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nvidia: timed out wait for userspace response

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Using this patch we are waiting for 5secs for
response from userspace else we are returning
error.

Bug 3712829

Signed-off-by: Manish Bhardwaj <mbhardwaj@nvidia.com>
Change-Id: I43ee139d4c2f737851ec1cf375e463d7c7c7d6f7
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2760068
Reviewed-by: svcacv <svcacv@nvidia.com>
Reviewed-by: svc_kernel_abi <svc_kernel_abi@nvidia.com>
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Reviewed-by: Preetham Chandru <pchandru@nvidia.com>
Reviewed-by: Sandeep Trasi <strasi@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3261630
Tested-by: Bhavesh Parekh <bparekh@nvidia.com>
Reviewed-by: Bhavesh Parekh <bparekh@nvidia.com>
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
Reviewed-by: svc-bootloader-acv <svc-bootloader-acv@nvidia.com>
This commit is contained in:
Manish Bhardwaj
2022-08-12 12:59:09 +05:30
committed by Jon Hunter
parent cdefe42278
commit f666d39d4d
1 changed files with 13 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/virt/tegra/tegra_hv_pm_ctl.c
View File

@@ -38,6 +38,8 @@
#ifdef CONFIG_PM_SLEEP
#define NETLINK_USERSPACE_PM 30
#define MAX_USER_CLIENT 64
#define USERSPACE_RESPONSE_TIMEOUT msecs_to_jiffies(5000)
static struct sock *nl_sk;
static struct completion netlink_complete;
static spinlock_t netlink_lock;
@@ -1000,7 +1002,11 @@ static int netlink_pm_notify(struct notifier_block *nb,
/*Receive the message from userspace*/
if (user_client_count)
wait_for_completion(&netlink_complete);
if (wait_for_completion_timeout(&netlink_complete,
USERSPACE_RESPONSE_TIMEOUT) == 0) {
dev_err(data->dev, "%s target suspend failed\n", __func__);
return NOTIFY_BAD;
}
break;
case PM_POST_HIBERNATION:
@@ -1018,13 +1024,17 @@ static int netlink_pm_notify(struct notifier_block *nb,
/*Receive the message from userspace*/
if (user_client_count)
wait_for_completion(&netlink_complete);
if (wait_for_completion_timeout(&netlink_complete,
USERSPACE_RESPONSE_TIMEOUT) == 0) {
dev_err(data->dev, "%s target resume failed\n", __func__);
return NOTIFY_BAD;
}
break;
default:
break;
}
return 0;
return NOTIFY_OK;
}
static struct notifier_block netlink_pm_nb = {