dma: i.MX31 IPU DMA robustness improvements

[safe/jmp/linux-2.6] / drivers / mtd / mtdchar.c

diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index 1c74762..e9ec59e 100644 (file)
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -96,7 +96,7 @@ static int mtd_open(struct inode *inode, struct file *file)
                return -ENODEV;
 
        /* You can't open the RO devices RW */
-       if ((file->f_mode & 2) && (minor & 1))
+       if ((file->f_mode & FMODE_WRITE) && (minor & 1))
                return -EACCES;
 
        lock_kernel();
@@ -114,7 +114,7 @@ static int mtd_open(struct inode *inode, struct file *file)
        }
 
        /* You can't open it RW if it's not a writeable device */
-       if ((file->f_mode & 2) && !(mtd->flags & MTD_WRITEABLE)) {
+       if ((file->f_mode & FMODE_WRITE) && !(mtd->flags & MTD_WRITEABLE)) {
                put_mtd_device(mtd);
                ret = -EACCES;
                goto out;
@@ -144,7 +144,7 @@ static int mtd_close(struct inode *inode, struct file *file)
        DEBUG(MTD_DEBUG_LEVEL0, "MTD_close\n");
 
        /* Only sync if opened RW */
-       if ((file->f_mode & 2) && mtd->sync)
+       if ((file->f_mode & FMODE_WRITE) && mtd->sync)
                mtd->sync(mtd);
 
        put_mtd_device(mtd);
@@ -348,7 +348,7 @@ static void mtdchar_erase_callback (struct erase_info *instr)
        wake_up((wait_queue_head_t *)instr->priv);
 }
 
-#if defined(CONFIG_MTD_OTP) || defined(CONFIG_MTD_ONENAND_OTP)
+#ifdef CONFIG_HAVE_MTD_OTP
 static int otp_select_filemode(struct mtd_file_info *mfi, int mode)
 {
        struct mtd_info *mtd = mfi->mtd;
@@ -443,23 +443,27 @@ static int mtd_ioctl(struct inode *inode, struct file *file,
        {
                struct erase_info *erase;
 
-               if(!(file->f_mode & 2))
+               if(!(file->f_mode & FMODE_WRITE))
                        return -EPERM;
 
                erase=kzalloc(sizeof(struct erase_info),GFP_KERNEL);
                if (!erase)
                        ret = -ENOMEM;
                else {
+                       struct erase_info_user einfo;
+
                        wait_queue_head_t waitq;
                        DECLARE_WAITQUEUE(wait, current);
 
                        init_waitqueue_head(&waitq);
 
-                       if (copy_from_user(&erase->addr, argp,
+                       if (copy_from_user(&einfo, argp,
                                    sizeof(struct erase_info_user))) {
                                kfree(erase);
                                return -EFAULT;
                        }
+                       erase->addr = einfo.start;
+                       erase->len = einfo.length;
                        erase->mtd = mtd;
                        erase->callback = mtdchar_erase_callback;
                        erase->priv = (unsigned long)&waitq;
@@ -497,7 +501,7 @@ static int mtd_ioctl(struct inode *inode, struct file *file,
                struct mtd_oob_buf __user *user_buf = argp;
                uint32_t retlen;
 
-               if(!(file->f_mode & 2))
+               if(!(file->f_mode & FMODE_WRITE))
                        return -EPERM;
 
                if (copy_from_user(&buf, argp, sizeof(struct mtd_oob_buf)))
@@ -665,7 +669,7 @@ static int mtd_ioctl(struct inode *inode, struct file *file,
                break;
        }
 
-#if defined(CONFIG_MTD_OTP) || defined(CONFIG_MTD_ONENAND_OTP)
+#ifdef CONFIG_HAVE_MTD_OTP
        case OTPSELECT:
        {
                int mode;