From 95b35e67890fd906167224067d855cc855871f3c Mon Sep 17 00:00:00 2001
From: Daniele Lacamera <dan@danielinux.net>
Date: Mon, 24 Oct 2022 10:54:17 +0200
Subject: [PATCH] Fix ext API usage in uart/spi flash drivers

---
 src/spi_flash.c  | 5 ++++-
 src/uart_flash.c | 4 ++--
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/spi_flash.c b/src/spi_flash.c
index e276e109..25be4c17 100644
--- a/src/spi_flash.c
+++ b/src/spi_flash.c
@@ -111,6 +111,8 @@ static int RAMFUNCTION spi_flash_write_page(uint32_t address, const void *data,
 {
     const uint8_t *buf = data;
     int j = 0;
+    if (len < 1)
+        return -1;
     while (len > 0) {
         wait_busy();
         flash_write_enable();
@@ -129,7 +131,7 @@ static int RAMFUNCTION spi_flash_write_page(uint32_t address, const void *data,
         spi_cs_off(SPI_CS_FLASH);
     }
     wait_busy();
-    return j;
+    return 0;
 }
 
 static int RAMFUNCTION spi_flash_write_sb(uint32_t address, const void *data, int len)
@@ -137,6 +139,7 @@ static int RAMFUNCTION spi_flash_write_sb(uint32_t address, const void *data, in
     const uint8_t *buf = data;
     uint8_t verify = 0;
     int j = 0;
+
     wait_busy();
     if (len < 1)
         return -1;
diff --git a/src/uart_flash.c b/src/uart_flash.c
index 3cc031d8..4b159e7f 100644
--- a/src/uart_flash.c
+++ b/src/uart_flash.c
@@ -91,7 +91,7 @@ int  ext_flash_write(uintptr_t address, const uint8_t *data, int len)
         if (wait_ack() != 0)
             return -1;
     }
-    return i;
+    return 0;
 }
 
 int  ext_flash_read(uintptr_t address, uint8_t *data, int len)
@@ -118,7 +118,7 @@ int  ext_flash_read(uintptr_t address, uint8_t *data, int len)
             return 0;
         uart_tx(CMD_ACK);
     }
-    return len;
+    return 0;
 }
 
 int  ext_flash_erase(uintptr_t address, int len)