console: Squelch pre-console output in console functions
There are some locations in the code which anticipate printf() being called
before the console is ready by squelching printf() on gd->have_console.
Move this squelching into printf(), vprintf(), puts() and putc(). Also
make tstc() and getc() return 0 if console is not yet initialised
Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
Tested-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/i2c/ppc4xx_i2c.c b/drivers/i2c/ppc4xx_i2c.c
index c1cbe55..53fedd5 100644
--- a/drivers/i2c/ppc4xx_i2c.c
+++ b/drivers/i2c/ppc4xx_i2c.c
@@ -396,10 +396,7 @@
#endif
if ((ret = i2c_transfer(read, chip << 1, &xaddr[4 - alen], alen,
buffer, len)) != 0) {
- if (gd->have_console) {
- printf("I2C %s: failed %d\n",
- read ? "read" : "write", ret);
- }
+ printf("I2C %s: failed %d\n", read ? "read" : "write", ret);
return 1;
}