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video: driver: access buffers list under lock only

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Do not access buffers list of an instance without
acquiring its instance lock in msm_vidc_set_clocks()
and msm_vidc_set_buses().

Change-Id: Ic7e8e15eaddca3b77bd4eccc6b728de20d3bcc78
Signed-off-by: Maheshwar Ajja <majja@codeaurora.org>
This commit is contained in:
Maheshwar Ajja
2021-03-30 14:51:40 -07:00
committed by Mihir Ganu
parent 4a6b6797e5
commit e1af4fd098
2 changed files with 8 additions and 15 deletions
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1
driver/vidc/inc/msm_vidc_inst.h
View File

@@ -140,6 +140,7 @@ struct msm_vidc_inst {
bool active;
u64 last_qbuf_time_ns;
bool vb2q_init;
u32 max_input_data_size;
};
#endif // _MSM_VIDC_INST_H_

22
driver/vidc/src/msm_vidc_power.c
View File

@@ -162,13 +162,8 @@ static int msm_vidc_set_buses(struct msm_vidc_inst* inst)
mutex_lock(&core->lock);
curr_time_ns = ktime_get_ns();
list_for_each_entry(temp, &core->instances, list) {
struct msm_vidc_buffer *vbuf, *next;
u32 data_size = 0;
/* TODO: accessing temp without lock */
list_for_each_entry_safe(vbuf, next, &temp->buffers.input.list, list)
data_size = max(data_size, vbuf->data_size);
if (!data_size)
/* skip no input data sessions */
if (!temp->max_input_data_size)
continue;
/* skip inactive session bus bandwidth */
@@ -223,6 +218,7 @@ int msm_vidc_scale_buses(struct msm_vidc_inst *inst)
list_for_each_entry(vbuf, &inst->buffers.input.list, list)
data_size = max(data_size, vbuf->data_size);
inst->max_input_data_size = data_size;
if (!data_size)
return 0;
@@ -325,8 +321,7 @@ int msm_vidc_set_clocks(struct msm_vidc_inst* inst)
struct msm_vidc_core* core;
struct msm_vidc_inst* temp;
u64 freq;
u64 rate = 0;
u32 data_size;
u64 rate = 0;
bool increment, decrement;
u64 curr_time_ns;
int i = 0;
@@ -347,12 +342,8 @@ int msm_vidc_set_clocks(struct msm_vidc_inst* inst)
freq = 0;
curr_time_ns = ktime_get_ns();
list_for_each_entry(temp, &core->instances, list) {
struct msm_vidc_buffer* vbuf, *next;
data_size = 0;
list_for_each_entry_safe(vbuf, next, &temp->buffers.input.list, list)
data_size = max(data_size, vbuf->data_size);
if (!data_size)
/* skip no input data sessions */
if (!temp->max_input_data_size)
continue;
/* skip inactive session clock rate */
@@ -507,6 +498,7 @@ int msm_vidc_scale_clocks(struct msm_vidc_inst *inst)
list_for_each_entry(vbuf, &inst->buffers.input.list, list)
data_size = max(data_size, vbuf->data_size);
inst->max_input_data_size = data_size;
if (!data_size)
return 0;