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...
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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