From: Adrian Hunter <adrian.hunter@xxxxxxxxx>
If in panic, wait for task to come into context.
Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Signed-off-by: Irina Tirdea <irina.tirdea@xxxxxxxxx>
---
drivers/mmc/core/core.c | 10 +++++++++-
drivers/mmc/core/host.c | 2 ++
2 files changed, 11 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index d3caa7e..4fd7061 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -252,6 +252,7 @@ mmc_start_request(struct mmc_host *host, struct mmc_request *mrq)
}
mmc_host_clk_hold(host);
led_trigger_event(host->led, LED_FULL);
+ mmc_trap_nonpanic_tasks(host);
host->ops->request(host, mrq);
}
@@ -344,8 +345,10 @@ static void mmc_wait_for_req_done(struct mmc_host *host,
while (1) {
/* Panic task requests must be completed in ->request() */
- if (!mmc_am_panic_task(host))
+ if (!mmc_am_panic_task(host)) {
wait_for_completion(&mrq->completion);
+ mmc_trap_nonpanic_tasks(host);
+ }
cmd = mrq->cmd;
if (!cmd->error || !cmd->retries ||
@@ -774,6 +777,8 @@ int __mmc_claim_host(struct mmc_host *host, atomic_t *abort)
if (mmc_am_panic_task(host))
return 0;
+ else
+ mmc_trap_nonpanic_tasks(host);
might_sleep();
@@ -817,6 +822,8 @@ int mmc_try_claim_host(struct mmc_host *host)
if (mmc_am_panic_task(host))
return 1;
+ else
+ mmc_trap_nonpanic_tasks(host);
spin_lock_irqsave(&host->lock, flags);
if (!host->claimed || host->claimer == current) {
@@ -880,6 +887,7 @@ static inline void mmc_set_ios(struct mmc_host *host)
if (ios->clock > 0)
mmc_set_ungated(host);
+ mmc_trap_nonpanic_tasks(host);
host->ops->set_ios(host, ios);
}
diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c
index 6eda5a1..b76bfc8 100644
--- a/drivers/mmc/core/host.c
+++ b/drivers/mmc/core/host.c
@@ -90,6 +90,8 @@ static void mmc_host_clk_gate_delayed(struct mmc_host *host)
unsigned long freq = host->ios.clock;
unsigned long flags;
+ mmc_trap_nonpanic_tasks(host);
+
if (!freq) {
pr_debug("%s: frequency set to 0 in disable function, "
"this means the clock is already disabled.\n",
--
1.7.9.5
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