diff options
Diffstat (limited to 'drivers/misc/carma/carma-fpga-program.c')
| -rw-r--r-- | drivers/misc/carma/carma-fpga-program.c | 30 |
1 files changed, 3 insertions, 27 deletions
diff --git a/drivers/misc/carma/carma-fpga-program.c b/drivers/misc/carma/carma-fpga-program.c index 7be89832db19..7e97e53f9ff2 100644 --- a/drivers/misc/carma/carma-fpga-program.c +++ b/drivers/misc/carma/carma-fpga-program.c @@ -749,13 +749,8 @@ static ssize_t fpga_read(struct file *filp, char __user *buf, size_t count, loff_t *f_pos) { struct fpga_dev *priv = filp->private_data; - - count = min_t(size_t, priv->bytes - *f_pos, count); - if (copy_to_user(buf, priv->vb.vaddr + *f_pos, count)) - return -EFAULT; - - *f_pos += count; - return count; + return simple_read_from_buffer(buf, count, ppos, + priv->vb.vaddr, priv->bytes); } static loff_t fpga_llseek(struct file *filp, loff_t offset, int origin) @@ -767,26 +762,7 @@ static loff_t fpga_llseek(struct file *filp, loff_t offset, int origin) if ((filp->f_flags & O_ACCMODE) != O_RDONLY) return -EINVAL; - switch (origin) { - case SEEK_SET: /* seek relative to the beginning of the file */ - newpos = offset; - break; - case SEEK_CUR: /* seek relative to current position in the file */ - newpos = filp->f_pos + offset; - break; - case SEEK_END: /* seek relative to the end of the file */ - newpos = priv->fw_size - offset; - break; - default: - return -EINVAL; - } - - /* check for sanity */ - if (newpos > priv->fw_size) - return -EINVAL; - - filp->f_pos = newpos; - return newpos; + return fixed_size_llseek(file, offset, origin, priv->fw_size); } static const struct file_operations fpga_fops = { |