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SubjectRe: [PATCH] firmware: fix -Wunused-function compiler warnings
On Tue, Jul 23, 2019 at 09:32:02AM -0400, Qian Cai wrote:
> The commit 5342e7093ff2 ("firmware: Factor out the paged buffer handling
> code") introduced a few compilation warnings when
> CONFIG_FW_LOADER_USER_HELPER=n due to fw_grow_paged_buf() and
> fw_grow_paged_buf() are only used in
> drivers/base/firmware_loader/fallback.c, and the later will only be
> built if CONFIG_FW_LOADER_USER_HELPER=y.
>
> In file included from drivers/base/firmware_loader/main.c:41:
> drivers/base/firmware_loader/firmware.h:145:12: warning:
> 'fw_map_paged_buf' defined but not used [-Wunused-function]
> static int fw_map_paged_buf(struct fw_priv *fw_priv) { return -ENXIO; }
> ^~~~~~~~~~~~~~~~
> drivers/base/firmware_loader/firmware.h:144:12: warning:
> 'fw_grow_paged_buf' defined but not used [-Wunused-function]
> static int fw_grow_paged_buf(struct fw_priv *fw_priv, int pages_needed)
> { return -ENXIO; }
>
> Fix it by removing those unused functions all together when
> CONFIG_FW_LOADER_USER_HELPER=n.
>
> Fixes: 5342e7093ff2 ("firmware: Factor out the paged buffer handling code")
> Signed-off-by: Qian Cai <cai@lca.pw>
> ---
> drivers/base/firmware_loader/firmware.h | 2 --
> 1 file changed, 2 deletions(-)
>
> diff --git a/drivers/base/firmware_loader/firmware.h b/drivers/base/firmware_loader/firmware.h
> index 842e63f19f22..e74117bf8587 100644
> --- a/drivers/base/firmware_loader/firmware.h
> +++ b/drivers/base/firmware_loader/firmware.h
> @@ -141,8 +141,6 @@ int assign_fw(struct firmware *fw, struct device *device,
> int fw_map_paged_buf(struct fw_priv *fw_priv);
> #else
> static inline void fw_free_paged_buf(struct fw_priv *fw_priv) {}
> -static int fw_grow_paged_buf(struct fw_priv *fw_priv, int pages_needed) { return -ENXIO; }
> -static int fw_map_paged_buf(struct fw_priv *fw_priv) { return -ENXIO; }
> #endif
>
> #endif /* __FIRMWARE_LOADER_H */
> --
> 1.8.3.1
>

Is this still needed with 5.3-rc2? If so, please rebase and resend as
it does not apply to there.

thanks,

greg k-h

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