diff options
| author | Mohit Aggarwal <maggarwa@codeaurora.org> | 2016-04-06 14:45:35 +0530 |
|---|---|---|
| committer | Gerrit - the friendly Code Review server <code-review@localhost> | 2016-09-12 02:58:16 -0700 |
| commit | de93e6c399bf8336230fc76d9cb08ba6f25e2790 (patch) | |
| tree | e59bb8e3b458d85e0e07ae58c5b9843fc73ae826 | |
| parent | 911e592fdc0d6c8f63ea2aec181122a5621d4cee (diff) | |
memshare: Synchronize memory allocation and free operations
Currently, on Modem SSR, memshare driver receives notification
in which it free up the allocated memory. Due to timing issue,
free is happening after allocation. This patch synchronize
these operations.
Change-Id: I464d3b82f33ccdfd0988ef33fec8414d4ab4a550
Signed-off-by: Mohit Aggarwal <maggarwa@codeaurora.org>
| -rw-r--r-- | drivers/soc/qcom/memshare/msm_memshare.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/soc/qcom/memshare/msm_memshare.c b/drivers/soc/qcom/memshare/msm_memshare.c index f44f6f97ecdd..e1e91f56526d 100644 --- a/drivers/soc/qcom/memshare/msm_memshare.c +++ b/drivers/soc/qcom/memshare/msm_memshare.c @@ -203,6 +203,7 @@ static int modem_notifier_cb(struct notifier_block *this, unsigned long code, int dest_vmids[1] = {VMID_HLOS}; int dest_perms[1] = {PERM_READ|PERM_WRITE}; + mutex_lock(&memsh_drv->mem_share); switch (code) { case SUBSYS_BEFORE_SHUTDOWN: @@ -264,6 +265,7 @@ static int modem_notifier_cb(struct notifier_block *this, unsigned long code, break; } + mutex_unlock(&memsh_drv->mem_share); return NOTIFY_DONE; } |