Am 15.02.2017 um 08:04 schrieb Shawn Lin:
> Hi Heiner,
>
> On 2017/2/15 4:53, Heiner Kallweit wrote:
>> Now that the new lifetime parameters are available in struct mmc_ext_csd
>> we can use this information to warn the user if card is close to or
>> beyond end of its lifetime.
>>
>
> This is really the user end argument that they could get it either from
> sysfs or whether user-space tools. I don't believe the user would look
> into the log but I assume you just add this for developers...
>
Indeed it's something userspace tools should take care of.
However I'm not aware of any standard tools doing this (especially on
non-production systems), so I thought such a sysylog warning would be
a good idea.
But of course there might be other opinions on that.
>> Signed-off-by: Heiner Kallweit <hkallweit1@xxxxxxxxx>
>> ---
>> drivers/mmc/core/bus.c | 16 ++++++++++++++++
>> 1 file changed, 16 insertions(+)
>>
>> diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c
>> index 30124651..ab20d242 100644
>> --- a/drivers/mmc/core/bus.c
>> +++ b/drivers/mmc/core/bus.c
>> @@ -345,6 +345,22 @@ int mmc_add_card(struct mmc_card *card)
>> uhs_bus_speed_mode, type, card->rca);
>> }
>>
>> + if (card->ext_csd.device_life_time_est_typ_a == 0xb ||
>> + card->ext_csd.device_life_time_est_typ_b == 0xb)
>> + pr_err("%s: memory has exceeded its life time",
>> + mmc_hostname(card->host));
>> + else if (card->ext_csd.device_life_time_est_typ_a == 0xa ||
>> + card->ext_csd.device_life_time_est_typ_b == 0xa)
>> + pr_warn("%s: memory has used more than 90%% of its life time\n",
>> + mmc_hostname(card->host));
>> +
>> + if (card->ext_csd.pre_eol_info == 3)
>> + pr_err("%s: out of reserved blocks\n",
>> + mmc_hostname(card->host));
>> + else if (card->ext_csd.pre_eol_info == 2)
>> + pr_warn("%s: more than 80%% of reserved blocks consumed\n",
>> + mmc_hostname(card->host));
>> +
>> #ifdef CONFIG_DEBUG_FS
>> mmc_add_card_debugfs(card);
>> #endif
>>
>
>
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