# HG changeset patch
# User Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
# Date 1721044905 14400
#      Mon Jul 15 08:01:45 2024 -0400
# Node ID 43d2a8cd5054c423dd77e350762ad8039ea45410
# Parent  bd4d46f389648014a12a38f580fd875e5cf0bfcc
arch: use correct polarity for the end-of-string check

The condition in usart_tx_flash_str was backward and therefore it never
printed anything when given a non-zero length string, and went beyond
end-of-buffer when given an empty string.

Signed-off-by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>

diff --git a/arch/atmega48p_usart.h b/arch/atmega48p_usart.h
--- a/arch/atmega48p_usart.h
+++ b/arch/atmega48p_usart.h
@@ -44,7 +44,7 @@
 
 static inline void usart_tx_flash_str(const __flash char *ptr)
 {
-	while (!*ptr) {
+	while (*ptr) {
 		usart_tx_byte(*ptr);
 		ptr++;
 	}