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Date:   Thu, 12 Dec 2019 11:34:42 -0800
From:   Nick Desaulniers <ndesaulniers@...gle.com>
To:     Nathan Chancellor <natechancellor@...il.com>
Cc:     Kalle Valo <kvalo@...eaurora.org>, ath11k@...ts.infradead.org,
        linux-wireless@...r.kernel.org,
        Network Development <netdev@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        clang-built-linux <clang-built-linux@...glegroups.com>
Subject: Re: [PATCH] ath11k: Remove unnecessary enum scan_priority

On Wed, Dec 11, 2019 at 11:23 AM Nathan Chancellor
<natechancellor@...il.com> wrote:
>
> Clang warns:
>
> drivers/net/wireless/ath/ath11k/wmi.c:1827:23: warning: implicit
> conversion from enumeration type 'enum wmi_scan_priority' to different
> enumeration type 'enum scan_priority' [-Wenum-conversion]
>         arg->scan_priority = WMI_SCAN_PRIORITY_LOW;
>                            ~ ^~~~~~~~~~~~~~~~~~~~~
> 1 warning generated.
>
> wmi_scan_priority and scan_priority have the same values but the wmi one
> has WMI prefixed to the names. Since that enum is already being used,
> get rid of scan_priority and switch its one use to wmi_scan_priority to
> fix this warning.
>
> Fixes: d5c65159f289 ("ath11k: driver for Qualcomm IEEE 802.11ax devices")
> Link: https://github.com/ClangBuiltLinux/linux/issues/808
> Signed-off-by: Nathan Chancellor <natechancellor@...il.com>

Further, it looks like the member `scan_priority` in `struct
wmi_start_scan_arg` and `struct wmi_start_scan_cmd` should probably
use `enum wmi_scan_priority`, rather than `u32`.  Also, I don't know
if the more concisely named enum is preferable?  Either way, thanks
for the patch.
Reviewed-by: Nick Desaulniers <ndesaulniers@...gle.com>

> ---
>  drivers/net/wireless/ath/ath11k/wmi.h | 11 +----------
>  1 file changed, 1 insertion(+), 10 deletions(-)
>
> diff --git a/drivers/net/wireless/ath/ath11k/wmi.h b/drivers/net/wireless/ath/ath11k/wmi.h
> index 4a518d406bc5..756101656391 100644
> --- a/drivers/net/wireless/ath/ath11k/wmi.h
> +++ b/drivers/net/wireless/ath/ath11k/wmi.h
> @@ -2896,15 +2896,6 @@ struct wmi_bcn_offload_ctrl_cmd {
>         u32 bcn_ctrl_op;
>  } __packed;
>
> -enum scan_priority {
> -       SCAN_PRIORITY_VERY_LOW,
> -       SCAN_PRIORITY_LOW,
> -       SCAN_PRIORITY_MEDIUM,
> -       SCAN_PRIORITY_HIGH,
> -       SCAN_PRIORITY_VERY_HIGH,
> -       SCAN_PRIORITY_COUNT,
> -};
> -
>  enum scan_dwelltime_adaptive_mode {
>         SCAN_DWELL_MODE_DEFAULT = 0,
>         SCAN_DWELL_MODE_CONSERVATIVE = 1,
> @@ -3056,7 +3047,7 @@ struct scan_req_params {
>         u32 scan_req_id;
>         u32 vdev_id;
>         u32 pdev_id;
> -       enum scan_priority scan_priority;
> +       enum wmi_scan_priority scan_priority;
>         union {
>                 struct {
>                         u32 scan_ev_started:1,
> --
> 2.24.0
>
> --

-- 
Thanks,
~Nick Desaulniers

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