/h720x-flash.c
index 49c14187fc66..8ed6cb4529d8 100644
--- a/drivers/mtd/maps/h720x-flash.c
+++ b/drivers/mtd/maps/h720x-flash.c
@@ -85,8 +85,8 @@ static int __init h720x_mtd_init(void)
         if (mymtd) {
                 mymtd->owner = THIS_MODULE;
 
-                mtd_device_parse_register(mymtd, NULL, 0,
-                                h720x_partitions, NUM_PARTITIONS);
+                mtd_device_parse_register(mymtd, NULL, NULL,
+                                          h720x_partitions, NUM_PARTITIONS);
                 return 0;
         }
 
diff --git a/drivers/mtd/maps/impa7.c b/drivers/mtd/maps/impa7.c
index f47aedb24366..834a06c56f56 100644
--- a/drivers/mtd/maps/impa7.c
+++ b/drivers/mtd/maps/impa7.c
@@ -91,7 +91,7 @@ static int __init init_impa7(void)
                 if (impa7_mtd[i]) {
                         impa7_mtd[i]->owner = THIS_MODULE;
                         devicesfound++;
-                        mtd_device_parse_register(impa7_mtd[i], NULL, 0,
+                        mtd_device_parse_register(impa7_mtd[i], NULL, NULL,
                                                   partitions,
                                                   ARRAY_SIZE(partitions));
                 }
diff --git a/drivers/mtd/maps/intel_vr_nor.c b/drivers/mtd/maps/intel_vr_nor.c
index 08c239604ee4..92e1f41634c7 100644
--- a/drivers/mtd/maps/intel_vr_nor.c
+++ b/drivers/mtd/maps/intel_vr_nor.c
@@ -72,7 +72,7 @@ static int __devinit vr_nor_init_partitions(struct vr_nor_mtd *p)
 {
         /* register the flash bank */
         /* partition the flash bank */
-        return mtd_device_parse_register(p->info, NULL, 0, NULL, 0);
+        return mtd_device_parse_register(p->info, NULL, NULL, NULL, 0);
 }
 
 static void __devexit vr_nor_destroy_mtd_setup(struct vr_nor_mtd *p)
diff --git a/drivers/mtd/maps/ixp2000.c b/drivers/mtd/maps/ixp2000.c
index fc7d4d0d9a4e..4a41ced0f710 100644
--- a/drivers/mtd/maps/ixp2000.c
+++ b/drivers/mtd/maps/ixp2000.c
@@ -226,7 +226,7 @@ static int ixp2000_flash_probe(struct platform_device *dev)
         }
         info->mtd->owner = THIS_MODULE;
 
-        err = mtd_device_parse_register(info->mtd, probes, 0, NULL, 0);
+        err = mtd_device_parse_register(info->mtd, probes, NULL, NULL, 0);
         if (err)
                 goto Error;
 
diff --git a/drivers/mtd/maps/ixp4xx.c b/drivers/mtd/maps/ixp4xx.c
index 8b5410162d70..e864fc6c58f9 100644
--- a/drivers/mtd/maps/ixp4xx.c
+++ b/drivers/mtd/maps/ixp4xx.c
@@ -182,6 +182,9 @@ static int ixp4xx_flash_probe(struct platform_device *dev)
 {
         struct flash_platform_data *plat = dev->dev.platform_data;
         struct ixp4xx_flash_info *info;
+        struct mtd_part_parser_data ppdata = {
+                .origin = dev->resource->start,
+        };
         int err = -1;
 
         if (!plat)
@@ -247,7 +250,7 @@ static int ixp4xx_flash_probe(struct platform_device *dev)
         /* Use the fast version */
         info->map.write = ixp4xx_write16;
 
-        err = mtd_device_parse_register(info->mtd, probes, dev->resource->start,
+        err = mtd_device_parse_register(info->mtd, probes, &ppdata,
                         plat->parts, plat->nr_parts);
         if (err) {
                 printk(KERN_ERR "Could not parse partitions\n");
diff --git a/drivers/mtd/maps/l440gx.c b/drivers/mtd/maps/l440gx.c
index dd0360ba2412..74bd98ee635f 100644
--- a/drivers/mtd/maps/l440gx.c
+++ b/drivers/mtd/maps/l440gx.c
@@ -27,17 +27,21 @@ static struct mtd_info *mymtd;
 
 
 /* Is this really the vpp port? */
+static DEFINE_SPINLOCK(l440gx_vpp_lock);
+static int l440gx_vpp_refcnt;
 static void l440gx_set_vpp(struct map_info *map, int vpp)
 {
-        unsigned long l;
+        unsigned long flags;
 
-        l = inl(VPP_PORT);
+        spin_lock_irqsave(&l440gx_vpp_lock, flags);
         if (vpp) {
-                l |= 1;
+                if (++l440gx_vpp_refcnt == 1)   /* first nested 'on' */
+                        outl(inl(VPP_PORT) | 1, VPP_PORT);
         } else {
-                l &= ~1;
+                if (--l440gx_vpp_refcnt == 0)   /* last nested 'off' */
+                        outl(inl(VPP_PORT) & ~1, VPP_PORT);
         }
-        outl(l, VPP_PORT);
+        spin_unlock_irqrestore(&l440gx_vpp_lock, flags);
 }
 
 static struct map_info l440gx_map = {
diff --git a/drivers/mtd/maps/lantiq-flash.c b/drivers/mtd/maps/lantiq-flash.c
index 7b889de9477b..b5401e355745 100644
--- a/drivers/mtd/maps/lantiq-flash.c
+++ b/drivers/mtd/maps/lantiq-flash.c
@@ -45,6 +45,7 @@ struct ltq_mtd {
 };
 
 static char ltq_map_name[] = "ltq_nor";
+static const char *ltq_probe_types[] __devinitconst = { "cmdlinepart", NULL };
 
 static map_word
 ltq_read16(struct map_info *map, unsigned long adr)
@@ -168,8 +169,9 @@ ltq_mtd_probe(struct platform_device *pdev)
         cfi->addr_unlock1 ^= 1;
         cfi->addr_unlock2 ^= 1;
 
-        err = mtd_device_parse_register(ltq_mtd->mtd, NULL, 0,
-                        ltq_mtd_data->parts, ltq_mtd_data->nr_parts);
+        err = mtd_device_parse_register(ltq_mtd->mtd, ltq_probe_types, NULL,
+                                        ltq_mtd_data->parts,
+                                        ltq_mtd_data->nr_parts);
         if (err) {
                 dev_err(&pdev->dev, "failed to add partitions\n");
                 goto err_destroy;
diff --git a/drivers/mtd/maps/latch-addr-flash.c b/drivers/mtd/maps/latch-addr-flash.c
index 8fed58e3a4a8..3c7ad17fca78 100644
--- a/drivers/mtd/maps/latch-addr-flash.c
+++ b/drivers/mtd/maps/latch-addr-flash.c
@@ -199,8 +199,9 @@ static int __devinit latch_addr_flash_probe(struct platform_device *dev)
         }
         info->mtd->owner = THIS_MODULE;
 
-        mtd_device_parse_register(info->mtd, NULL, 0,
-                        latch_addr_data->parts, latch_addr_data->nr_parts);
+        mtd_device_parse_register(info->mtd, NULL, NULL,
+                                  latch_addr_data->parts,
+                                  latch_addr_data->nr_parts);
         return 0;
 
 iounmap:
diff --git a/drivers/mtd/maps/pcmciamtd.c b/drivers/mtd/maps/pcmciamtd.c
index 0259cf583022..a3cfad392ed6 100644
--- a/drivers/mtd/maps/pcmciamtd.c
+++ b/drivers/mtd/maps/pcmciamtd.c
@@ -294,13 +294,24 @@ static void pcmcia_copy_to(struct map_info *map, unsigned long to, const void *f
 }
 
 
+static DEFINE_SPINLOCK(pcmcia_vpp_lock);
+static int pcmcia_vpp_refcnt;
 static void pcmciamtd_set_vpp(struct map_info *map, int on)
 {
         struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
         struct pcmcia_device *link = dev->p_dev;
+        unsigned long flags;
 
         pr_debug("dev = %p on = %d vpp = %d\n\n", dev, on, dev->vpp);
-        pcmcia_fixup_vpp(link, on ? dev->vpp : 0);
+        spin_lock_irqsave(&pcmcia_vpp_lock, flags);
+        if (on) {
+                if (++pcmcia_vpp_refcnt == 1)   /* first nested 'on' */
+                        pcmcia_fixup_vpp(link, dev->vpp);
+        } else {
+                if (--pcmcia_vpp_refcnt == 0)   /* last nested 'off' */
+                        pcmcia_fixup_vpp(link, 0);
+        }
+        spin_unlock_irqrestore(&pcmcia_vpp_lock, flags);
 }
 
 
diff --git a/drivers/mtd/maps/physmap.c b/drivers/mtd/maps/physmap.c
index abc562653b31..21b0b713cacb 100644
--- a/drivers/mtd/maps/physmap.c
+++ b/drivers/mtd/maps/physmap.c
@@ -27,6 +27,8 @@ struct physmap_flash_info {
         struct mtd_info         *mtd[MAX_RESOURCES];
         struct mtd_info         *cmtd;
         struct map_info         map[MAX_RESOURCES];
+        spinlock_t              vpp_lock;
+        int                     vpp_refcnt;
 };
 
 static int physmap_flash_remove(struct platform_device *dev)
@@ -63,12 +65,26 @@ static void physmap_set_vpp(struct map_info *map, int state)
 {
         struct platform_device *pdev;
         struct physmap_flash_data *physmap_data;
+        struct physmap_flash_info *info;
+        unsigned long flags;
 
         pdev = (struct platform_device *)map->map_priv_1;
         physmap_data = pdev->dev.platform_data;
 
-        if (physmap_data->set_vpp)
-                physmap_data->set_vpp(pdev, state);
+        if (!physmap_data->set_vpp)
+                return;
+
+        info = platform_get_drvdata(pdev);
+
+        spin_lock_irqsave(&info->vpp_lock, flags);
+        if (state) {
+                if (++info->vpp_refcnt == 1)    /* first nested 'on' */
+                        physmap_data->set_vpp(pdev, 1);
+        } else {
+                if (--info->vpp_refcnt == 0)    /* last nested 'off' */
+                        physmap_data->set_vpp(pdev, 0);
+        }
+        spin_unlock_irqrestore(&info->vpp_lock, flags);
 }
 
 static const char *rom_probe_types[] = {
@@ -172,9 +188,11 @@ static int physmap_flash_probe(struct platform_device *dev)
         if (err)
                 goto err_out;
 
+        spin_lock_init(&info->vpp_lock);
+
         part_types = physmap_data->part_probe_types ? : part_probe_types;
 
-        mtd_device_parse_register(info->cmtd, part_types, 0,
+        mtd_device_parse_register(info->cmtd, part_types, NULL,
                                   physmap_data->parts, physmap_data->nr_parts);
         return 0;
 
diff --git a/drivers/mtd/maps/plat-ram.c b/drivers/mtd/maps/plat-ram.c
index 45876d0e5b8e..891558de3ec1 100644
--- a/drivers/mtd/maps/plat-ram.c
+++ b/drivers/mtd/maps/plat-ram.c
@@ -222,8 +222,9 @@ static int platram_probe(struct platform_device *pdev)
         /* check to see if there are any available partitions, or wether
          * to add this device whole */
 
-        err = mtd_device_parse_register(info->mtd, pdata->probes, 0,
-                        pdata->partitions, pdata->nr_partitions);
+        err = mtd_device_parse_register(info->mtd, pdata->probes, NULL,
+                                        pdata->partitions,
+                                        pdata->nr_partitions);
         if (!err)
                 dev_info(&pdev->dev, "registered mtd device\n");
 
diff --git a/drivers/mtd/maps/pxa2xx-flash.c b/drivers/mtd/maps/pxa2xx-flash.c
index 436d121185b1..81884c277405 100644
--- a/drivers/mtd/maps/pxa2xx-flash.c
+++ b/drivers/mtd/maps/pxa2xx-flash.c
@@ -98,7 +98,8 @@ static int __devinit pxa2xx_flash_probe(struct platform_device *pdev)
         }
         info->mtd->owner = THIS_MODULE;
 
-        mtd_device_parse_register(info->mtd, probes, 0, flash->parts, flash->nr_parts);
+        mtd_device_parse_register(info->mtd, probes, NULL, flash->parts,
+                                  flash->nr_parts);
 
         platform_set_drvdata(pdev, info);
         return 0;
diff --git a/drivers/mtd/maps/rbtx4939-flash.c b/drivers/mtd/maps/rbtx4939-flash.c
index 3da63fc6f16e..6f52e1f288b6 100644
--- a/drivers/mtd/maps/rbtx4939-flash.c
+++ b/drivers/mtd/maps/rbtx4939-flash.c
@@ -102,8 +102,8 @@ static int rbtx4939_flash_probe(struct platform_device *dev)
         info->mtd->owner = THIS_MODULE;
         if (err)
                 goto err_out;
-        err = mtd_device_parse_register(info->mtd, NULL, 0,
-                        pdata->parts, pdata->nr_parts);
+        err = mtd_device_parse_register(info->mtd, NULL, NULL, pdata->parts,
+                                        pdata->nr_parts);
 
         if (err)
                 goto err_out;
diff --git a/drivers/mtd/maps/sa1100-flash.c b/drivers/mtd/maps/sa1100-flash.c
index cbc3b7867910..a675bdbcb0fe 100644
--- a/drivers/mtd/maps/sa1100-flash.c
+++ b/drivers/mtd/maps/sa1100-flash.c
@@ -36,10 +36,22 @@ struct sa_info {
         struct sa_subdev_info   subdev[0];
 };
 
+static DEFINE_SPINLOCK(sa1100_vpp_lock);
+static int sa1100_vpp_refcnt;
 static void sa1100_set_vpp(struct map_info *map, int on)
 {
         struct sa_subdev_info *subdev = container_of(map, struct sa_subdev_info, map);
-        subdev->plat->set_vpp(on);
+        unsigned long flags;
+
+        spin_lock_irqsave(&sa1100_vpp_lock, flags);
+        if (on) {
+                if (++sa1100_vpp_refcnt == 1)   /* first nested 'on' */
+                        subdev->plat->set_vpp(1);
+        } else {
+                if (--sa1100_vpp_refcnt == 0)   /* last nested 'off' */
+                        subdev->plat->set_vpp(0);
+        }
+        spin_unlock_irqrestore(&sa1100_vpp_lock, flags);
 }
 
 static void sa1100_destroy_subdev(struct sa_subdev_info *subdev)
@@ -252,8 +264,8 @@ static int __devinit sa1100_mtd_probe(struct platform_device *pdev)
         /*
          * Partition selection stuff.
          */
-        mtd_device_parse_register(info->mtd, part_probes, 0,
-                        plat->parts, plat->nr_parts);
+        mtd_device_parse_register(info->mtd, part_probes, NULL, plat->parts,
+                                  plat->nr_parts);
 
         platform_set_drvdata(pdev, info);
         err = 0;
diff --git a/drivers/mtd/maps/solutionengine.c b/drivers/mtd/maps/solutionengine.c
index 496c40704aff..9d900ada6708 100644
--- a/drivers/mtd/maps/solutionengine.c
+++ b/drivers/mtd/maps/solutionengine.c
@@ -92,8 +92,8 @@ static int __init init_soleng_maps(void)
                 mtd_device_register(eprom_mtd, NULL, 0);
         }
 
-        mtd_device_parse_register(flash_mtd, probes, 0,
-                        superh_se_partitions, NUM_PARTITIONS);
+        mtd_device_parse_register(flash_mtd, probes, NULL,
+                                  superh_se_partitions, NUM_PARTITIONS);
 
         return 0;
 }
diff --git a/drivers/mtd/maps/uclinux.c b/drivers/mtd/maps/uclinux.c
index 6793074f3f40..cfff454f628b 100644
--- a/drivers/mtd/maps/uclinux.c
+++ b/drivers/mtd/maps/uclinux.c
@@ -85,7 +85,7 @@ static int __init uclinux_mtd_init(void)
         }
 
         mtd->owner = THIS_MODULE;
-        mtd->point = uclinux_point;
+        mtd->_point = uclinux_point;
         mtd->priv = mapp;
 
         uclinux_ram_mtdinfo = mtd;
diff --git a/drivers/mtd/maps/vmu-flash.c b/drivers/mtd/maps/vmu-flash.c
index 3a04b078576a..2e2b0945edc7 100644
--- a/drivers/mtd/maps/vmu-flash.c
+++ b/drivers/mtd/maps/vmu-flash.c
@@ -360,9 +360,6 @@ static int vmu_flash_read(struct mtd_info *mtd, loff_t from, size_t len,
         int index = 0, retval, partition, leftover, numblocks;
         unsigned char cx;
 
-        if (len < 1)
-                return -EIO;
-
         mpart = mtd->priv;
         mdev = mpart->mdev;
         partition = mpart->partition;
@@ -434,11 +431,6 @@ static int vmu_flash_write(struct mtd_info *mtd, loff_t to, size_t len,
         partition = mpart->partition;
         card = maple_get_drvdata(mdev);
 
-        /* simple sanity checks */
-        if (len < 1) {
-                error = -EIO;
-                goto failed;
-        }
         numblocks = card->parts[partition].numblocks;
         if (to + len > numblocks * card->blocklen)
                 len = numblocks * card->blocklen - to;
@@ -544,9 +536,9 @@ static void vmu_queryblocks(struct mapleq *mq)
         mtd_cur->flags = MTD_WRITEABLE|MTD_NO_ERASE;
         mtd_cur->size = part_cur->numblocks * card->blocklen;
         mtd_cur->erasesize = card->blocklen;
-        mtd_cur->write = vmu_flash_write;
-        mtd_cur->read = vmu_flash_read;
-        mtd_cur->sync = vmu_flash_sync;
+        mtd_cur->_write = vmu_flash_write;
+        mtd_cur->_read = vmu_flash_read;
+        mtd_cur->_sync = vmu_flash_sync;
         mtd_cur->writesize = card->blocklen;
 
         mpart = kmalloc(sizeof(struct mdev_part), GFP_KERNEL);
diff --git a/drivers/mtd/maps/wr_sbc82xx_flash.c b/drivers/mtd/maps/wr_sbc82xx_flash.c
index aa7e0cb2893c..71b0ba797912 100644
--- a/drivers/mtd/maps/wr_sbc82xx_flash.c
+++ b/drivers/mtd/maps/wr_sbc82xx_flash.c
@@ -142,7 +142,7 @@ static int __init init_sbc82xx_flash(void)
                         nr_parts = ARRAY_SIZE(smallflash_parts);
                 }
 
-                mtd_device_parse_register(sbcmtd[i], part_probes, 0,
+                mtd_device_parse_register(sbcmtd[i], part_probes, NULL,
                                           defparts, nr_parts);
         }
         return 0;