From: Adrian Hunter <adrian.hunter@xxxxxxxxx>
We want to avoid it while panic dumping.
Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Signed-off-by: Irina Tirdea <irina.tirdea@xxxxxxxxx>
---
drivers/mmc/core/core.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 4fd7061..3daec19 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -1418,6 +1418,11 @@ static inline void mmc_bus_get(struct mmc_host *host)
{
unsigned long flags;
+ if (mmc_am_panic_task(host)) {
+ host->bus_refs++;
+ return;
+ }
+
spin_lock_irqsave(&host->lock, flags);
host->bus_refs++;
spin_unlock_irqrestore(&host->lock, flags);
@@ -1431,6 +1436,11 @@ static inline void mmc_bus_put(struct mmc_host *host)
{
unsigned long flags;
+ if (mmc_am_panic_task(host)) {
+ host->bus_refs--;
+ return;
+ }
+
spin_lock_irqsave(&host->lock, flags);
host->bus_refs--;
if ((host->bus_refs == 0) && host->bus_ops)
--
1.7.9.5
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