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SubjectRe: [PATCH v5 2/5] fpga: fix for coding style issues
On Thu, Apr 21, 2022 at 10:17:41AM +0530, Nava kishore Manne wrote:
> fixes the below checks reported by checkpatch.pl:
> - Lines should not end with a '('
> - Alignment should match open parenthesis
>
> Signed-off-by: Nava kishore Manne <nava.manne@xilinx.com>
> Acked-by: Xu Yilun <yilun.xu@intel.com>

Sorry, the checkpatch maintainer Joe gives comments after my Acked-by,
so maybe more changes should be made, see my comments inline.

And if you have more changes than expectation, it is better to remove the
Acked-by/Reviewed-by tags, otherwise people thought the reviewers are
good to new changes which are actually not checked at all.

> ---
> Changes for v2:
> -None.
> Changes for v3:
> -Fixed similar issue exists in "drivers/fpga/*".
> Changes for v4:
> -None.
> Changes for v5:
> - Reduced the length of the 'fpga_mgr_write_init(...)' API
> as suggested by Joe.
> - To align Include declaration and definition of APIs updated
> the FPGA-region.h file as suggested by joe.

The of_fpga_region_parse_ov() changes are also new to us.

>
> drivers/fpga/fpga-mgr.c | 4 ++--
> drivers/fpga/fpga-region.c | 7 ++++---
> drivers/fpga/of-fpga-region.c | 6 +++---
> include/linux/fpga/fpga-region.h | 7 ++++---
> 4 files changed, 13 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/fpga/fpga-mgr.c b/drivers/fpga/fpga-mgr.c
> index d49a9ce34568..d9a2aad7b35f 100644
> --- a/drivers/fpga/fpga-mgr.c
> +++ b/drivers/fpga/fpga-mgr.c
> @@ -148,11 +148,11 @@ static int fpga_mgr_write_init_buf(struct fpga_manager *mgr,
> int ret;
>
> mgr->state = FPGA_MGR_STATE_WRITE_INIT;
> + count = min(mgr->mops->initial_header_size, count);

Move the line in 'else' block, cause the count is not used
if(!mgr->mops->initial_header_size).

> if (!mgr->mops->initial_header_size)
> ret = fpga_mgr_write_init(mgr, info, NULL, 0);
> else
> - ret = fpga_mgr_write_init(
> - mgr, info, buf, min(mgr->mops->initial_header_size, count));
> + ret = fpga_mgr_write_init(mgr, info, buf, count);
>
> if (ret) {
> dev_err(&mgr->dev, "Error preparing FPGA for writing\n");
> diff --git a/drivers/fpga/fpga-region.c b/drivers/fpga/fpga-region.c
> index b0ac18de4885..3864bf4f8920 100644
> --- a/drivers/fpga/fpga-region.c
> +++ b/drivers/fpga/fpga-region.c
> @@ -18,9 +18,10 @@
> static DEFINE_IDA(fpga_region_ida);
> static struct class *fpga_region_class;
>
> -struct fpga_region *fpga_region_class_find(
> - struct device *start, const void *data,
> - int (*match)(struct device *, const void *))
> +struct fpga_region *fpga_region_class_find(struct device *start,
> + const void *data,
> + int (*match)(struct device *,
> + const void *))

According to Joe's suggestion, it had better be:

struct fpga_region *
fpga_region_class_find(struct device *start, const void *data,
int (*match)(struct device *, const void *))


> {
> struct device *dev;
>
> diff --git a/drivers/fpga/of-fpga-region.c b/drivers/fpga/of-fpga-region.c
> index 50b83057c048..55209737075f 100644
> --- a/drivers/fpga/of-fpga-region.c
> +++ b/drivers/fpga/of-fpga-region.c
> @@ -189,9 +189,9 @@ static int child_regions_with_firmware(struct device_node *overlay)
> * fpga_image_info struct if there is an image to program.
> * error code for invalid overlay.
> */
> -static struct fpga_image_info *of_fpga_region_parse_ov(
> - struct fpga_region *region,
> - struct device_node *overlay)
> +static struct fpga_image_info
> +*of_fpga_region_parse_ov(struct fpga_region *region,
> + struct device_node *overlay)

Don't put the '*' at the beginning, it should be:

static struct fpga_image_info *
of_fpga_region_parse_ov(struct fpga_region *region,
struct device_node *overlay)

> {
> struct device *dev = &region->dev;
> struct fpga_image_info *info;
> diff --git a/include/linux/fpga/fpga-region.h b/include/linux/fpga/fpga-region.h
> index 3b87f232425c..7ebf743b8f8a 100644
> --- a/include/linux/fpga/fpga-region.h
> +++ b/include/linux/fpga/fpga-region.h
> @@ -52,9 +52,10 @@ struct fpga_region {
>
> #define to_fpga_region(d) container_of(d, struct fpga_region, dev)
>
> -struct fpga_region *fpga_region_class_find(
> - struct device *start, const void *data,
> - int (*match)(struct device *, const void *));
> +struct fpga_region *fpga_region_class_find(struct device *start,
> + const void *data,
> + int (*match)(struct device *,
> + const void *));

Please also follow Joe's suggestion:

struct fpga_region *
fpga_region_class_find(struct device *start, const void *data,
int (*match)(struct device *, const void *));


Thanks,
Yilun

>
> int fpga_region_program_fpga(struct fpga_region *region);
>
> --
> 2.25.1

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