samsung-sm8650/android_kernel_samsung_sm8650-modules
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disp: msm: hdcp: abort queued tasks while processing PM suspend

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During suspend, there might be a chance that lib auth work is queued
but not yet started. So during pm cycle it might start execution
before host_init which can lead to noc error while accessing dp_aux
registers. To prevent that set abort flag to abort lib auth work and
set interrupts before host_deinit.

Change-Id: Ie2c3ac9b0846644d3c2b37f410c341659b030c16
Signed-off-by: Rajat Gupta <rajatgu@codeaurora.org>
Signed-off-by: Tatenda Chipeperekwa <tatendac@codeaurora.org>
This commit is contained in:
Rajat Gupta
2020-02-10 14:15:57 +05:30
committad av Tatenda Chipeperekwa
förälder 54365213d1
incheckning 0e1496c718
4 ändrade filer med 47 tillägg och 2 borttagningar
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16
msm/sde_hdcp_1x.c
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@@ -207,6 +207,7 @@ struct sde_hdcp_1x {
bool reauth;
bool ksv_ready;
bool force_encryption;
atomic_t abort;
enum sde_hdcp_state hdcp_state;
struct HDCP_V2V1_MSG_TOPOLOGY current_tp;
struct delayed_work hdcp_auth_work;
@@ -1040,7 +1041,7 @@ static void sde_hdcp_1x_update_auth_status(struct sde_hdcp_1x *hdcp)
static void sde_hdcp_1x_auth_work(struct work_struct *work)
{
int rc;
int rc = 0;
struct delayed_work *dw = to_delayed_work(work);
struct sde_hdcp_1x *hdcp = container_of(dw,
struct sde_hdcp_1x, hdcp_auth_work);
@@ -1056,6 +1057,9 @@ static void sde_hdcp_1x_auth_work(struct work_struct *work)
return;
}
if (atomic_read(&hdcp->abort))
goto end;
hdcp->sink_r0_ready = false;
hdcp->reauth = false;
hdcp->ksv_ready = false;
@@ -1484,6 +1488,15 @@ irq_not_handled:
return -EINVAL;
}
static void sde_hdcp_1x_abort(void *data, bool abort)
{
struct sde_hdcp_1x *hdcp = data;
atomic_set(&hdcp->abort, abort);
cancel_delayed_work_sync(&hdcp->hdcp_auth_work);
flush_workqueue(hdcp->workq);
}
void *sde_hdcp_1x_init(struct sde_hdcp_init_data *init_data)
{
struct sde_hdcp_1x *hdcp = NULL;
@@ -1496,6 +1509,7 @@ void *sde_hdcp_1x_init(struct sde_hdcp_init_data *init_data)
.feature_supported = sde_hdcp_1x_feature_supported,
.force_encryption = sde_hdcp_1x_force_encryption,
.sink_support = sde_hdcp_1x_sink_support,
.abort = sde_hdcp_1x_abort,
.off = sde_hdcp_1x_off
};