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spi_flash: esp32: fix regression in encrypted flash write

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In commit 309376f51a, it seems like regression
was added to use ROM level API for disabling flash write protection. This
started random firmware crashes (on specific modules) with exception
`IllegalInstruction` during encrypted flash writes.

Fix here removes relevant ROM API call, since disabling flash write protection
is already ensured by caller of this API.

Closes https://github.com/espressif/esp-idf/issues/5467
This commit is contained in:
Mahavir Jain 2020-06-23 16:03:08 +05:30
parent 156bd313d2
commit 939a7ada04
1 changed files with 1 additions and 5 deletions
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6
components/spi_flash/esp32/flash_ops_esp32.c
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@ -35,15 +35,11 @@ static inline void IRAM_ATTR spi_flash_guard_end(void)
esp_rom_spiflash_result_t IRAM_ATTR spi_flash_write_encrypted_chip(size_t dest_addr, const void *src, size_t size)
{
const uint8_t *ssrc = (const uint8_t *)src;
esp_rom_spiflash_result_t rc;
esp_rom_spiflash_result_t rc = ESP_ROM_SPIFLASH_RESULT_OK;
assert((dest_addr % 16) == 0);
assert((size % 16) == 0);
rc = esp_rom_spiflash_unlock();
if (rc != ESP_ROM_SPIFLASH_RESULT_OK) {
return rc;
}
/* esp_rom_spiflash_write_encrypted encrypts data in RAM as it writes,
so copy to a temporary buffer - 32 bytes at a time.