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* [PATCH] MTD patch, including the latest modifications an offical upgrades for MTD
@ 2006-09-05  2:42 Luís Vitório Cargnini
  2006-10-19 14:05 ` Tony Lindgren
  0 siblings, 1 reply; 2+ messages in thread
From: Luís Vitório Cargnini @ 2006-09-05  2:42 UTC (permalink / raw)
  To: OMAP

[-- Attachment #1: Type: text/plain, Size: 934 bytes --]

Dear Colleagues,
I'm submitting the latest upgrades from MTD (generated by infrared)
to patch:
cd to <linux_dir>
patch -p1 < ../mtd.patch

official announce:
"...
Gitweb can give patches between specific points in the tree. To obtain
the full patch between Linus' official kernel tree and the current MTD
tree, use the following URL:
http://git.infradead.org/?p=mtd-2.6.git;a=commitdiff_plain;h=master;hp=linus
. This produces a full patch from the branch known as 'linus ' in the
git repository, which represents the last point at which Linus'
official kernel tree was merged into the MTD git tree. This should
apply correctly to the current  kernel, but beware that it will not
include changes which were already taken by Linus.
..."
i merged and it are working well for me



-- 
Thanks && Regards
Msc. Bsc. Luís Vitório Cargnini
IEEE Member
Mastering Degree student @ PUC-RS Electrical Engineer Faculty

[-- Attachment #2: mtd.patch --]
[-- Type: application/octet-stream, Size: 20019 bytes --]

--- a/drivers/mtd/chips/cfi_cmdset_0001.c
+++ b/drivers/mtd/chips/cfi_cmdset_0001.c
@@ -908,7 +908,7 @@ static void __xipram xip_enable(struct m
 
 static int __xipram xip_wait_for_operation(
 		struct map_info *map, struct flchip *chip,
-		unsigned long adr, int *chip_op_time )
+		unsigned long adr, unsigned int chip_op_time )
 {
 	struct cfi_private *cfi = map->fldrv_priv;
 	struct cfi_pri_intelext *cfip = cfi->cmdset_priv;
@@ -917,7 +917,7 @@ static int __xipram xip_wait_for_operati
 	flstate_t oldstate, newstate;
 
        	start = xip_currtime();
-	usec = *chip_op_time * 8;
+	usec = chip_op_time * 8;
 	if (usec == 0)
 		usec = 500000;
 	done = 0;
@@ -1027,8 +1027,8 @@ static int __xipram xip_wait_for_operati
 #define XIP_INVAL_CACHED_RANGE(map, from, size)  \
 	INVALIDATE_CACHED_RANGE(map, from, size)
 
-#define INVAL_CACHE_AND_WAIT(map, chip, cmd_adr, inval_adr, inval_len, p_usec) \
-	xip_wait_for_operation(map, chip, cmd_adr, p_usec)
+#define INVAL_CACHE_AND_WAIT(map, chip, cmd_adr, inval_adr, inval_len, usec) \
+	xip_wait_for_operation(map, chip, cmd_adr, usec)
 
 #else
 
@@ -1040,64 +1040,64 @@ static int __xipram xip_wait_for_operati
 static int inval_cache_and_wait_for_operation(
 		struct map_info *map, struct flchip *chip,
 		unsigned long cmd_adr, unsigned long inval_adr, int inval_len,
-		int *chip_op_time )
+		unsigned int chip_op_time)
 {
 	struct cfi_private *cfi = map->fldrv_priv;
 	map_word status, status_OK = CMD(0x80);
-	int z, chip_state = chip->state;
-	unsigned long timeo;
+	int chip_state = chip->state;
+	unsigned int timeo, sleep_time;
 
 	spin_unlock(chip->mutex);
 	if (inval_len)
 		INVALIDATE_CACHED_RANGE(map, inval_adr, inval_len);
-	if (*chip_op_time)
-		cfi_udelay(*chip_op_time);
 	spin_lock(chip->mutex);
 
-	timeo = *chip_op_time * 8 * HZ / 1000000;
-	if (timeo < HZ/2)
-		timeo = HZ/2;
-	timeo += jiffies;
+	/* set our timeout to 8 times the expected delay */
+	timeo = chip_op_time * 8;
+	if (!timeo)
+		timeo = 500000;
+	sleep_time = chip_op_time / 2;
 
-	z = 0;
 	for (;;) {
-		if (chip->state != chip_state) {
-			/* Someone's suspended the operation: sleep */
-			DECLARE_WAITQUEUE(wait, current);
-
-			set_current_state(TASK_UNINTERRUPTIBLE);
-			add_wait_queue(&chip->wq, &wait);
-			spin_unlock(chip->mutex);
-			schedule();
-			remove_wait_queue(&chip->wq, &wait);
-			timeo = jiffies + (HZ / 2); /* FIXME */
-			spin_lock(chip->mutex);
-			continue;
-		}
-
 		status = map_read(map, cmd_adr);
 		if (map_word_andequal(map, status, status_OK, status_OK))
 			break;
 
-		/* OK Still waiting */
-		if (time_after(jiffies, timeo)) {
+		if (!timeo) {
 			map_write(map, CMD(0x70), cmd_adr);
 			chip->state = FL_STATUS;
 			return -ETIME;
 		}
 
-		/* Latency issues. Drop the lock, wait a while and retry */
-		z++;
+		/* OK Still waiting. Drop the lock, wait a while and retry. */
 		spin_unlock(chip->mutex);
-		cfi_udelay(1);
+		if (sleep_time >= 1000000/HZ) {
+			/*
+			 * Half of the normal delay still remaining
+			 * can be performed with a sleeping delay instead
+			 * of busy waiting.
+			 */
+			msleep(sleep_time/1000);
+			timeo -= sleep_time;
+			sleep_time = 1000000/HZ;
+		} else {
+			udelay(1);
+			cond_resched();
+			timeo--;
+		}
 		spin_lock(chip->mutex);
-	}
 
-	if (!z) {
-		if (!--(*chip_op_time))
-			*chip_op_time = 1;
-	} else if (z > 1)
-		++(*chip_op_time);
+		if (chip->state != chip_state) {
+			/* Someone's suspended the operation: sleep */
+			DECLARE_WAITQUEUE(wait, current);
+			set_current_state(TASK_UNINTERRUPTIBLE);
+			add_wait_queue(&chip->wq, &wait);
+			spin_unlock(chip->mutex);
+			schedule();
+			remove_wait_queue(&chip->wq, &wait);
+			spin_lock(chip->mutex);
+		}
+	}
 
 	/* Done and happy. */
  	chip->state = FL_STATUS;
@@ -1107,8 +1107,7 @@ static int inval_cache_and_wait_for_oper
 #endif
 
 #define WAIT_TIMEOUT(map, chip, adr, udelay) \
-	({ int __udelay = (udelay); \
-	   INVAL_CACHE_AND_WAIT(map, chip, adr, 0, 0, &__udelay); })
+	INVAL_CACHE_AND_WAIT(map, chip, adr, 0, 0, udelay);
 
 
 static int do_point_onechip (struct map_info *map, struct flchip *chip, loff_t adr, size_t len)
@@ -1332,7 +1331,7 @@ static int __xipram do_write_oneword(str
 
 	ret = INVAL_CACHE_AND_WAIT(map, chip, adr,
 				   adr, map_bankwidth(map),
-				   &chip->word_write_time);
+				   chip->word_write_time);
 	if (ret) {
 		xip_enable(map, chip, adr);
 		printk(KERN_ERR "%s: word write error (status timeout)\n", map->name);
@@ -1569,7 +1568,7 @@ static int __xipram do_write_buffer(stru
 
 	ret = INVAL_CACHE_AND_WAIT(map, chip, cmd_adr,
 				   adr, len,
-				   &chip->buffer_write_time);
+				   chip->buffer_write_time);
 	if (ret) {
 		map_write(map, CMD(0x70), cmd_adr);
 		chip->state = FL_STATUS;
@@ -1704,7 +1703,7 @@ static int __xipram do_erase_oneblock(st
 
 	ret = INVAL_CACHE_AND_WAIT(map, chip, adr,
 				   adr, len,
-				   &chip->erase_time);
+				   chip->erase_time);
 	if (ret) {
 		map_write(map, CMD(0x70), adr);
 		chip->state = FL_STATUS;
--- a/drivers/mtd/chips/cfi_cmdset_0002.c
+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
@@ -45,9 +45,11 @@
 #define MAX_WORD_RETRIES 3
 
 #define MANUFACTURER_AMD	0x0001
+#define MANUFACTURER_ATMEL	0x001F
 #define MANUFACTURER_SST	0x00BF
 #define SST49LF004B	        0x0060
 #define SST49LF008A		0x005a
+#define AT49BV6416		0x00d6
 
 static int cfi_amdstd_read (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
 static int cfi_amdstd_write_words(struct mtd_info *, loff_t, size_t, size_t *, const u_char *);
@@ -68,6 +70,9 @@ static int get_chip(struct map_info *map
 static void put_chip(struct map_info *map, struct flchip *chip, unsigned long adr);
 #include "fwh_lock.h"
 
+static int cfi_atmel_lock(struct mtd_info *mtd, loff_t ofs, size_t len);
+static int cfi_atmel_unlock(struct mtd_info *mtd, loff_t ofs, size_t len);
+
 static struct mtd_chip_driver cfi_amdstd_chipdrv = {
 	.probe		= NULL, /* Not usable directly */
 	.destroy	= cfi_amdstd_destroy,
@@ -161,6 +166,26 @@ static void fixup_use_write_buffers(stru
 	}
 }
 
+/* Atmel chips don't use the same PRI format as AMD chips */
+static void fixup_convert_atmel_pri(struct mtd_info *mtd, void *param)
+{
+	struct map_info *map = mtd->priv;
+	struct cfi_private *cfi = map->fldrv_priv;
+	struct cfi_pri_amdstd *extp = cfi->cmdset_priv;
+	struct cfi_pri_atmel atmel_pri;
+
+	memcpy(&atmel_pri, extp, sizeof(atmel_pri));
+	memset(extp + 5, 0, sizeof(*extp) - 5);
+
+	if (atmel_pri.Features & 0x02)
+		extp->EraseSuspend = 2;
+
+	if (atmel_pri.BottomBoot)
+		extp->TopBottom = 2;
+	else
+		extp->TopBottom = 3;
+}
+
 static void fixup_use_secsi(struct mtd_info *mtd, void *param)
 {
 	/* Setup for chips with a secsi area */
@@ -179,6 +204,16 @@ static void fixup_use_erase_chip(struct 
 
 }
 
+/*
+ * Some Atmel chips (e.g. the AT49BV6416) power-up with all sectors
+ * locked by default.
+ */
+static void fixup_use_atmel_lock(struct mtd_info *mtd, void *param)
+{
+	mtd->lock = cfi_atmel_lock;
+	mtd->unlock = cfi_atmel_unlock;
+}
+
 static struct cfi_fixup cfi_fixup_table[] = {
 #ifdef AMD_BOOTLOC_BUG
 	{ CFI_MFR_AMD, CFI_ID_ANY, fixup_amd_bootblock, NULL },
@@ -192,6 +227,7 @@ static struct cfi_fixup cfi_fixup_table[
 #if !FORCE_WORD_WRITE
 	{ CFI_MFR_ANY, CFI_ID_ANY, fixup_use_write_buffers, NULL, },
 #endif
+	{ CFI_MFR_ATMEL, CFI_ID_ANY, fixup_convert_atmel_pri, NULL },
 	{ 0, 0, NULL, NULL }
 };
 static struct cfi_fixup jedec_fixup_table[] = {
@@ -207,6 +243,7 @@ static struct cfi_fixup fixup_table[] = 
 	 * we know that is the case.
 	 */
 	{ CFI_MFR_ANY, CFI_ID_ANY, fixup_use_erase_chip, NULL },
+	{ CFI_MFR_ATMEL, AT49BV6416, fixup_use_atmel_lock, NULL },
 	{ 0, 0, NULL, NULL }
 };
 
@@ -1607,6 +1644,80 @@ static int cfi_amdstd_erase_chip(struct 
 	return 0;
 }
 
+static int do_atmel_lock(struct map_info *map, struct flchip *chip,
+			 unsigned long adr, int len, void *thunk)
+{
+	struct cfi_private *cfi = map->fldrv_priv;
+	int ret;
+
+	spin_lock(chip->mutex);
+	ret = get_chip(map, chip, adr + chip->start, FL_LOCKING);
+	if (ret)
+		goto out_unlock;
+	chip->state = FL_LOCKING;
+
+	DEBUG(MTD_DEBUG_LEVEL3, "MTD %s(): LOCK 0x%08lx len %d\n",
+	      __func__, adr, len);
+
+	cfi_send_gen_cmd(0xAA, cfi->addr_unlock1, chip->start, map, cfi,
+			 cfi->device_type, NULL);
+	cfi_send_gen_cmd(0x55, cfi->addr_unlock2, chip->start, map, cfi,
+			 cfi->device_type, NULL);
+	cfi_send_gen_cmd(0x80, cfi->addr_unlock1, chip->start, map, cfi,
+			 cfi->device_type, NULL);
+	cfi_send_gen_cmd(0xAA, cfi->addr_unlock1, chip->start, map, cfi,
+			 cfi->device_type, NULL);
+	cfi_send_gen_cmd(0x55, cfi->addr_unlock2, chip->start, map, cfi,
+			 cfi->device_type, NULL);
+	map_write(map, CMD(0x40), chip->start + adr);
+
+	chip->state = FL_READY;
+	put_chip(map, chip, adr + chip->start);
+	ret = 0;
+
+out_unlock:
+	spin_unlock(chip->mutex);
+	return ret;
+}
+
+static int do_atmel_unlock(struct map_info *map, struct flchip *chip,
+			   unsigned long adr, int len, void *thunk)
+{
+	struct cfi_private *cfi = map->fldrv_priv;
+	int ret;
+
+	spin_lock(chip->mutex);
+	ret = get_chip(map, chip, adr + chip->start, FL_UNLOCKING);
+	if (ret)
+		goto out_unlock;
+	chip->state = FL_UNLOCKING;
+
+	DEBUG(MTD_DEBUG_LEVEL3, "MTD %s(): LOCK 0x%08lx len %d\n",
+	      __func__, adr, len);
+
+	cfi_send_gen_cmd(0xAA, cfi->addr_unlock1, chip->start, map, cfi,
+			 cfi->device_type, NULL);
+	map_write(map, CMD(0x70), adr);
+
+	chip->state = FL_READY;
+	put_chip(map, chip, adr + chip->start);
+	ret = 0;
+
+out_unlock:
+	spin_unlock(chip->mutex);
+	return ret;
+}
+
+static int cfi_atmel_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
+{
+	return cfi_varsize_frob(mtd, do_atmel_lock, ofs, len, NULL);
+}
+
+static int cfi_atmel_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
+{
+	return cfi_varsize_frob(mtd, do_atmel_unlock, ofs, len, NULL);
+}
+
 
 static void cfi_amdstd_sync (struct mtd_info *mtd)
 {
--- a/drivers/mtd/chips/jedec_probe.c
+++ b/drivers/mtd/chips/jedec_probe.c
@@ -111,6 +111,7 @@
 #define MX29LV040C	0x004F
 #define MX29LV160T	0x22C4
 #define MX29LV160B	0x2249
+#define MX29F040	0x00A4
 #define MX29F016	0x00AD
 #define MX29F002T	0x00B0
 #define MX29F004T	0x0045
@@ -1172,6 +1173,19 @@ static const struct amd_flash_info jedec
 		}
 	}, {
 		.mfr_id		= MANUFACTURER_MACRONIX,
+		.dev_id		= MX29F040,
+		.name		= "Macronix MX29F040",
+		.uaddr		= {
+			[0] = MTD_UADDR_0x0555_0x02AA /* x8 */
+		},
+		.DevSize	= SIZE_512KiB,
+		.CmdSet		= P_ID_AMD_STD,
+		.NumEraseRegions= 1,
+		.regions	= {
+			ERASEINFO(0x10000,8),
+		}
+        }, {
+		.mfr_id		= MANUFACTURER_MACRONIX,
 		.dev_id		= MX29F016,
 		.name		= "Macronix MX29F016",
 		.uaddr		= {
--- a/drivers/mtd/devices/block2mtd.c
+++ b/drivers/mtd/devices/block2mtd.c
@@ -18,6 +18,7 @@
 #include <linux/mtd/mtd.h>
 #include <linux/buffer_head.h>
 #include <linux/mutex.h>
+#include <linux/mount.h>
 
 #define VERSION "$Revision: 1.30 $"
 
@@ -236,6 +237,8 @@ static int _block2mtd_write(struct block
 	}
 	return 0;
 }
+
+
 static int block2mtd_write(struct mtd_info *mtd, loff_t to, size_t len,
 		size_t *retlen, const u_char *buf)
 {
@@ -299,6 +302,19 @@ static struct block2mtd_dev *add_device(
 
 	/* Get a handle on the device */
 	bdev = open_bdev_excl(devname, O_RDWR, NULL);
+#ifndef MODULE
+	if (IS_ERR(bdev)) {
+
+		/* We might not have rootfs mounted at this point. Try
+		   to resolve the device name by other means. */
+
+		dev_t dev = name_to_dev_t(devname);
+		if (dev != 0) {
+			bdev = open_by_devnum(dev, FMODE_WRITE | FMODE_READ);
+		}
+	}
+#endif
+
 	if (IS_ERR(bdev)) {
 		ERROR("error: cannot open device %s", devname);
 		goto devinit_err;
@@ -393,26 +409,6 @@ static int parse_num(size_t *num, const 
 }
 
 
-static int parse_name(char **pname, const char *token, size_t limit)
-{
-	size_t len;
-	char *name;
-
-	len = strlen(token) + 1;
-	if (len > limit)
-		return -ENOSPC;
-
-	name = kmalloc(len, GFP_KERNEL);
-	if (!name)
-		return -ENOMEM;
-
-	strcpy(name, token);
-
-	*pname = name;
-	return 0;
-}
-
-
 static inline void kill_final_newline(char *str)
 {
 	char *newline = strrchr(str, '\n');
@@ -426,9 +422,15 @@ static inline void kill_final_newline(ch
 	return 0;				\
 } while (0)
 
-static int block2mtd_setup(const char *val, struct kernel_param *kp)
+#ifndef MODULE
+static int block2mtd_init_called = 0;
+static __initdata char block2mtd_paramline[80 + 12]; /* 80 for device, 12 for erase size */
+#endif
+
+
+static int block2mtd_setup2(const char *val)
 {
-	char buf[80+12]; /* 80 for device, 12 for erase size */
+	char buf[80 + 12]; /* 80 for device, 12 for erase size */
 	char *str = buf;
 	char *token[2];
 	char *name;
@@ -450,13 +452,9 @@ static int block2mtd_setup(const char *v
 	if (!token[0])
 		parse_err("no argument");
 
-	ret = parse_name(&name, token[0], 80);
-	if (ret == -ENOMEM)
-		parse_err("out of memory");
-	if (ret == -ENOSPC)
-		parse_err("name too long");
-	if (ret)
-		return 0;
+	name = token[0];
+	if (strlen(name) + 1 > 80)
+		parse_err("device name too long");
 
 	if (token[1]) {
 		ret = parse_num(&erase_size, token[1]);
@@ -472,13 +470,48 @@ static int block2mtd_setup(const char *v
 }
 
 
+static int block2mtd_setup(const char *val, struct kernel_param *kp)
+{
+#ifdef MODULE
+	return block2mtd_setup2(val);
+#else
+	/* If more parameters are later passed in via
+	   /sys/module/block2mtd/parameters/block2mtd
+	   and block2mtd_init() has already been called,
+	   we can parse the argument now. */
+
+	if (block2mtd_init_called)
+		return block2mtd_setup2(val);
+
+	/* During early boot stage, we only save the parameters
+	   here. We must parse them later: if the param passed
+	   from kernel boot command line, block2mtd_setup() is
+	   called so early that it is not possible to resolve
+	   the device (even kmalloc() fails). Deter that work to
+	   block2mtd_setup2(). */
+
+	strlcpy(block2mtd_paramline, val, sizeof(block2mtd_paramline));
+
+	return 0;
+#endif
+}
+
+
 module_param_call(block2mtd, block2mtd_setup, NULL, NULL, 0200);
 MODULE_PARM_DESC(block2mtd, "Device to use. \"block2mtd=<dev>[,<erasesize>]\"");
 
 static int __init block2mtd_init(void)
 {
+	int ret = 0;
 	INFO("version " VERSION);
-	return 0;
+
+#ifndef MODULE
+	if (strlen(block2mtd_paramline))
+		ret = block2mtd_setup2(block2mtd_paramline);
+	block2mtd_init_called = 1;
+#endif
+
+	return ret;
 }
 
 
--- a/drivers/mtd/devices/pmc551.c
+++ b/drivers/mtd/devices/pmc551.c
@@ -99,10 +99,6 @@
 #include <asm/system.h>
 #include <linux/pci.h>
 
-#ifndef CONFIG_PCI
-#error Enable PCI in your kernel config
-#endif
-
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/pmc551.h>
 #include <linux/mtd/compatmac.h>
--- a/drivers/mtd/maps/Kconfig
+++ b/drivers/mtd/maps/Kconfig
@@ -13,13 +13,13 @@ config MTD_COMPLEX_MAPPINGS
 
 config MTD_PHYSMAP
 	tristate "CFI Flash device in physical memory map"
-	depends on MTD_CFI
+	depends on MTD_CFI || MTD_JEDECPROBE || MTD_ROM
 	help
-	  This provides a 'mapping' driver which allows the CFI probe and
-	  command set driver code to communicate with flash chips which
-	  are mapped physically into the CPU's memory. You will need to
-	  configure the physical address and size of the flash chips on
-	  your particular board as well as the bus width, either statically
+	  This provides a 'mapping' driver which allows the NOR Flash and
+	  ROM driver code to communicate with chips which are mapped
+	  physically into the CPU's memory. You will need to configure
+	  the physical address and size of the flash chips on your
+	  particular board as well as the bus width, either statically
 	  with config options or at run-time.
 
 config MTD_PHYSMAP_START
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -11,7 +11,7 @@ config MTD_NAND
 	help
 	  This enables support for accessing all type of NAND flash
 	  devices. For further information see
-	  <http://www.linux-mtd.infradead.org/tech/nand.html>.
+	  <http://www.linux-mtd.infradead.org/doc/nand.html>.
 
 config MTD_NAND_VERIFY_WRITE
 	bool "Verify NAND page writes"
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -1204,7 +1204,7 @@ static int nand_write_oob_syndrome(struc
 		pos = steps * (eccsize + chunk);
 		steps = 0;
 	} else
-		pos = eccsize + chunk;
+		pos = eccsize;
 
 	chip->cmdfunc(mtd, NAND_CMD_SEQIN, pos, page);
 	for (i = 0; i < steps; i++) {
@@ -1567,7 +1567,7 @@ static uint8_t *nand_fill_oob(struct nan
 				bytes = min_t(size_t, len, free->length);
 				boffs = free->offset;
 			}
-			memcpy(chip->oob_poi + woffs, oob, bytes);
+			memcpy(chip->oob_poi + boffs, oob, bytes);
 			oob += bytes;
 		}
 		return oob;
@@ -2224,7 +2224,7 @@ static struct nand_flash_dev *nand_get_f
 	}
 
 	/* Try to identify manufacturer */
-	for (maf_idx = 0; nand_manuf_ids[maf_idx].id != 0x0; maf_id++) {
+	for (maf_idx = 0; nand_manuf_ids[maf_idx].id != 0x0; maf_idx++) {
 		if (nand_manuf_ids[maf_idx].id == *maf_id)
 			break;
 	}
--- a/drivers/mtd/nand/sharpsl.c
+++ b/drivers/mtd/nand/sharpsl.c
@@ -78,7 +78,7 @@ static struct mtd_partition sharpsl_nand
 /*
  *	hardware specific access to control-lines
  *	ctrl:
- *	NAND_CNE: bit 0 -> bit 0 & 4
+ *	NAND_CNE: bit 0 -> ! bit 0 & 4
  *	NAND_CLE: bit 1 -> bit 1
  *	NAND_ALE: bit 2 -> bit 2
  *
@@ -92,7 +92,10 @@ static void sharpsl_nand_hwcontrol(struc
 		unsigned char bits = ctrl & 0x07;
 
 		bits |= (ctrl & 0x01) << 4;
-		writeb((readb(FLASHCTL) & 0x17) | bits, FLASHCTL);
+
+		bits ^= 0x11;
+
+		writeb((readb(FLASHCTL) & ~0x17) | bits, FLASHCTL);
 	}
 
 	if (cmd != NAND_CMD_NONE)
--- a/fs/jffs2/nodelist.c
+++ b/fs/jffs2/nodelist.c
@@ -21,6 +21,9 @@
 #include <linux/pagemap.h>
 #include "nodelist.h"
 
+static void jffs2_obsolete_node_frag(struct jffs2_sb_info *c,
+				     struct jffs2_node_frag *this);
+
 void jffs2_add_fd_to_list(struct jffs2_sb_info *c, struct jffs2_full_dirent *new, struct jffs2_full_dirent **list)
 {
 	struct jffs2_full_dirent **prev = list;
@@ -87,7 +90,8 @@ void jffs2_truncate_fragtree(struct jffs
 	}
 }
 
-void jffs2_obsolete_node_frag(struct jffs2_sb_info *c, struct jffs2_node_frag *this)
+static void jffs2_obsolete_node_frag(struct jffs2_sb_info *c,
+				     struct jffs2_node_frag *this)
 {
 	if (this->node) {
 		this->node->frags--;
--- a/fs/jffs2/nodelist.h
+++ b/fs/jffs2/nodelist.h
@@ -334,7 +334,6 @@ void jffs2_kill_fragtree(struct rb_root 
 struct rb_node *rb_next(struct rb_node *);
 struct rb_node *rb_prev(struct rb_node *);
 void rb_replace_node(struct rb_node *victim, struct rb_node *new, struct rb_root *root);
-void jffs2_obsolete_node_frag(struct jffs2_sb_info *c, struct jffs2_node_frag *this);
 int jffs2_add_full_dnode_to_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_full_dnode *fn);
 void jffs2_truncate_fragtree (struct jffs2_sb_info *c, struct rb_root *list, uint32_t size);
 int jffs2_add_older_frag_to_fragtree(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_tmp_dnode_info *tn);
--- a/fs/jffs2/xattr.c
+++ b/fs/jffs2/xattr.c
@@ -1215,7 +1215,6 @@ int jffs2_garbage_collect_xattr_datum(st
 	rc = jffs2_reserve_space_gc(c, totlen, &length, JFFS2_SUMMARY_XATTR_SIZE);
 	if (rc) {
 		JFFS2_WARNING("jffs2_reserve_space_gc()=%d, request=%u\n", rc, totlen);
-		rc = rc ? rc : -EBADFD;
 		goto out;
 	}
 	rc = save_xattr_datum(c, xd);
--- a/include/linux/mtd/cfi.h
+++ b/include/linux/mtd/cfi.h
@@ -199,6 +199,18 @@ struct cfi_pri_amdstd {
 	uint8_t  TopBottom;
 } __attribute__((packed));
 
+/* Vendor-Specific PRI for Atmel chips (command set 0x0002) */
+
+struct cfi_pri_atmel {
+	uint8_t pri[3];
+	uint8_t MajorVersion;
+	uint8_t MinorVersion;
+	uint8_t Features;
+	uint8_t BottomBoot;
+	uint8_t BurstMode;
+	uint8_t PageMode;
+} __attribute__((packed));
+
 struct cfi_pri_query {
 	uint8_t  NumFields;
 	uint32_t ProtField[1]; /* Not host ordered */
@@ -464,6 +476,7 @@ struct cfi_fixup {
 #define CFI_ID_ANY  0xffff
 
 #define CFI_MFR_AMD 0x0001
+#define CFI_MFR_ATMEL 0x001F
 #define CFI_MFR_ST  0x0020 	/* STMicroelectronics */
 
 void cfi_fixup(struct mtd_info *mtd, struct cfi_fixup* fixups);

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2006-09-05  2:42 [PATCH] MTD patch, including the latest modifications an offical upgrades for MTD Luís Vitório Cargnini
2006-10-19 14:05 ` Tony Lindgren

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