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multi_console: Check functions are not NULL 

Change-Id: I2d67bb1bebd15e6a7d69ea5e7b6fda9c972f9d86
Signed-off-by: Joel Hutton <Joel.Hutton@Arm.com>
This commit is contained in:
Joel Hutton 2019-01-15 15:40:18 +00:00
parent 7ca572d93c
commit e84c871391
1 changed files with 4 additions and 4 deletions
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8
drivers/console/multi_console.c
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
* Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@ -76,7 +76,7 @@ int console_putc(int c)
console_t *console;
for (console = console_list; console != NULL; console = console->next)
if (console->flags & console_state) {
if ((console->flags & console_state) && console->putc) {
int ret = console->putc(c, console);
if ((err == ERROR_NO_VALID_CONSOLE) || (ret < err))
err = ret;
@ -93,7 +93,7 @@ int console_getc(void)
do { /* Keep polling while at least one console works correctly. */
for (console = console_list; console != NULL;
console = console->next)
if (console->flags & console_state) {
if ((console->flags & console_state) && console->getc) {
int ret = console->getc(console);
if (ret >= 0)
return ret;
@ -111,7 +111,7 @@ int console_flush(void)
console_t *console;
for (console = console_list; console != NULL; console = console->next)
if (console->flags & console_state) {
if ((console->flags & console_state) && console->flush) {
int ret = console->flush(console);
if ((err == ERROR_NO_VALID_CONSOLE) || (ret < err))
err = ret;