drm/msm/mdp: Clear pending interrupt status before enable interrupt
Pending interrupt status needs to be cleared before enable the
interrupt. Otherwise it's possible to get a pending interrupt instead
of an incoming interrupt.
Signed-off-by: Jilai Wang <jilaiw@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
diff --git a/drivers/gpu/drm/msm/mdp/mdp_kms.h b/drivers/gpu/drm/msm/mdp/mdp_kms.h
index 867493d..46a94e7 100644
--- a/drivers/gpu/drm/msm/mdp/mdp_kms.h
+++ b/drivers/gpu/drm/msm/mdp/mdp_kms.h
@@ -30,7 +30,8 @@
struct mdp_kms_funcs {
struct msm_kms_funcs base;
- void (*set_irqmask)(struct mdp_kms *mdp_kms, uint32_t irqmask);
+ void (*set_irqmask)(struct mdp_kms *mdp_kms, uint32_t irqmask,
+ uint32_t old_irqmask);
};
struct mdp_kms {
@@ -42,6 +43,7 @@
bool in_irq;
struct list_head irq_list; /* list of mdp4_irq */
uint32_t vblank_mask; /* irq bits set for userspace vblank */
+ uint32_t cur_irq_mask; /* current irq mask */
};
#define to_mdp_kms(x) container_of(x, struct mdp_kms, base)