[PATCH] drivers: altera_edac: Fix OCRAM ECC init for warm reset

[Nazle Asmade, Muhammad Nazim Amirul]

On 11/5/2026 4:31 am, Dinh Nguyen wrote:
> 
> 
> On 5/9/26 09:38, muhammad.nazim.amirul.nazle.asmade at altera.com wrote:
>> From: Nazim Amirul <muhammad.nazim.amirul.nazle.asmade at altera.com>
>>
>> The OCRAM ECC is always enabled either by the BootROM or by the
>> Secure Device Manager (SDM) during a power-on reset on SoCFPGA.
>>
>> However, during a warm reset, the OCRAM content is retained to
>> preserve data, while the control and status registers are reset to
>> their default values. As a result, ECC must be explicitly re-enabled
>> after a warm reset.
>>
>> Signed-off-by: Niravkumar L Rabara <nirav.rabara at altera.com>
>> Signed-off-by: Nazim Amirul 
>> <muhammad.nazim.amirul.nazle.asmade at altera.com>
>> ---
>>   drivers/edac/altera_edac.c | 10 ++++++++--
>>   1 file changed, 8 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/edac/altera_edac.c b/drivers/edac/altera_edac.c
>> index 103b2c2eba2a..9e6a9786a881 100644
>> --- a/drivers/edac/altera_edac.c
>> +++ b/drivers/edac/altera_edac.c
>> @@ -1186,8 +1186,14 @@ altr_check_ocram_deps_init(struct 
>> altr_edac_device_dev *device)
>>       /* Verify OCRAM has been initialized */
>>       if (!ecc_test_bits(ALTR_A10_ECC_INITCOMPLETEA,
>> -               (base + ALTR_A10_ECC_INITSTAT_OFST)))
>> -        return -ENODEV;
>> +               (base + ALTR_A10_ECC_INITSTAT_OFST))) {
>> +        if (!ecc_test_bits(ALTR_A10_ECC_EN,
>> +                   (base + ALTR_A10_ECC_CTRL_OFST)))
>> +            ecc_set_bits(ALTR_A10_ECC_EN,
>> +                     (base + ALTR_A10_ECC_CTRL_OFST));
>> +        else
>> +            return -ENODEV;
>> +    }
>>       /* Enable IRQ on Single Bit Error */
>>       writel(ALTR_A10_ECC_SERRINTEN, (base + 
>> ALTR_A10_ECC_ERRINTENS_OFST));
> 
> This patch fails to apply to both v7.1-rc1 and linux-next. Please base 
> your patch to the latest and resend.
> 
> Thanks,
> Dinh
> 
sorry for this confusion, dropping this patch as already available in 
upstream