Hi--
On 4/21/22 13:36, Guenter Roeck wrote:
On 4/21/22 12:03, Naresh Kamboju wrote:
Linux mainline and linux next arm64 builds failed with gcc-7.3.x.
drivers/usb/typec/tcpm/tcpm.c: In function 'run_state_machine': drivers/usb/typec/tcpm/tcpm.c:4724:3: error: case label does not reduce to an integer constant case BDO_MODE_TESTDATA: ^~~~ make[4]: *** [scripts/Makefile.build:288: drivers/usb/typec/tcpm/tcpm.o] Error 1 ^ Reported-by: Linux Kernel Functional Testing lkft@linaro.org
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That code is several years old, the define is a constant, and I don't see a recent change in the code. What am I missing ?
See a recent patch for the same problem in a different area:
commit 1ef8715975de Author: Borislav Petkov bp@suse.de Date: Tue Apr 5 17:15:08 2022 +0200
ALSA: usb-audio: Fix undefined behavior due to shift overflowing the constant
so those constants probably need to be cast to unsigned int. (I guess)