On Sun, Oct 15, 2017 at 01:58:23AM +0530, Harsha Sharma wrote:
> Replace use of list_for_each with list_for_each_entry to simplify the
> code and remove variables that are used only in list_for_each.
> Done with following coccinelle patch:
>
> @r@
> identifier fn,i,f,p;
> expression e;
> iterator name list_for_each, list_for_each_entry;
> type T;
> @@
>
> fn(...) {
> ++ T *i;
> <+...
> - list_for_each(p,e)
> + list_for_each_entry(i,e,f)
> {
> ...
> - T *i = list_entry(p,T,f);
> ...
> }
> ...+>
> }
>
> @@
> identifier r.fn,r.p;
> @@
>
> fn(...) {
> ...
> - struct list_head *p;
> ... when != p
> }
>
> @@
> identifier r.fn,r.i,r.f;
> expression r.e;
> statement S;
> @@
>
> fn(...) {
> <...
> list_for_each_entry(i,e,f)
> - {
> S
> - }
> ...>
> }
>
> @s@
> identifier i,f,p;
> expression e;
> type T;
> @@
>
> - list_for_each(p,e)
> + list_for_each_entry(i,e,f)
> {
> ... when != T *i;
> - i = list_entry(p,T,f);
> ...
> }
>
> @@
> identifier s.p;
> @@
>
> - struct list_head *p;
> ... when != p
>
> @@
> identifier s.i,s.f;
> expression s.e;
> statement S;
> @@
>
> list_for_each_entry(i,e,f)
> - {
> S
> - }
>
> Signed-off-by: Harsha Sharma <harshasharmaiitr@xxxxxxxxx>
Reviewed-by: Sean Paul <seanpaul@xxxxxxxxxxxx>
> ---
> drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c | 4 +---
> 1 file changed, 1 insertion(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c b/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c
> index bd6cce093a85..bf96072d1b97 100644
> --- a/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c
> +++ b/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c
> @@ -414,11 +414,9 @@ tinydrm_dbg_spi_print(struct spi_device *spi, struct spi_transfer *tr,
> void _tinydrm_dbg_spi_message(struct spi_device *spi, struct spi_message *m)
> {
> struct spi_transfer *tmp;
> - struct list_head *pos;
> int i = 0;
>
> - list_for_each(pos, &m->transfers) {
> - tmp = list_entry(pos, struct spi_transfer, transfer_list);
> + list_for_each_entry(tmp, &m->transfers, transfer_list) {
>
> if (tmp->tx_buf)
> tinydrm_dbg_spi_print(spi, tmp, tmp->tx_buf, i, true);
> --
> 2.11.0
>
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--
Sean Paul, Software Engineer, Google / Chromium OS
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