mips: unify prom_putchar() declarations

prom_putchar() is used centrally in early printk infrastructure therefore
at least MIPS should agree on the function return type.

[paul.burton@mips.com:
  - Include linux/types.h in asm/setup.h to gain the bool typedef before
    we start include asm/setup.h elsewhere.
  - Include asm/setup.h in all files that use or define prom_putchar().
  - Also standardise on signed rather than unsigned char argument.]

Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Patchwork: https://patchwork.linux-mips.org/patch/19842/
Cc: linux-mips@linux-mips.org
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: Jonas Gorski <jonas.gorski@gmail.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/mips/cavium-octeon/setup.c b/arch/mips/cavium-octeon/setup.c
index a8034d0dcade..6c437486af39 100644
--- a/arch/mips/cavium-octeon/setup.c
+++ b/arch/mips/cavium-octeon/setup.c
@@ -36,6 +36,7 @@
 #include <asm/mipsregs.h>
 #include <asm/bootinfo.h>
 #include <asm/sections.h>
+#include <asm/setup.h>
 #include <asm/time.h>
 
 #include <asm/octeon/octeon.h>
@@ -1108,7 +1109,7 @@ void __init plat_mem_setup(void)
  * Emit one character to the boot UART.  Exported for use by the
  * watchdog timer.
  */
-int prom_putchar(char c)
+void prom_putchar(char c)
 {
         uint64_t lsrval;
 
@@ -1119,7 +1120,6 @@ int prom_putchar(char c)
 
         /* Write the byte */
         cvmx_write_csr(CVMX_MIO_UARTX_THR(octeon_uart), c & 0xffull);
-        return 1;
 }
 EXPORT_SYMBOL(prom_putchar);