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commite8d2d287e2upstream. Clang warns (or errors with CONFIG_WERROR=y): drivers/i3c/master/svc-i3c-master.c:596:2: error: unannotated fall-through between switch labels [-Werror,-Wimplicit-fallthrough] 596 | default: | ^ drivers/i3c/master/svc-i3c-master.c:596:2: note: insert 'break;' to avoid fall-through 596 | default: | ^ | break; 1 error generated. Clang is a little more pedantic than GCC, which does not warn when falling through to a case that is just break or return. Clang's version is more in line with the kernel's own stance in deprecated.rst, which states that all switch/case blocks must end in either break, fallthrough, continue, goto, or return. Add the missing break to silence the warning. Fixes:0430bf9bc1("i3c: master: svc: Fix missing STOP for master request") Signed-off-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20250319-i3c-fix-clang-fallthrough-v1-1-d8e02be1ef5c@kernel.org Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>