Re: [PATCH v2] hv: utils: enhance code for human read

From: JesÃs Castro
Date: Mon Mar 25 2019 - 18:42:54 EST


On Mon, Mar 11, 2019 at 06:29:49PM -0600, JesÃs Castro wrote:
> The if/else block from hvt_op_open function can be written
> as a switch/case block, and the bool issue_reset variable
> is avoided.
>
> No functional change made.
>
> Suggested-by: Joe Perches <joe@xxxxxxxxxxx>
> Signed-off-by: JesÃs Castro <x51v4n@xxxxxxxxx>
> ---
>
> v2: Refactoring hvt_op_open function with a switch/case block.
> Change subject from: fix coding style
>
ping?

> drivers/hv/hv_utils_transport.c | 22 +++++++++++-----------
> 1 file changed, 11 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/hv/hv_utils_transport.c b/drivers/hv/hv_utils_transport.c
> index 832777527936..6b27dd7be9bb 100644
> --- a/drivers/hv/hv_utils_transport.c
> +++ b/drivers/hv/hv_utils_transport.c
> @@ -125,35 +125,35 @@ static int hvt_op_open(struct inode *inode, struct file *file)
> {
> struct hvutil_transport *hvt;
> int ret = 0;
> - bool issue_reset = false;
>
> hvt = container_of(file->f_op, struct hvutil_transport, fops);
>
> mutex_lock(&hvt->lock);
>
> - if (hvt->mode == HVUTIL_TRANSPORT_DESTROY) {
> - ret = -EBADF;
> - } else if (hvt->mode == HVUTIL_TRANSPORT_INIT) {
> + switch (hvt->mode) {
> + case HVUTIL_TRANSPORT_INIT:
> /*
> * Switching to CHARDEV mode. We switch bach to INIT when
> * device gets released.
> */
> hvt->mode = HVUTIL_TRANSPORT_CHARDEV;
> - }
> - else if (hvt->mode == HVUTIL_TRANSPORT_NETLINK) {
> + break;
> + case HVUTIL_TRANSPORT_NETLINK:
> /*
> * We're switching from netlink communication to using char
> * device. Issue the reset first.
> */
> - issue_reset = true;
> hvt->mode = HVUTIL_TRANSPORT_CHARDEV;
> - } else {
> + hvt_reset(hvt);
> + break;
> + case HVUTIL_TRANSPORT_DESTROY:
> + ret = -EBADF;
> + break;
> + default:
> ret = -EBUSY;
> + break;
> }
>
> - if (issue_reset)
> - hvt_reset(hvt);
> -
> mutex_unlock(&hvt->lock);
>
> return ret;
> --
> 2.21.0
>