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SubjectRe: [PATCH] workqueue: fix enum type for gcc-13
On Tue, Jan 17, 2023 at 6:00 PM Arnd Bergmann <arnd@kernel.org> wrote:
>
> From: Arnd Bergmann <arnd@arndb.de>
>
> In gcc-13, the WORK_STRUCT_WQ_DATA_MASK constant is a signed 64-bit
> type on 32-bit architectures because the enum definition has both
> negative numbers and numbers above LONG_MAX in it:
>
> kernel/workqueue.c: In function 'get_work_pwq':
> kernel/workqueue.c:709:24: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
> 709 | return (void *)(data & WORK_STRUCT_WQ_DATA_MASK);
> | ^
> kernel/workqueue.c: In function 'get_work_pool':
> kernel/workqueue.c:737:25: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
> 737 | return ((struct pool_workqueue *)
> | ^
> kernel/workqueue.c: In function 'get_work_pool_id':
> kernel/workqueue.c:759:25: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
> 759 | return ((struct pool_workqueue *)
> | ^
>
> Change the enum definition to ensure all values can fit into
> the range of 'unsigned long' on all architectures.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
> include/linux/workqueue.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)

Tested-by: Thierry Reding <treding@nvidia.com>

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