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drivers: flash: stm32h7x: Fix wrong flash write offset

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The flash_stm32_write_range() function of the STM32H7x flash
driver partially uses a wrong flash program word size for certain
SOC types when calculating the flash write offset. If the used
SOC is not having a flash program word size of 256 bits / 32 bytes
the written data might get corrupted, as the flash write offset
value does not match the number of bytes that were actually
written.

Fixes #45568

Signed-off-by: Christoph Heller <chris@metanetics.de>
This commit is contained in:
Christoph Heller 2022-05-13 19:01:05 +02:00 • committed by Carles Cufí
commit 382ee011d5
1 changed files with 1 additions and 1 deletions
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2
drivers/flash/flash_stm32h7x.c
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@ -373,7 +373,7 @@ int flash_stm32_write_range(const struct device *dev, unsigned int offset,
const uint8_t nbytes = FLASH_NB_32BITWORD_IN_FLASHWORD * 4;
uint8_t unaligned_datas[nbytes];
for (i = 0; i < len && i + 32 <= len; i += 32, offset += 32U) {
for (i = 0; i < len && i + nbytes <= len; i += nbytes, offset += nbytes) {
rc = write_ndwords(dev, offset,
(const uint64_t *) data + (i >> 3),
ndwords);