6.1-stable review patch. If anyone has any objections, please let me know.
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From: Kaustabh Chakraborty kauschluss@disroot.org
[ Upstream commit e1361a4f1be9cb69a662c6d7b5ce218007d6e82b ]
Condition guards are found to be redundant, as the call flow is properly managed now, as also observed in the Exynos5433 DECON driver. Since state checking is no longer necessary, remove it.
This also fixes an issue which prevented decon_commit() from decon_atomic_enable() due to an incorrect state change setting.
Fixes: 96976c3d9aff ("drm/exynos: Add DECON driver") Cc: stable@vger.kernel.org Suggested-by: Inki Dae inki.dae@samsung.com Signed-off-by: Kaustabh Chakraborty kauschluss@disroot.org Signed-off-by: Inki Dae inki.dae@samsung.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/exynos/exynos7_drm_decon.c | 36 ----------------------------- 1 file changed, 36 deletions(-)
--- a/drivers/gpu/drm/exynos/exynos7_drm_decon.c +++ b/drivers/gpu/drm/exynos/exynos7_drm_decon.c @@ -52,7 +52,6 @@ struct decon_context { void __iomem *regs; unsigned long irq_flags; bool i80_if; - bool suspended; wait_queue_head_t wait_vsync_queue; atomic_t wait_vsync_event;
@@ -106,9 +105,6 @@ static void decon_shadow_protect_win(str
static void decon_wait_for_vblank(struct decon_context *ctx) { - if (ctx->suspended) - return; - atomic_set(&ctx->wait_vsync_event, 1);
/* @@ -184,9 +180,6 @@ static void decon_commit(struct exynos_d struct drm_display_mode *mode = &crtc->base.state->adjusted_mode; u32 val, clkdiv;
- if (ctx->suspended) - return; - /* nothing to do if we haven't set the mode yet */ if (mode->htotal == 0 || mode->vtotal == 0) return; @@ -248,9 +241,6 @@ static int decon_enable_vblank(struct ex struct decon_context *ctx = crtc->ctx; u32 val;
- if (ctx->suspended) - return -EPERM; - if (!test_and_set_bit(0, &ctx->irq_flags)) { val = readl(ctx->regs + VIDINTCON0);
@@ -273,9 +263,6 @@ static void decon_disable_vblank(struct struct decon_context *ctx = crtc->ctx; u32 val;
- if (ctx->suspended) - return; - if (test_and_clear_bit(0, &ctx->irq_flags)) { val = readl(ctx->regs + VIDINTCON0);
@@ -377,9 +364,6 @@ static void decon_atomic_begin(struct ex struct decon_context *ctx = crtc->ctx; int i;
- if (ctx->suspended) - return; - for (i = 0; i < WINDOWS_NR; i++) decon_shadow_protect_win(ctx, i, true); } @@ -399,9 +383,6 @@ static void decon_update_plane(struct ex unsigned int cpp = fb->format->cpp[0]; unsigned int pitch = fb->pitches[0];
- if (ctx->suspended) - return; - /* * SHADOWCON/PRTCON register is used for enabling timing. * @@ -489,9 +470,6 @@ static void decon_disable_plane(struct e unsigned int win = plane->index; u32 val;
- if (ctx->suspended) - return; - /* protect windows */ decon_shadow_protect_win(ctx, win, true);
@@ -510,9 +488,6 @@ static void decon_atomic_flush(struct ex struct decon_context *ctx = crtc->ctx; int i;
- if (ctx->suspended) - return; - for (i = 0; i < WINDOWS_NR; i++) decon_shadow_protect_win(ctx, i, false); exynos_crtc_handle_event(crtc); @@ -540,9 +515,6 @@ static void decon_atomic_enable(struct e struct decon_context *ctx = crtc->ctx; int ret;
- if (!ctx->suspended) - return; - ret = pm_runtime_resume_and_get(ctx->dev); if (ret < 0) { DRM_DEV_ERROR(ctx->dev, "failed to enable DECON device.\n"); @@ -556,8 +528,6 @@ static void decon_atomic_enable(struct e decon_enable_vblank(ctx->crtc);
decon_commit(ctx->crtc); - - ctx->suspended = false; }
static void decon_atomic_disable(struct exynos_drm_crtc *crtc) @@ -565,9 +535,6 @@ static void decon_atomic_disable(struct struct decon_context *ctx = crtc->ctx; int i;
- if (ctx->suspended) - return; - /* * We need to make sure that all windows are disabled before we * suspend that connector. Otherwise we might try to scan from @@ -577,8 +544,6 @@ static void decon_atomic_disable(struct decon_disable_plane(crtc, &ctx->planes[i]);
pm_runtime_put_sync(ctx->dev); - - ctx->suspended = true; }
static const struct exynos_drm_crtc_ops decon_crtc_ops = { @@ -699,7 +664,6 @@ static int decon_probe(struct platform_d return -ENOMEM;
ctx->dev = dev; - ctx->suspended = true;
i80_if_timings = of_get_child_by_name(dev->of_node, "i80-if-timings"); if (i80_if_timings)