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hw/net/imx_fec: Rewrite fall through comments
GCC9 is confused by this comment when building with CFLAG -Wimplicit-fallthrough=2: hw/net/imx_fec.c: In function ‘imx_eth_write’: hw/net/imx_fec.c:906:12: error: this statement may fall through [-Werror=implicit-fallthrough=] 906 | if (unlikely(single_tx_ring)) { | ^ hw/net/imx_fec.c:912:5: note: here 912 | case ENET_TDAR: /* FALLTHROUGH */ | ^~~~ cc1: all warnings being treated as errors Rewrite the comments in the correct place, using 'fall through' which is recognized by GCC and static analyzers. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Message-Id: <20191218192526.13845-5-philmd@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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