diff options
| author | Dmitry Baryshkov <[email protected]> | 2024-04-03 06:10:57 +0300 |
|---|---|---|
| committer | Bjorn Andersson <[email protected]> | 2024-04-21 12:00:10 -0500 |
| commit | 635ce0db89567ba62f64b79e8c6664ba3eff6516 (patch) | |
| tree | 29ea240fd6e7ed7b30c8f8e99d0ec7fcf17d1a96 | |
| parent | 77706838f837785189578bd8fd768e646e63f8c2 (diff) | |
soc: qcom: pmic_glink: don't traverse clients list without a lock
Take the client_lock before traversing the clients list at the
pmic_glink_state_notify_clients() function. This is required to keep the
list traversal safe from concurrent modification.
Fixes: 58ef4ece1e41 ("soc: qcom: pmic_glink: Introduce base PMIC GLINK driver")
Signed-off-by: Dmitry Baryshkov <[email protected]>
Reviewed-by: Andrew Halaney <[email protected]>
Reviewed-by: Mukesh Ojha <[email protected]>
Tested-by: Xilin Wu <[email protected]> # on QCS8550 AYN Odin 2
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Bjorn Andersson <[email protected]>
| -rw-r--r-- | drivers/soc/qcom/pmic_glink.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/soc/qcom/pmic_glink.c b/drivers/soc/qcom/pmic_glink.c index f913e9bd57ed..2b2cdf479654 100644 --- a/drivers/soc/qcom/pmic_glink.c +++ b/drivers/soc/qcom/pmic_glink.c @@ -115,10 +115,12 @@ static int pmic_glink_rpmsg_callback(struct rpmsg_device *rpdev, void *data, hdr = data; + mutex_lock(&pg->client_lock); list_for_each_entry(client, &pg->clients, node) { if (client->id == le32_to_cpu(hdr->owner)) client->cb(data, len, client->priv); } + mutex_unlock(&pg->client_lock); return 0; } @@ -168,8 +170,10 @@ static void pmic_glink_state_notify_clients(struct pmic_glink *pg) } if (new_state != pg->client_state) { + mutex_lock(&pg->client_lock); list_for_each_entry(client, &pg->clients, node) client->pdr_notify(client->priv, new_state); + mutex_unlock(&pg->client_lock); pg->client_state = new_state; } } |