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SubjectRe: [PATCH 3/9] staging: media: atomisp: annotate an unused function
On Fri, May 29, 2020 at 10:00:25PM +0200, Arnd Bergmann wrote:
> atomisp_mrfld_power() has no more callers and produces
> a warning:
>
> drivers/staging/media/atomisp/pci/atomisp_v4l2.c:764:12: error: unused function 'atomisp_mrfld_power' [-Werror,-Wunused-function]
>
> Mark the function as unused while the PM code is being
> debugged, expecting that it will be used again in the
> future and should not just be removed.
>
> Fixes: 95d1f398c4dc ("media: atomisp: keep the ISP powered on when setting it")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Mauro fixed this in his experimental branch:

https://git.linuxtv.org/mchehab/experimental.git/commit/?id=dbcee8118fc9283401df9dbe8ba03ab9d17433ff

> ---
> drivers/staging/media/atomisp/pci/atomisp_v4l2.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/staging/media/atomisp/pci/atomisp_v4l2.c b/drivers/staging/media/atomisp/pci/atomisp_v4l2.c
> index 694268d133c0..10abb35ba0e0 100644
> --- a/drivers/staging/media/atomisp/pci/atomisp_v4l2.c
> +++ b/drivers/staging/media/atomisp/pci/atomisp_v4l2.c
> @@ -761,7 +761,8 @@ static void punit_ddr_dvfs_enable(bool enable)
> pr_info("DDR DVFS, door bell is not cleared within 3ms\n");
> }
>
> -static int atomisp_mrfld_power(struct atomisp_device *isp, bool enable)
> +static __attribute__((unused)) int
> +atomisp_mrfld_power(struct atomisp_device *isp, bool enable)
> {
> unsigned long timeout;
> u32 val = enable ? MRFLD_ISPSSPM0_IUNIT_POWER_ON :
> --
> 2.26.2
>

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