From: Adrian Hunter <adrian.hunter@xxxxxxxxx>
We don't want to claim/release host during a panic dump.
Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Signed-off-by: Irina Tirdea <irina.tirdea@xxxxxxxxx>
---
drivers/mmc/core/core.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 06c42cf..dbe5332 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -767,6 +767,9 @@ int __mmc_claim_host(struct mmc_host *host, atomic_t *abort)
unsigned long flags;
int stop;
+ if (mmc_am_panic_task(host))
+ return 0;
+
might_sleep();
add_wait_queue(&host->wq, &wait);
@@ -807,6 +810,9 @@ int mmc_try_claim_host(struct mmc_host *host)
int claimed_host = 0;
unsigned long flags;
+ if (mmc_am_panic_task(host))
+ return 1;
+
spin_lock_irqsave(&host->lock, flags);
if (!host->claimed || host->claimer == current) {
host->claimed = 1;
@@ -837,6 +843,9 @@ void mmc_release_host(struct mmc_host *host)
if (host->ops->disable && host->claim_cnt == 1)
host->ops->disable(host);
+ if (mmc_am_panic_task(host))
+ return;
+
spin_lock_irqsave(&host->lock, flags);
if (--host->claim_cnt) {
/* Release for nested claim */
--
1.7.9.5
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