summaryrefslogtreecommitdiffstats
path: root/drivers/mtd/mtdchar.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2013-05-09 10:15:46 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-05-09 10:15:46 -0700
commita637b0d45947df686979b85361ad5bfa9d19fdd3 (patch)
tree926207cdfbbde430d1e7b515f32fe1c740b15745 /drivers/mtd/mtdchar.c
parentf78089e87e576f91396a5d428d14b552178dfb17 (diff)
parentcdb6404cc53a166a1e3b0179bd8d1f4070beff41 (diff)
downloadlinux-a637b0d45947df686979b85361ad5bfa9d19fdd3.tar.gz
linux-a637b0d45947df686979b85361ad5bfa9d19fdd3.tar.bz2
linux-a637b0d45947df686979b85361ad5bfa9d19fdd3.zip
Merge tag 'for-linus-20130509' of git://git.infradead.org/linux-mtd
Pull MTD update from David Woodhouse: - Lots of cleanups from Artem, including deletion of some obsolete drivers - Support partitions larger than 4GiB in device tree - Support for new SPI chips * tag 'for-linus-20130509' of git://git.infradead.org/linux-mtd: (83 commits) mtd: omap2: Use module_platform_driver() mtd: bf5xx_nand: Use module_platform_driver() mtd: denali_dt: Remove redundant use of of_match_ptr mtd: denali_dt: Change return value to fix smatch warning mtd: denali_dt: Use module_platform_driver() mtd: denali_dt: Fix incorrect error check mtd: nand: subpage write support for hardware based ECC schemes mtd: omap2: use msecs_to_jiffies() mtd: nand_ids: use size macros mtd: nand_ids: improve LEGACY_ID_NAND macro a bit mtd: add 4 Toshiba nand chips for the full-id case mtd: add the support to parse out the full-id nand type mtd: add new fields to nand_flash_dev{} mtd: sh_flctl: Use of_match_ptr() macro mtd: gpio: Use of_match_ptr() macro mtd: gpio: Use devm_kzalloc() mtd: davinci_nand: Use of_match_ptr() mtd: dataflash: Use of_match_ptr() macro mtd: remove h720x flash support mtd: onenand: remove OneNAND simulator ...
Diffstat (limited to 'drivers/mtd/mtdchar.c')
-rw-r--r--drivers/mtd/mtdchar.c52
1 files changed, 22 insertions, 30 deletions
diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index dc571ebc1aa0..c719879284bd 100644
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -38,6 +38,8 @@
#include <asm/uaccess.h>
+#include "mtdcore.h"
+
static DEFINE_MUTEX(mtd_mutex);
/*
@@ -365,37 +367,35 @@ static void mtdchar_erase_callback (struct erase_info *instr)
wake_up((wait_queue_head_t *)instr->priv);
}
-#ifdef CONFIG_HAVE_MTD_OTP
static int otp_select_filemode(struct mtd_file_info *mfi, int mode)
{
struct mtd_info *mtd = mfi->mtd;
size_t retlen;
- int ret = 0;
-
- /*
- * Make a fake call to mtd_read_fact_prot_reg() to check if OTP
- * operations are supported.
- */
- if (mtd_read_fact_prot_reg(mtd, -1, 0, &retlen, NULL) == -EOPNOTSUPP)
- return -EOPNOTSUPP;
switch (mode) {
case MTD_OTP_FACTORY:
+ if (mtd_read_fact_prot_reg(mtd, -1, 0, &retlen, NULL) ==
+ -EOPNOTSUPP)
+ return -EOPNOTSUPP;
+
mfi->mode = MTD_FILE_MODE_OTP_FACTORY;
break;
case MTD_OTP_USER:
+ if (mtd_read_user_prot_reg(mtd, -1, 0, &retlen, NULL) ==
+ -EOPNOTSUPP)
+ return -EOPNOTSUPP;
+
mfi->mode = MTD_FILE_MODE_OTP_USER;
break;
- default:
- ret = -EINVAL;
case MTD_OTP_OFF:
+ mfi->mode = MTD_FILE_MODE_NORMAL;
break;
+ default:
+ return -EINVAL;
}
- return ret;
+
+ return 0;
}
-#else
-# define otp_select_filemode(f,m) -EOPNOTSUPP
-#endif
static int mtdchar_writeoob(struct file *file, struct mtd_info *mtd,
uint64_t start, uint32_t length, void __user *ptr,
@@ -888,7 +888,6 @@ static int mtdchar_ioctl(struct file *file, u_int cmd, u_long arg)
break;
}
-#ifdef CONFIG_HAVE_MTD_OTP
case OTPSELECT:
{
int mode;
@@ -944,7 +943,6 @@ static int mtdchar_ioctl(struct file *file, u_int cmd, u_long arg)
ret = mtd_lock_user_prot_reg(mtd, oinfo.start, oinfo.length);
break;
}
-#endif
/* This ioctl is being deprecated - it truncates the ECC layout */
case ECCGETLAYOUT:
@@ -1185,23 +1183,25 @@ static struct file_system_type mtd_inodefs_type = {
};
MODULE_ALIAS_FS("mtd_inodefs");
-static int __init init_mtdchar(void)
+int __init init_mtdchar(void)
{
int ret;
ret = __register_chrdev(MTD_CHAR_MAJOR, 0, 1 << MINORBITS,
"mtd", &mtd_fops);
if (ret < 0) {
- pr_notice("Can't allocate major number %d for "
- "Memory Technology Devices.\n", MTD_CHAR_MAJOR);
+ pr_err("Can't allocate major number %d for MTD\n",
+ MTD_CHAR_MAJOR);
return ret;
}
ret = register_filesystem(&mtd_inodefs_type);
if (ret) {
- pr_notice("Can't register mtd_inodefs filesystem: %d\n", ret);
+ pr_err("Can't register mtd_inodefs filesystem, error %d\n",
+ ret);
goto err_unregister_chdev;
}
+
return ret;
err_unregister_chdev:
@@ -1209,18 +1209,10 @@ err_unregister_chdev:
return ret;
}
-static void __exit cleanup_mtdchar(void)
+void __exit cleanup_mtdchar(void)
{
unregister_filesystem(&mtd_inodefs_type);
__unregister_chrdev(MTD_CHAR_MAJOR, 0, 1 << MINORBITS, "mtd");
}
-module_init(init_mtdchar);
-module_exit(cleanup_mtdchar);
-
-MODULE_ALIAS_CHARDEV_MAJOR(MTD_CHAR_MAJOR);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
-MODULE_DESCRIPTION("Direct character-device access to MTD devices");
MODULE_ALIAS_CHARDEV_MAJOR(MTD_CHAR_MAJOR);