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spi: stm32_qspi: Add WATCHDOG_RESET in _stm32_qspi_read_fifo() 

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@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
This commit is contained in:
Patrice Chotard 2021-01-20 14:42:02 +01:00
parent 5988575a90
commit e48ec51b43
1 changed files with 2 additions and 0 deletions
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2
drivers/spi/stm32_qspi.c
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@ -16,6 +16,7 @@
#include <reset.h>
#include <spi.h>
#include <spi-mem.h>
#include <watchdog.h>
#include <dm/device_compat.h>
#include <linux/bitops.h>
#include <linux/delay.h>
@ -171,6 +172,7 @@ 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)