diff options
Diffstat (limited to 'drivers/mtd/mtdchar.c')
| -rw-r--r-- | drivers/mtd/mtdchar.c | 60 |
1 files changed, 30 insertions, 30 deletions
diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index d1ffd24..6f04458 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -1,5 +1,5 @@ /* - * $Id: mtdchar.c,v 1.75 2005/11/06 10:04:37 gleixner Exp $ + * $Id: mtdchar.c,v 1.76 2005/11/07 11:14:20 gleixner Exp $ * * Character-device access to raw MTD devices. * @@ -28,7 +28,7 @@ static void mtd_notify_add(struct mtd_info* mtd) class_device_create(mtd_class, NULL, MKDEV(MTD_CHAR_MAJOR, mtd->index*2), NULL, "mtd%d", mtd->index); - + class_device_create(mtd_class, NULL, MKDEV(MTD_CHAR_MAJOR, mtd->index*2+1), NULL, "mtd%dro", mtd->index); @@ -108,23 +108,23 @@ static int mtd_open(struct inode *inode, struct file *file) return -EACCES; mtd = get_mtd_device(NULL, devnum); - + if (!mtd) return -ENODEV; - + if (MTD_ABSENT == mtd->type) { put_mtd_device(mtd); return -ENODEV; } file->private_data = mtd; - + /* You can't open it RW if it's not a writeable device */ if ((file->f_mode & 2) && !(mtd->flags & MTD_WRITEABLE)) { put_mtd_device(mtd); return -EACCES; } - + return 0; } /* mtd_open */ @@ -137,10 +137,10 @@ static int mtd_close(struct inode *inode, struct file *file) DEBUG(MTD_DEBUG_LEVEL0, "MTD_close\n"); mtd = TO_MTD(file); - + if (mtd->sync) mtd->sync(mtd); - + put_mtd_device(mtd); return 0; @@ -159,7 +159,7 @@ static ssize_t mtd_read(struct file *file, char __user *buf, size_t count,loff_t int ret=0; int len; char *kbuf; - + DEBUG(MTD_DEBUG_LEVEL0,"MTD_read\n"); if (*ppos + count > mtd->size) @@ -167,11 +167,11 @@ static ssize_t mtd_read(struct file *file, char __user *buf, size_t count,loff_t if (!count) return 0; - + /* FIXME: Use kiovec in 2.5 to lock down the user's buffers and pass them directly to the MTD functions */ while (count) { - if (count > MAX_KMALLOC_SIZE) + if (count > MAX_KMALLOC_SIZE) len = MAX_KMALLOC_SIZE; else len = count; @@ -179,7 +179,7 @@ static ssize_t mtd_read(struct file *file, char __user *buf, size_t count,loff_t kbuf=kmalloc(len,GFP_KERNEL); if (!kbuf) return -ENOMEM; - + switch (MTD_MODE(file)) { case MTD_MODE_OTP_FACT: ret = mtd->read_fact_prot_reg(mtd, *ppos, len, &retlen, kbuf); @@ -192,7 +192,7 @@ static ssize_t mtd_read(struct file *file, char __user *buf, size_t count,loff_t } /* Nand returns -EBADMSG on ecc errors, but it returns * the data. For our userspace tools it is important - * to dump areas with ecc errors ! + * to dump areas with ecc errors ! * Userspace software which accesses NAND this way * must be aware of the fact that it deals with NAND */ @@ -214,7 +214,7 @@ static ssize_t mtd_read(struct file *file, char __user *buf, size_t count,loff_t kfree(kbuf); return ret; } - + kfree(kbuf); } @@ -231,10 +231,10 @@ static ssize_t mtd_write(struct file *file, const char __user *buf, size_t count int len; DEBUG(MTD_DEBUG_LEVEL0,"MTD_write\n"); - + if (*ppos == mtd->size) return -ENOSPC; - + if (*ppos + count > mtd->size) count = mtd->size - *ppos; @@ -242,7 +242,7 @@ static ssize_t mtd_write(struct file *file, const char __user *buf, size_t count return 0; while (count) { - if (count > MAX_KMALLOC_SIZE) + if (count > MAX_KMALLOC_SIZE) len = MAX_KMALLOC_SIZE; else len = count; @@ -257,7 +257,7 @@ static ssize_t mtd_write(struct file *file, const char __user *buf, size_t count kfree(kbuf); return -EFAULT; } - + switch (MTD_MODE(file)) { case MTD_MODE_OTP_FACT: ret = -EROFS; @@ -282,7 +282,7 @@ static ssize_t mtd_write(struct file *file, const char __user *buf, size_t count kfree(kbuf); return ret; } - + kfree(kbuf); } @@ -306,7 +306,7 @@ static int mtd_ioctl(struct inode *inode, struct file *file, void __user *argp = (void __user *)arg; int ret = 0; u_long size; - + DEBUG(MTD_DEBUG_LEVEL0, "MTD_ioctl\n"); size = (cmd & IOCSIZE_MASK) >> IOCSIZE_SHIFT; @@ -318,7 +318,7 @@ static int mtd_ioctl(struct inode *inode, struct file *file, if (!access_ok(VERIFY_WRITE, argp, size)) return -EFAULT; } - + switch (cmd) { case MEMGETREGIONCOUNT: if (copy_to_user(argp, &(mtd->numeraseregions), sizeof(int))) @@ -370,11 +370,11 @@ static int mtd_ioctl(struct inode *inode, struct file *file, erase->mtd = mtd; erase->callback = mtdchar_erase_callback; erase->priv = (unsigned long)&waitq; - + /* FIXME: Allow INTERRUPTIBLE. Which means not having the wait_queue head on the stack. - + If the wq_head is on the stack, and we leave because we got interrupted, then the wq_head is no longer there when the @@ -402,13 +402,13 @@ static int mtd_ioctl(struct inode *inode, struct file *file, struct mtd_oob_buf buf; void *databuf; ssize_t retlen; - + if(!(file->f_mode & 2)) return -EPERM; if (copy_from_user(&buf, argp, sizeof(struct mtd_oob_buf))) return -EFAULT; - + if (buf.length > 0x4096) return -EINVAL; @@ -424,7 +424,7 @@ static int mtd_ioctl(struct inode *inode, struct file *file, databuf = kmalloc(buf.length, GFP_KERNEL); if (!databuf) return -ENOMEM; - + if (copy_from_user(databuf, buf.ptr, buf.length)) { kfree(databuf); return -EFAULT; @@ -448,7 +448,7 @@ static int mtd_ioctl(struct inode *inode, struct file *file, if (copy_from_user(&buf, argp, sizeof(struct mtd_oob_buf))) return -EFAULT; - + if (buf.length > 0x4096) return -EINVAL; @@ -464,14 +464,14 @@ static int mtd_ioctl(struct inode *inode, struct file *file, databuf = kmalloc(buf.length, GFP_KERNEL); if (!databuf) return -ENOMEM; - + ret = (mtd->read_oob)(mtd, buf.start, buf.length, &retlen, databuf); if (put_user(retlen, (uint32_t __user *)argp)) ret = -EFAULT; else if (retlen && copy_to_user(buf.ptr, databuf, retlen)) ret = -EFAULT; - + kfree(databuf); break; } @@ -521,7 +521,7 @@ static int mtd_ioctl(struct inode *inode, struct file *file, case MEMGETBADBLOCK: { loff_t offs; - + if (copy_from_user(&offs, argp, sizeof(loff_t))) return -EFAULT; if (!mtd->block_isbad) |
