linux-kernel - Re: [PATCH][next] media: atomisp: remove redundant assignments to variables

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Message-ID: <fec812d4-1d69-46cb-9ad1-9634f0062a5f@redhat.com>
Date: Sun, 31 Dec 2023 10:39:27 +0100
From: Hans de Goede <hdegoede@...hat.com>
To: Colin Ian King <colin.i.king@...il.com>,
 Mauro Carvalho Chehab <mchehab@...nel.org>,
 Sakari Ailus <sakari.ailus@...ux.intel.com>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 linux-media@...r.kernel.org, linux-staging@...ts.linux.dev
Cc: kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH][next] media: atomisp: remove redundant assignments to
 variables

Hi,

On 12/19/23 15:39, Colin Ian King wrote:
> There are several variables that are being initialized with values
> that are never read, the assignment are redundant and can be removed.
> Cleans up cppcheck unreadVariable warnings.
> 
> Signed-off-by: Colin Ian King <colin.i.king@...il.com>

Thank you for your patch.

I have merged this in my media-atomisp branch:
https://git.kernel.org/pub/scm/linux/kernel/git/hansg/linux.git/log/?h=media-atomisp

And this patch will be included in my next
pull-request to Mauro (to media subsystem maintainer)

Regards,

Hans


> ---
>  .../atomisp/pci/base/circbuf/src/circbuf.c     |  2 +-
>  .../pci/runtime/pipeline/src/pipeline.c        |  4 +---
>  .../atomisp/pci/runtime/queue/src/queue.c      | 18 +++++++++---------
>  3 files changed, 11 insertions(+), 13 deletions(-)
> 
> diff --git a/drivers/staging/media/atomisp/pci/base/circbuf/src/circbuf.c b/drivers/staging/media/atomisp/pci/base/circbuf/src/circbuf.c
> index d9f7c143794d..06f039236abc 100644
> --- a/drivers/staging/media/atomisp/pci/base/circbuf/src/circbuf.c
> +++ b/drivers/staging/media/atomisp/pci/base/circbuf/src/circbuf.c
> @@ -207,7 +207,7 @@ bool ia_css_circbuf_increase_size(
>  {
>  	u8 curr_size;
>  	u8 curr_end;
> -	unsigned int i = 0;
> +	unsigned int i;
>  
>  	if (!cb || sz_delta == 0)
>  		return false;
> diff --git a/drivers/staging/media/atomisp/pci/runtime/pipeline/src/pipeline.c b/drivers/staging/media/atomisp/pci/runtime/pipeline/src/pipeline.c
> index 3d8741e7d5ca..966cb47b95d9 100644
> --- a/drivers/staging/media/atomisp/pci/runtime/pipeline/src/pipeline.c
> +++ b/drivers/staging/media/atomisp/pci/runtime/pipeline/src/pipeline.c
> @@ -693,7 +691,7 @@ static void pipeline_init_defaults(
>  static void ia_css_pipeline_set_zoom_stage(struct ia_css_pipeline *pipeline)
>  {
>  	struct ia_css_pipeline_stage *stage = NULL;
> -	int err = 0;
> +	int err;
>  
>  	assert(pipeline);
>  	if (pipeline->pipe_id == IA_CSS_PIPE_ID_PREVIEW) {
> diff --git a/drivers/staging/media/atomisp/pci/runtime/queue/src/queue.c b/drivers/staging/media/atomisp/pci/runtime/queue/src/queue.c
> index 2f1c2df59f71..c4d4062206a2 100644
> --- a/drivers/staging/media/atomisp/pci/runtime/queue/src/queue.c
> +++ b/drivers/staging/media/atomisp/pci/runtime/queue/src/queue.c
> @@ -81,7 +81,7 @@ int ia_css_queue_uninit(ia_css_queue_t *qhandle)
>  
>  int ia_css_queue_enqueue(ia_css_queue_t *qhandle, uint32_t item)
>  {
> -	int error = 0;
> +	int error;
>  
>  	if (!qhandle)
>  		return -EINVAL;
> @@ -138,7 +138,7 @@ int ia_css_queue_enqueue(ia_css_queue_t *qhandle, uint32_t item)
>  
>  int ia_css_queue_dequeue(ia_css_queue_t *qhandle, uint32_t *item)
>  {
> -	int error = 0;
> +	int error;
>  
>  	if (!qhandle || NULL == item)
>  		return -EINVAL;
> @@ -193,7 +193,7 @@ int ia_css_queue_dequeue(ia_css_queue_t *qhandle, uint32_t *item)
>  
>  int ia_css_queue_is_full(ia_css_queue_t *qhandle, bool *is_full)
>  {
> -	int error = 0;
> +	int error;
>  
>  	if ((!qhandle) || (!is_full))
>  		return -EINVAL;
> @@ -225,7 +225,7 @@ int ia_css_queue_is_full(ia_css_queue_t *qhandle, bool *is_full)
>  
>  int ia_css_queue_get_free_space(ia_css_queue_t *qhandle, uint32_t *size)
>  {
> -	int error = 0;
> +	int error;
>  
>  	if ((!qhandle) || (!size))
>  		return -EINVAL;
> @@ -257,7 +257,7 @@ int ia_css_queue_get_free_space(ia_css_queue_t *qhandle, uint32_t *size)
>  
>  int ia_css_queue_get_used_space(ia_css_queue_t *qhandle, uint32_t *size)
>  {
> -	int error = 0;
> +	int error;
>  
>  	if ((!qhandle) || (!size))
>  		return -EINVAL;
> @@ -289,8 +289,8 @@ int ia_css_queue_get_used_space(ia_css_queue_t *qhandle, uint32_t *size)
>  
>  int ia_css_queue_peek(ia_css_queue_t *qhandle, u32 offset, uint32_t *element)
>  {
> -	u32 num_elems = 0;
> -	int error = 0;
> +	u32 num_elems;
> +	int error;
>  
>  	if ((!qhandle) || (!element))
>  		return -EINVAL;
> @@ -338,7 +338,7 @@ int ia_css_queue_peek(ia_css_queue_t *qhandle, u32 offset, uint32_t *element)
>  
>  int ia_css_queue_is_empty(ia_css_queue_t *qhandle, bool *is_empty)
>  {
> -	int error = 0;
> +	int error;
>  
>  	if ((!qhandle) || (!is_empty))
>  		return -EINVAL;
> @@ -370,7 +370,7 @@ int ia_css_queue_is_empty(ia_css_queue_t *qhandle, bool *is_empty)
>  
>  int ia_css_queue_get_size(ia_css_queue_t *qhandle, uint32_t *size)
>  {
> -	int error = 0;
> +	int error;
>  
>  	if ((!qhandle) || (!size))
>  		return -EINVAL;