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-rw-r--r--MAINTAINERS3
-rw-r--r--drivers/mtd/chips/Kconfig2
-rw-r--r--drivers/mtd/devices/block2mtd.c29
-rw-r--r--drivers/mtd/maps/Kconfig2
-rw-r--r--drivers/mtd/mtdcore.c4
-rw-r--r--drivers/mtd/mtdswap.c1
6 files changed, 27 insertions, 14 deletions
diff --git a/MAINTAINERS b/MAINTAINERS
index f4c590b22636..0c9fa0bd259a 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -8707,8 +8707,7 @@ S: Supported
Q: http://patchwork.ozlabs.org/project/linux-mtd/list/
C: irc://irc.oftc.net/mtd
T: git git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git cfi/next
-F: Documentation/devicetree/bindings/mtd/cypress,hyperflash.txt
-F: Documentation/devicetree/bindings/mtd/ti,am654-hbmc.txt
+F: Documentation/devicetree/bindings/mtd/ti,am654-hbmc.yaml
F: drivers/mtd/hyperbus/
F: include/linux/mtd/hyperbus.h
diff --git a/drivers/mtd/chips/Kconfig b/drivers/mtd/chips/Kconfig
index aef14990e5f7..19726ebd973d 100644
--- a/drivers/mtd/chips/Kconfig
+++ b/drivers/mtd/chips/Kconfig
@@ -55,12 +55,14 @@ choice
LITTLE_ENDIAN_BYTE, if the bytes are reversed.
config MTD_CFI_NOSWAP
+ depends on !ARCH_IXP4XX || CPU_BIG_ENDIAN
bool "NO"
config MTD_CFI_BE_BYTE_SWAP
bool "BIG_ENDIAN_BYTE"
config MTD_CFI_LE_BYTE_SWAP
+ depends on !ARCH_IXP4XX
bool "LITTLE_ENDIAN_BYTE"
endchoice
diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c
index c08721b11642..40d7211485da 100644
--- a/drivers/mtd/devices/block2mtd.c
+++ b/drivers/mtd/devices/block2mtd.c
@@ -31,6 +31,9 @@
#include <linux/slab.h>
#include <linux/major.h>
+/* Maximum number of comma-separated items in the 'block2mtd=' parameter */
+#define BLOCK2MTD_PARAM_MAX_COUNT 3
+
/* Info for the block device */
struct block2mtd_dev {
struct list_head list;
@@ -214,7 +217,7 @@ static void block2mtd_free_device(struct block2mtd_dev *dev)
static struct block2mtd_dev *add_device(char *devname, int erase_size,
- int timeout)
+ char *label, int timeout)
{
#ifndef MODULE
int i;
@@ -278,7 +281,10 @@ static struct block2mtd_dev *add_device(char *devname, int erase_size,
/* Setup the MTD structure */
/* make the name contain the block device in */
- name = kasprintf(GFP_KERNEL, "block2mtd: %s", devname);
+ if (!label)
+ name = kasprintf(GFP_KERNEL, "block2mtd: %s", devname);
+ else
+ name = kstrdup(label, GFP_KERNEL);
if (!name)
goto err_destroy_mutex;
@@ -305,7 +311,7 @@ static struct block2mtd_dev *add_device(char *devname, int erase_size,
list_add(&dev->list, &blkmtd_device_list);
pr_info("mtd%d: [%s] erase_size = %dKiB [%d]\n",
dev->mtd.index,
- dev->mtd.name + strlen("block2mtd: "),
+ label ? label : dev->mtd.name + strlen("block2mtd: "),
dev->mtd.erasesize >> 10, dev->mtd.erasesize);
return dev;
@@ -381,8 +387,9 @@ static int block2mtd_setup2(const char *val)
/* 80 for device, 12 for erase size, 80 for name, 8 for timeout */
char buf[80 + 12 + 80 + 8];
char *str = buf;
- char *token[2];
+ char *token[BLOCK2MTD_PARAM_MAX_COUNT];
char *name;
+ char *label = NULL;
size_t erase_size = PAGE_SIZE;
unsigned long timeout = MTD_DEFAULT_TIMEOUT;
int i, ret;
@@ -395,7 +402,7 @@ static int block2mtd_setup2(const char *val)
strcpy(str, val);
kill_final_newline(str);
- for (i = 0; i < 2; i++)
+ for (i = 0; i < BLOCK2MTD_PARAM_MAX_COUNT; i++)
token[i] = strsep(&str, ",");
if (str) {
@@ -414,7 +421,8 @@ static int block2mtd_setup2(const char *val)
return 0;
}
- if (token[1]) {
+ /* Optional argument when custom label is used */
+ if (token[1] && strlen(token[1])) {
ret = parse_num(&erase_size, token[1]);
if (ret) {
pr_err("illegal erase size\n");
@@ -422,7 +430,12 @@ static int block2mtd_setup2(const char *val)
}
}
- add_device(name, erase_size, timeout);
+ if (token[2]) {
+ label = token[2];
+ pr_info("Using custom MTD label '%s' for dev %s\n", label, name);
+ }
+
+ add_device(name, erase_size, label, timeout);
return 0;
}
@@ -456,7 +469,7 @@ static int block2mtd_setup(const char *val, const struct kernel_param *kp)
module_param_call(block2mtd, block2mtd_setup, NULL, NULL, 0200);
-MODULE_PARM_DESC(block2mtd, "Device to use. \"block2mtd=<dev>[,<erasesize>]\"");
+MODULE_PARM_DESC(block2mtd, "Device to use. \"block2mtd=<dev>[,[<erasesize>][,<label>]]\"");
static int __init block2mtd_init(void)
{
diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig
index aaa164b977fe..4945caa88345 100644
--- a/drivers/mtd/maps/Kconfig
+++ b/drivers/mtd/maps/Kconfig
@@ -302,7 +302,7 @@ config MTD_DC21285
config MTD_IXP4XX
tristate "CFI Flash device mapped on Intel IXP4xx based systems"
- depends on MTD_CFI && MTD_COMPLEX_MAPPINGS && ARCH_IXP4XX
+ depends on MTD_CFI && MTD_COMPLEX_MAPPINGS && ARCH_IXP4XX && MTD_CFI_ADV_OPTIONS
help
This enables MTD access to flash devices on platforms based
on Intel's IXP4xx family of network processors such as the
diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c
index c8fd7f758938..153229198947 100644
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -724,8 +724,6 @@ int del_mtd_device(struct mtd_info *mtd)
mutex_lock(&mtd_table_mutex);
- debugfs_remove_recursive(mtd->dbg.dfs_dir);
-
if (idr_find(&mtd_idr, mtd->index) != mtd) {
ret = -ENODEV;
goto out_error;
@@ -741,6 +739,8 @@ int del_mtd_device(struct mtd_info *mtd)
mtd->index, mtd->name, mtd->usecount);
ret = -EBUSY;
} else {
+ debugfs_remove_recursive(mtd->dbg.dfs_dir);
+
/* Try to remove the NVMEM provider */
if (mtd->nvmem)
nvmem_unregister(mtd->nvmem);
diff --git a/drivers/mtd/mtdswap.c b/drivers/mtd/mtdswap.c
index 7e309270ddd4..e86b04bc1d6b 100644
--- a/drivers/mtd/mtdswap.c
+++ b/drivers/mtd/mtdswap.c
@@ -716,7 +716,6 @@ retry:
return ret;
}
- eb = d->eb_data + *newblock / d->pages_per_eblk;
d->page_data[page] = *newblock;
d->revmap[oldblock] = PAGE_UNDEF;
eb = d->eb_data + oldblock / d->pages_per_eblk;