radio: wl128x: sleep inside of spinlock

Hi,

There is a copy_to_user() call inside of spin_lock_irqsave()/spin_unlock_irqrestore():

drivers/media/radio/wl128x/fmdrv_common.c:

    /* Copies RDS data from internal buffer to user buffer */
    u32 fmc_transfer_rds_from_internal_buff(struct fmdev *fmdev, struct file *file,
            u8 __user *buf, size_t count)
    {
        ...
        spin_lock_irqsave(&fmdev->rds_buff_lock, flags);
        ...
            if (copy_to_user(buf, &fmdev->rx.rds.buff[fmdev->rx.rds.rd_idx],
        ...
        spin_unlock_irqrestore(&fmdev->rds_buff_lock, flags);
        return ret;
    }

Vasiliy