Enable re-tuning when tuning is executed and
disable re-tuning when card is no longer initialized.
In the case of SDIO suspend, the card can keep power.
In that case, re-tuning need not be disabled, but, if
a re-tuning timer is being used, ensure it is disabled
and assume that re-tuning will be needed upon resume
since it is not known how long the suspend will last.
Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
---
Changes in V7:
Also flag re-tune needed in SDIO 'keep_power'
case, when a re-tuning timer is being used.
drivers/mmc/core/core.c | 4 ++++
drivers/mmc/core/sdio.c | 6 +++++-
2 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 92e7671..007c444 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -1109,6 +1109,8 @@ int mmc_execute_tuning(struct mmc_card *card)
if (err)
pr_err("%s: tuning execution failed\n", mmc_hostname(host));
+ else
+ mmc_retune_enable(host);
return err;
}
@@ -1140,6 +1142,8 @@ void mmc_set_bus_width(struct mmc_host *host, unsigned int width)
*/
void mmc_set_initial_state(struct mmc_host *host)
{
+ mmc_retune_disable(host);
+
if (mmc_host_is_spi(host))
host->ios.chip_select = MMC_CS_HIGH;
else
diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
index 5bc6c7d..16e1f39 100644
--- a/drivers/mmc/core/sdio.c
+++ b/drivers/mmc/core/sdio.c
@@ -934,8 +934,12 @@ static int mmc_sdio_suspend(struct mmc_host *host)
mmc_release_host(host);
}
- if (!mmc_card_keep_power(host))
+ if (!mmc_card_keep_power(host)) {
mmc_power_off(host);
+ } else if (host->retune_period) {
+ mmc_retune_timer_stop(host);
+ mmc_retune_needed(host);
+ }
return 0;
}
--
1.9.1
--
To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
