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soc: litex: Fix compile warning when device tree is not configured 

The test robot reported:

   drivers/soc/litex/litex_soc_ctrl.c:143:34: warning: unused variable 'litex_soc_ctrl_of_match' [-Wunused-const-variable]
   static const struct of_device_id litex_soc_ctrl_of_match[] = {
                                    ^
   1 warning generated.

As per the random config device tree is not configured causing the
litex_soc_ctrl_of_match match list to not be used.  This would usually
mean that we cannot even use this driver as it depends on device tree,
but as we also have COMPILE_TEST configured we allow it.

Fix the warning by surrounding the unused variable with an ifdef
CONFIG_OF.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Stafford Horne <shorne@gmail.com>
This commit is contained in:
Stafford Horne 2021-01-12 21:29:24 +09:00
parent 7c53f6b671
commit e6dc077b7d
1 changed files with 2 additions and 1 deletions
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3
drivers/soc/litex/litex_soc_ctrl.c
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@ -140,12 +140,13 @@ struct litex_soc_ctrl_device {
void __iomem *base;
};
#ifdef CONFIG_OF
static const struct of_device_id litex_soc_ctrl_of_match[] = {
{.compatible = "litex,soc-controller"},
{},
};
MODULE_DEVICE_TABLE(of, litex_soc_ctrl_of_match);
#endif /* CONFIG_OF */
static int litex_soc_ctrl_probe(struct platform_device *pdev)
{