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@@ -22,8 +22,9 @@ static loff_t
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proc_bus_zorro_lseek(struct file *file, loff_t off, int whence)
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{
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loff_t new = -1;
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+ struct inode *inode = file->f_path.dentry->d_inode;
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- lock_kernel();
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+ mutex_lock(&inode->i_mutex);
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switch (whence) {
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case 0:
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new = off;
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@@ -35,12 +36,12 @@ proc_bus_zorro_lseek(struct file *file, loff_t off, int whence)
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new = sizeof(struct ConfigDev) + off;
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break;
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}
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- if (new < 0 || new > sizeof(struct ConfigDev)) {
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- unlock_kernel();
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- return -EINVAL;
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- }
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- unlock_kernel();
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- return (file->f_pos = new);
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+ if (new < 0 || new > sizeof(struct ConfigDev))
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+ new = -EINVAL;
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+ else
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+ file->f_pos = new;
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+ mutex_unlock(&inode->i_mutex);
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+ return new;
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}
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static ssize_t
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@@ -67,7 +68,7 @@ proc_bus_zorro_read(struct file *file, char __user *buf, size_t nbytes, loff_t *
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cd.cd_BoardAddr = (void *)zorro_resource_start(z);
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cd.cd_BoardSize = zorro_resource_len(z);
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- if (copy_to_user(buf, &cd, nbytes))
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+ if (copy_to_user(buf, (void *)&cd + pos, nbytes))
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return -EFAULT;
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*ppos += nbytes;
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