1 files changed, 1 insertions, 1 deletions

diff --git a/arch/mips/cavium-octeon/setup.c b/arch/mips/cavium-octeon/setup.c
index 44cb20cd3bdc..d1b5ffaf0281 100644
--- a/arch/mips/cavium-octeon/setup.c
+++ b/arch/mips/cavium-octeon/setup.c
@@ -702,7 +702,7 @@ int prom_putchar(char c)
         } while ((lsrval & 0x20) == 0);
 
         /* Write the byte */
-        cvmx_write_csr(CVMX_MIO_UARTX_THR(octeon_uart), c);
+        cvmx_write_csr(CVMX_MIO_UARTX_THR(octeon_uart), c & 0xffull);
         return 1;
 }