RIOT/pkg/esp32_sdk/patches/0010-spi_flash-disable-functions-not-required-or-not-supp.patch

From 5285a8f5898074d38d71054010cf912c2d7ffb2d Mon Sep 17 00:00:00 2001
From: Gunar Schorcht <gunar@schorcht.net>
Date: Sun, 30 Jan 2022 09:50:50 +0100
Subject: [PATCH 10/12] spi_flash: disable functions not required or not
 supported

- Various cache utility functions are neither required nor can they be supported by the means of RIOT. For example, it is not possible to change the priority of a thread.  They have to be therefore disabled in RIOT.
- Add alternative implementations for `spi_flash_disable_interrupts_caches_and_other_cpu` and `spi_flash_enable_interrupts_caches_and_other_cpu` if compiled for RIOT
---
 components/spi_flash/cache_utils.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/components/spi_flash/cache_utils.c b/components/spi_flash/cache_utils.c
index 7715900055..d7d750abdd 100644
--- a/components/spi_flash/cache_utils.c
+++ b/components/spi_flash/cache_utils.c
@@ -67,6 +67,8 @@ static void IRAM_ATTR spi_flash_restore_cache(uint32_t cpuid, uint32_t saved_sta
 
 static uint32_t s_flash_op_cache_state[2];
 
+#ifndef RIOT_VERSION
+
 #ifndef CONFIG_FREERTOS_UNICORE
 static SemaphoreHandle_t s_flash_op_mutex;
 static volatile bool s_flash_op_can_start = false;
@@ -293,6 +295,22 @@ void IRAM_ATTR spi_flash_enable_interrupts_caches_no_os(void)
 
 #endif // CONFIG_FREERTOS_UNICORE
 
+#else /* RIOT_VERSION */
+
+void IRAM_ATTR spi_flash_disable_interrupts_caches_and_other_cpu(void)
+{
+    irq_disable();
+    spi_flash_disable_cache(0, &s_flash_op_cache_state[0]);
+}
+
+void IRAM_ATTR spi_flash_enable_interrupts_caches_and_other_cpu(void)
+{
+    spi_flash_restore_cache(0, s_flash_op_cache_state[0]);
+    irq_enable();
+}
+
+#endif /* RIOT_VERSION */
+
 /**
  * The following two functions are replacements for Cache_Read_Disable and Cache_Read_Enable
  * function in ROM. They are used to work around a bug where Cache_Read_Disable requires a call to
-- 
2.17.1