[PATCH 2/4] spi: stm32_qspi: Add WATCHDOG_RESET in _stm32_qspi_read_fifo()

[Patrice Chotard]

In case of reading large area and memory-map mode is misconfigured
(memory-map size declared lower than the real size of the memory chip)
watchdog can be triggered.

Add WATCHDOG_RESET() in _stm32_qspi_read_fifo to fix it.

Issue reproduced with stm32mp157c-ev1 board and memory map size set to
1, with following command:
sf read 0xC0000000 0 0x4000000

Signed-off-by: Patrice Chotard <patrice.chotard at foss.st.com>
---

 drivers/spi/stm32_qspi.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/spi/stm32_qspi.c b/drivers/spi/stm32_qspi.c
index 958c394a1a..c3da17f991 100644
--- a/drivers/spi/stm32_qspi.c
+++ b/drivers/spi/stm32_qspi.c
@@ -11,6 +11,7 @@
 #include <clk.h>
 #include <reset.h>
 #include <spi-mem.h>
+#include <watchdog.h>
 #include <linux/iopoll.h>
 #include <linux/ioport.h>
 #include <linux/sizes.h>
@@ -163,6 +164,7 @@ static int _stm32_qspi_wait_cmd(struct stm32_qspi_priv *priv,
 static void _stm32_qspi_read_fifo(u8 *val, void __iomem *addr)
 {
 	*val = readb(addr);
+	WATCHDOG_RESET();
 }
 
 static void _stm32_qspi_write_fifo(u8 *val, void __iomem *addr)
-- 
2.17.1