drm/i915/display/dpll_mgr: Make WARN* drm specific where drm_device ptr is available

drm specific WARN* calls include device information in the
backtrace, so we know what device the warnings originate from.

Covert all the calls of WARN* with device specific drm_WARN*
variants in functions where drm_device or drm_i915_private struct
pointer is readily available.

The conversion was done automatically with below coccinelle semantic
patch. checkpatch errors/warnings are fixed manually.

@rule1@
identifier func, T;
@@
func(...) {
...
struct drm_device *T = ...;
<...
(
-WARN(
+drm_WARN(T,
...)
|
-WARN_ON(
+drm_WARN_ON(T,
...)
|
-WARN_ONCE(
+drm_WARN_ONCE(T,
...)
|
-WARN_ON_ONCE(
+drm_WARN_ON_ONCE(T,
...)
)
...>
}

@rule2@
identifier func, T;
@@
func(struct drm_device *T,...) {
<...
(
-WARN(
+drm_WARN(T,
...)
|
-WARN_ON(
+drm_WARN_ON(T,
...)
|
-WARN_ONCE(
+drm_WARN_ONCE(T,
...)
|
-WARN_ON_ONCE(
+drm_WARN_ON_ONCE(T,
...)
)
...>
}

@rule3@
identifier func, T;
@@
func(...) {
...
struct drm_i915_private *T = ...;
<+...
(
-WARN(
+drm_WARN(&T->drm,
...)
|
-WARN_ON(
+drm_WARN_ON(&T->drm,
...)
|
-WARN_ONCE(
+drm_WARN_ONCE(&T->drm,
...)
|
-WARN_ON_ONCE(
+drm_WARN_ON_ONCE(&T->drm,
...)
)
...+>
}

@rule4@
identifier func, T;
@@
func(struct drm_i915_private *T,...) {
<+...
(
-WARN(
+drm_WARN(&T->drm,
...)
|
-WARN_ON(
+drm_WARN_ON(&T->drm,
...)
|
-WARN_ONCE(
+drm_WARN_ONCE(&T->drm,
...)
|
-WARN_ON_ONCE(
+drm_WARN_ON_ONCE(&T->drm,
...)
)
...+>
}

Signed-off-by: Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200128181603.27767-10-pankaj.laxminarayan.bharadiya@intel.com

diff --git a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
index 13535c5..2e596e8 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
+++ b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
@@ -103,8 +103,8 @@ enum intel_dpll_id
 intel_get_shared_dpll_id(struct drm_i915_private *dev_priv,
                         struct intel_shared_dpll *pll)
 {
-       if (WARN_ON(pll < dev_priv->shared_dplls||
-                   pll > &dev_priv->shared_dplls[dev_priv->num_shared_dpll]))
+       if (drm_WARN_ON(&dev_priv->drm, pll < dev_priv->shared_dplls ||
+                       pll > &dev_priv->shared_dplls[dev_priv->num_shared_dpll]))
                return -1;
 
        return (enum intel_dpll_id) (pll - dev_priv->shared_dplls);
@@ -118,7 +118,8 @@ void assert_shared_dpll(struct drm_i915_private *dev_priv,
        bool cur_state;
        struct intel_dpll_hw_state hw_state;
 
-       if (WARN(!pll, "asserting DPLL %s with no DPLL\n", onoff(state)))
+       if (drm_WARN(&dev_priv->drm, !pll,
+                    "asserting DPLL %s with no DPLL\n", onoff(state)))
                return;
 
        cur_state = pll->info->funcs->get_hw_state(dev_priv, pll, &hw_state);
@@ -140,14 +141,14 @@ void intel_prepare_shared_dpll(const struct intel_crtc_state *crtc_state)
        struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
        struct intel_shared_dpll *pll = crtc_state->shared_dpll;
 
-       if (WARN_ON(pll == NULL))
+       if (drm_WARN_ON(&dev_priv->drm, pll == NULL))
                return;
 
        mutex_lock(&dev_priv->dpll_lock);
-       WARN_ON(!pll->state.crtc_mask);
+       drm_WARN_ON(&dev_priv->drm, !pll->state.crtc_mask);
        if (!pll->active_mask) {
                DRM_DEBUG_DRIVER("setting up %s\n", pll->info->name);
-               WARN_ON(pll->on);
+               drm_WARN_ON(&dev_priv->drm, pll->on);
                assert_shared_dpll_disabled(dev_priv, pll);
 
                pll->info->funcs->prepare(dev_priv, pll);
@@ -169,14 +170,14 @@ void intel_enable_shared_dpll(const struct intel_crtc_state *crtc_state)
        unsigned int crtc_mask = drm_crtc_mask(&crtc->base);
        unsigned int old_mask;
 
-       if (WARN_ON(pll == NULL))
+       if (drm_WARN_ON(&dev_priv->drm, pll == NULL))
                return;
 
        mutex_lock(&dev_priv->dpll_lock);
        old_mask = pll->active_mask;
 
-       if (WARN_ON(!(pll->state.crtc_mask & crtc_mask)) ||
-           WARN_ON(pll->active_mask & crtc_mask))
+       if (drm_WARN_ON(&dev_priv->drm, !(pll->state.crtc_mask & crtc_mask)) ||
+           drm_WARN_ON(&dev_priv->drm, pll->active_mask & crtc_mask))
                goto out;
 
        pll->active_mask |= crtc_mask;
@@ -186,11 +187,11 @@ void intel_enable_shared_dpll(const struct intel_crtc_state *crtc_state)
                      crtc->base.base.id);
 
        if (old_mask) {
-               WARN_ON(!pll->on);
+               drm_WARN_ON(&dev_priv->drm, !pll->on);
                assert_shared_dpll_enabled(dev_priv, pll);
                goto out;
        }
-       WARN_ON(pll->on);
+       drm_WARN_ON(&dev_priv->drm, pll->on);
 
        DRM_DEBUG_KMS("enabling %s\n", pll->info->name);
        pll->info->funcs->enable(dev_priv, pll);
@@ -221,7 +222,7 @@ void intel_disable_shared_dpll(const struct intel_crtc_state *crtc_state)
                return;
 
        mutex_lock(&dev_priv->dpll_lock);
-       if (WARN_ON(!(pll->active_mask & crtc_mask)))
+       if (drm_WARN_ON(&dev_priv->drm, !(pll->active_mask & crtc_mask)))
                goto out;
 
        DRM_DEBUG_KMS("disable %s (active %x, on? %d) for crtc %d\n",
@@ -229,7 +230,7 @@ void intel_disable_shared_dpll(const struct intel_crtc_state *crtc_state)
                      crtc->base.base.id);
 
        assert_shared_dpll_enabled(dev_priv, pll);
-       WARN_ON(!pll->on);
+       drm_WARN_ON(&dev_priv->drm, !pll->on);
 
        pll->active_mask &= ~crtc_mask;
        if (pll->active_mask)
@@ -256,7 +257,7 @@ intel_find_shared_dpll(struct intel_atomic_state *state,
 
        shared_dpll = intel_atomic_get_shared_dpll_state(&state->base);
 
-       WARN_ON(dpll_mask & ~(BIT(I915_NUM_PLLS) - 1));
+       drm_WARN_ON(&dev_priv->drm, dpll_mask & ~(BIT(I915_NUM_PLLS) - 1));
 
        for_each_set_bit(i, &dpll_mask, I915_NUM_PLLS) {
                pll = &dev_priv->shared_dplls[i];
@@ -1100,7 +1101,7 @@ static bool skl_ddi_dpll0_get_hw_state(struct drm_i915_private *dev_priv,
 
        /* DPLL0 is always enabled since it drives CDCLK */
        val = intel_de_read(dev_priv, regs[id].ctl);
-       if (WARN_ON(!(val & LCPLL_PLL_ENABLE)))
+       if (drm_WARN_ON(&dev_priv->drm, !(val & LCPLL_PLL_ENABLE)))
                goto out;
 
        val = intel_de_read(dev_priv, DPLL_CTRL1);
@@ -3791,7 +3792,7 @@ void intel_shared_dpll_init(struct drm_device *dev)
        dpll_info = dpll_mgr->dpll_info;
 
        for (i = 0; dpll_info[i].name; i++) {
-               WARN_ON(i != dpll_info[i].id);
+               drm_WARN_ON(dev, i != dpll_info[i].id);
                dev_priv->shared_dplls[i].info = &dpll_info[i];
        }
 
@@ -3828,7 +3829,7 @@ bool intel_reserve_shared_dplls(struct intel_atomic_state *state,
        struct drm_i915_private *dev_priv = to_i915(state->base.dev);
        const struct intel_dpll_mgr *dpll_mgr = dev_priv->dpll_mgr;
 
-       if (WARN_ON(!dpll_mgr))
+       if (drm_WARN_ON(&dev_priv->drm, !dpll_mgr))
                return false;
 
        return dpll_mgr->get_dplls(state, crtc, encoder);
@@ -3880,7 +3881,7 @@ void intel_update_active_dpll(struct intel_atomic_state *state,
        struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
        const struct intel_dpll_mgr *dpll_mgr = dev_priv->dpll_mgr;
 
-       if (WARN_ON(!dpll_mgr))
+       if (drm_WARN_ON(&dev_priv->drm, !dpll_mgr))
                return;
 
        dpll_mgr->update_active_dpll(state, crtc, encoder);