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atomisp: avoid warning about unused function

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The atomisp_mrfld_power() function isn't actually ever called, because
the two call-sites have commented out the use because it breaks on some
platforms.  That results in:

  drivers/staging/media/atomisp/pci/atomisp_v4l2.c:764:12: warning: ‘atomisp_mrfld_power’ defined but not used [-Wunused-function]
    764 | static int atomisp_mrfld_power(struct atomisp_device *isp, bool enable)
        |            ^~~~~~~~~~~~~~~~~~~

during the build.

Rather than commenting out the use entirely, just disable it
semantically instead (using a "0 &&" construct), leaving the call in
place from a syntax standpoint, and avoiding the warning.

I really don't want my builds to have any warnings that can then hide
real issues.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Linus Torvalds
2020-06-03 21:22:46 -07:00
parent a98f670e41
commit 6929f71e46
1 changed files with 4 additions and 6 deletions
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drivers/staging/media/atomisp/pci/atomisp_v4l2.c
+4 -6
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@@ -824,17 +824,15 @@ static int atomisp_mrfld_power(struct atomisp_device *isp, bool enable)
/* Workaround for pmu_nc_set_power_state not ready in MRFLD */
int atomisp_mrfld_power_down(struct atomisp_device *isp)
{
return 0;
// FIXME: at least with ISP2401, the code below causes the driver to break
// return atomisp_mrfld_power(isp, false);
// FIXME: at least with ISP2401, enabling this code causes the driver to break
return 0 && atomisp_mrfld_power(isp, false);
}
/* Workaround for pmu_nc_set_power_state not ready in MRFLD */
int atomisp_mrfld_power_up(struct atomisp_device *isp)
{
return 0;
// FIXME: at least with ISP2401, the code below causes the driver to break
// return atomisp_mrfld_power(isp, true);
// FIXME: at least with ISP2401, enabling this code causes the driver to break
return 0 && atomisp_mrfld_power(isp, true);
}
int atomisp_runtime_suspend(struct device *dev)