Hi Jaehoon,
>------- Original Message -------
>Sender : Jaehoon Chung<jh80.chung@xxxxxxxxxxx> S4/Engineer/System S/W Lab./Samsung Electronics
>Date : Oct 06, 2013 17:28 (GMT+09:00)
>Title : Re: [PATCH] mmc: dw_mmc: Add hardware lock error (HLE) to the CMD error flag
>Hi Alim,
>On 10/03/2013 06:18 PM, alim akhtar wrote:
>> From: Alim Akhtar
>>
>> Hardware locked error set when the dw_mmc controller cannot load a
>> command issued by software. When software sets the start_cmd bit in the
>> CMD register, the controller tries to load the command. If the command
>> buffer is already filled with a command, this error is raised. Currently
>> driver does not handle HLE interrupt, which results in a system hang.
>When SDMMC_INT_HLE is set into CMD_ERROR_FLAGS,.then could driver handle the HLE interrupt?
Yes, this will be handled as a part of DW_MCI_CMD_ERROR_FLAGS error handling.
>Best Regards,
>Jaehoon Chung
>>
>> HLE can be simulated by quickly inserting and removing sd card in card
>> slot (30 ~ 40 times in say 20 secs)
>>
>> Reviewed-by: Doug Anderson
>> Signed-off-by: Alim Akhtar
>> ---
>> drivers/mmc/host/dw_mmc.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
>> index 0a6a512..24b4a52 100644
>> --- a/drivers/mmc/host/dw_mmc.c
>> +++ b/drivers/mmc/host/dw_mmc.c
>> @@ -44,7 +44,7 @@
>> SDMMC_INT_HTO | SDMMC_INT_SBE | \
>> SDMMC_INT_EBE)
>> #define DW_MCI_CMD_ERROR_FLAGS (SDMMC_INT_RTO | SDMMC_INT_RCRC | \
>> - SDMMC_INT_RESP_ERR)
>> + SDMMC_INT_RESP_ERR | SDMMC_INT_HLE)
>> #define DW_MCI_ERROR_FLAGS (DW_MCI_DATA_ERROR_FLAGS | \
>> DW_MCI_CMD_ERROR_FLAGS | SDMMC_INT_HLE)
>> #define DW_MCI_SEND_STATUS 1
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