diff options
Diffstat (limited to 'drivers/media/platform/s5p-mfc/s5p_mfc_pm.c')
| -rw-r--r-- | drivers/media/platform/s5p-mfc/s5p_mfc_pm.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_pm.c b/drivers/media/platform/s5p-mfc/s5p_mfc_pm.c index 5f97a3398c11..930dc2dddae6 100644 --- a/drivers/media/platform/s5p-mfc/s5p_mfc_pm.c +++ b/drivers/media/platform/s5p-mfc/s5p_mfc_pm.c @@ -54,6 +54,7 @@ int s5p_mfc_init_pm(struct s5p_mfc_dev *dev) pm->clock = clk_get(&dev->plat_dev->dev, MFC_SCLK_NAME); if (IS_ERR(pm->clock)) { mfc_info("Failed to get MFC special clock control\n"); + pm->clock = NULL; } else { clk_set_rate(pm->clock, MFC_SCLK_RATE); ret = clk_prepare_enable(pm->clock); @@ -76,8 +77,10 @@ int s5p_mfc_init_pm(struct s5p_mfc_dev *dev) err_s_clk: clk_put(pm->clock); + pm->clock = NULL; err_p_ip_clk: clk_put(pm->clock_gate); + pm->clock_gate = NULL; err_g_ip_clk: return ret; } @@ -88,9 +91,11 @@ void s5p_mfc_final_pm(struct s5p_mfc_dev *dev) pm->clock) { clk_disable_unprepare(pm->clock); clk_put(pm->clock); + pm->clock = NULL; } clk_unprepare(pm->clock_gate); clk_put(pm->clock_gate); + pm->clock_gate = NULL; #ifdef CONFIG_PM pm_runtime_disable(pm->device); #endif @@ -98,12 +103,13 @@ void s5p_mfc_final_pm(struct s5p_mfc_dev *dev) int s5p_mfc_clock_on(void) { - int ret; + int ret = 0; #ifdef CLK_DEBUG atomic_inc(&clk_ref); mfc_debug(3, "+ %d\n", atomic_read(&clk_ref)); #endif - ret = clk_enable(pm->clock_gate); + if (!IS_ERR_OR_NULL(pm->clock_gate)) + ret = clk_enable(pm->clock_gate); return ret; } @@ -113,7 +119,8 @@ void s5p_mfc_clock_off(void) atomic_dec(&clk_ref); mfc_debug(3, "- %d\n", atomic_read(&clk_ref)); #endif - clk_disable(pm->clock_gate); + if (!IS_ERR_OR_NULL(pm->clock_gate)) + clk_disable(pm->clock_gate); } int s5p_mfc_power_on(void) |