From: Michael (XIAO Xufeng) <xiaoxufeng@espressif.com>
Date: Mon, 20 Aug 2018 10:27:38 +0000 (+0800)
Subject: spi: fix the issue that spi cannot be used when flash is disabled
X-Git-Tag: v3.2-beta1~283^2~1
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=e3557b57bea92b57fc79d08073571cff40873296;p=esp-idf

spi: fix the issue that spi cannot be used when flash is disabled

The dma configuration function called in the ISR should be put into the IRAM.

Fixes https://github.com/espressif/esp-idf/issues/2307.
---

diff --git a/components/driver/spi_common.c b/components/driver/spi_common.c
index aa5495a8cf..06873f934a 100644
--- a/components/driver/spi_common.c
+++ b/components/driver/spi_common.c
@@ -330,7 +330,7 @@ void spicommon_cs_free_io(int cs_gpio_num)
 }
 
 //Set up a list of dma descriptors. dmadesc is an array of descriptors. Data is the buffer to point to.
-void spicommon_setup_dma_desc_links(lldesc_t *dmadesc, int len, const uint8_t *data, bool isrx)
+void IRAM_ATTR spicommon_setup_dma_desc_links(lldesc_t *dmadesc, int len, const uint8_t *data, bool isrx)
 {
     int n = 0;
     while (len) {