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riscv: Fix sparse warning in __get_user_error()

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commit fef7ded169ed7e133612f90a032dc2af1ce19bef upstream.

We used to assign 0 to x without an appropriate cast which results in
sparse complaining when x is a pointer:

>> block/ioctl.c:72:39: sparse: sparse: Using plain integer as NULL pointer

So fix this by casting 0 to the correct type of x.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202508062321.gHv4kvuY-lkp@intel.com/
Fixes: f6bff7827a ("riscv: uaccess: use 'asm_goto_output' for get_user()")
Cc: stable@vger.kernel.org
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Clément Léger <cleger@rivosinc.com>
Reviewed-by: Cyril Bur <cyrilbur@tenstorrent.com>
Link: https://lore.kernel.org/r/20250903-dev-alex-sparse_warnings_v1-v1-1-7e6350beb700@rivosinc.com
Signed-off-by: Paul Walmsley <pjw@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alexandre Ghiti 2025-09-03 18:53:08 +00:00 committed by Greg Kroah-Hartman
parent 0e2243cc71
commit 8b94eb38bf
1 changed files with 1 additions and 1 deletions
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2
arch/riscv/include/asm/uaccess.h
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@ -209,7 +209,7 @@ do { \
err = 0; \
break; \
__gu_failed: \
x = 0; \
x = (__typeof__(x))0; \
err = -EFAULT; \
} while (0)