From: Jerry Huang <Chang-Ming.Huang@xxxxxxxxxxxxx>
Before running get_cd() recall function to detect whether the card is
present, must make sure the power is up.
Signed-off-by: Jerry Huang <Chang-Ming.Huang@xxxxxxxxxxxxx>
CC: Chris Ball <cjb@xxxxxxxxxx>
---
changes for v2:
- add the CC
changes for v3:
- use power_up/off only when get_cd defined
drivers/mmc/core/core.c | 10 ++++++++--
1 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 5278ffb..a863a41 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -2066,8 +2066,14 @@ void mmc_rescan(struct work_struct *work)
*/
mmc_bus_put(host);
- if (host->ops->get_cd && host->ops->get_cd(host) == 0)
- goto out;
+ if (host->ops->get_cd) {
+ int err;
+ mmc_power_up(host);
+ err = host->ops->get_cd(host);
+ mmc_power_off(host);
+ if (err == 0)
+ goto out;
+ }
mmc_claim_host(host);
for (i = 0; i < ARRAY_SIZE(freqs); i++) {
--
1.7.5.4
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