Messages in this thread Patch in this message | | | Date | Wed, 16 Aug 2023 18:26:44 +0000 | Subject | [PATCH v2] mtd: maps: fix -Wvoid-pointer-to-enum-cast warning | From | Justin Stitt <> |
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When building with clang 18 I see the following warning: | drivers/mtd/maps/physmap-versatile.c:209:25: warning: cast to smaller | integer type 'enum versatile_flashprot' from 'const void *' [-Wvoid-pointer-to-enum-cast] | 209 | versatile_flashprot = (enum versatile_flashprot)devid->data;
This is due to the fact that `devid->data` is a void* while `enum versatile_flashprot` has the size of an int.
Cast `devid->data` to a uintptr_t to silence the above warning for clang builds using W=1.
Link: https://github.com/ClangBuiltLinux/linux/issues/1910 Reported-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Justin Stitt <justinstitt@google.com> --- Changes in v2: - Use more accurate commit message (thanks Krzysztof) - Link to v1: https://lore.kernel.org/r/20230815-void-drivers-mtd-maps-physmap-versatile-v1-1-ba6fc86d5e4e@google.com --- drivers/mtd/maps/physmap-versatile.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mtd/maps/physmap-versatile.c b/drivers/mtd/maps/physmap-versatile.c index a1b8b7b25f88..d65cf8833771 100644 --- a/drivers/mtd/maps/physmap-versatile.c +++ b/drivers/mtd/maps/physmap-versatile.c @@ -206,7 +206,7 @@ int of_flash_probe_versatile(struct platform_device *pdev, if (!sysnp) return -ENODEV; - versatile_flashprot = (enum versatile_flashprot)devid->data; + versatile_flashprot = (uintptr_t)devid->data; rmap = syscon_node_to_regmap(sysnp); of_node_put(sysnp); if (IS_ERR(rmap)) --- base-commit: 2ccdd1b13c591d306f0401d98dedc4bdcd02b421 change-id: 20230815-void-drivers-mtd-maps-physmap-versatile-2270fe7fdf16 Best regards, -- Justin Stitt <justinstitt@google.com>
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