[PATCH 34/36] tty: serial: pmac_zilog: Make disposable variable __always_unused
From: Lee Jones <hidden>
Date: 2020-11-04 19:36:56
Also in:
linux-serial, lkml
Subsystem:
the rest, tty layer and serial drivers · Maintainers:
Linus Torvalds, Greg Kroah-Hartman, Jiri Slaby
Fixes the following W=1 kernel build warning(s): drivers/tty/serial/pmac_zilog.h:365:58: warning: variable ‘garbage’ set but not used [-Wunused-but-set-variable] Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <redacted> Cc: linux-serial@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: Lee Jones <redacted> --- drivers/tty/serial/pmac_zilog.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/tty/serial/pmac_zilog.h b/drivers/tty/serial/pmac_zilog.h
index bb874e76810e0..968aec7c1cf82 100644
--- a/drivers/tty/serial/pmac_zilog.h
+++ b/drivers/tty/serial/pmac_zilog.h@@ -362,7 +362,7 @@ static inline void zssync(struct uart_pmac_port *port) /* Misc macros */ #define ZS_CLEARERR(port) (write_zsreg(port, 0, ERR_RES)) -#define ZS_CLEARFIFO(port) do { volatile unsigned char garbage; \ +#define ZS_CLEARFIFO(port) do { volatile unsigned char __always_unused garbage; \ garbage = read_zsdata(port); \ garbage = read_zsdata(port); \ garbage = read_zsdata(port); \
--
2.25.1