drm/i915: Free all DMC payloads

Free all the DMC payloads, not just DMC_MAIN.

unreferenced object 0xffff88ff32d4d800 (size 1024):
  comm "kworker/1:5", pid 701, jiffies 4294904239 (age 109.736s)
  hex dump (first 32 bytes):
    40 40 00 0c 03 00 00 00 00 00 00 00 00 00 00 00  @@..............
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<00000000ba9d0d95>] dmc_load_work_fn+0x34d/0x510 [i915]
    [<000000001049fcab>] process_one_work+0x261/0x550
    [<00000000eeb995ac>] worker_thread+0x49/0x3c0
    [<0000000021031dc3>] kthread+0x10b/0x140
    [<000000004a0f69ee>] ret_from_fork+0x1f/0x30
unreferenced object 0xffff88ff0bde4000 (size 1024):
  comm "kworker/0:3", pid 708, jiffies 4294904469 (age 108.816s)
  hex dump (first 32 bytes):
    40 40 00 0c 01 00 00 00 00 00 00 00 00 00 00 00  @@..............
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<00000000ba9d0d95>] dmc_load_work_fn+0x34d/0x510 [i915]
    [<000000001049fcab>] process_one_work+0x261/0x550
    [<00000000eeb995ac>] worker_thread+0x49/0x3c0
    [<0000000021031dc3>] kthread+0x10b/0x140
    [<000000004a0f69ee>] ret_from_fork+0x1f/0x30

Fixes: 3d5928a ("drm/i915/xelpd: Pipe A DMC plugging")
Cc: Anusha Srivatsa <[email protected]>
Cc: José Roberto de Souza <[email protected]>
Signed-off-by: Chris Wilson <[email protected]>
Signed-off-by: Lucas De Marchi <[email protected]>
Reviewed-by: José Roberto de Souza <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
(cherry picked from commit 064b877)
Signed-off-by: Jani Nikula <[email protected]>

Author: ickle

drivers/gpu/drm/i915/display/intel_dmc.c

@@ -805,11 +805,14 @@ void intel_dmc_ucode_resume(struct drm_i915_private *dev_priv)
  */
 void intel_dmc_ucode_fini(struct drm_i915_private *dev_priv)
 {
+	int id;
+
 	if (!HAS_DMC(dev_priv))
 		return;
 
 	intel_dmc_ucode_suspend(dev_priv);
 	drm_WARN_ON(&dev_priv->drm, dev_priv->dmc.wakeref);
 
-	kfree(dev_priv->dmc.dmc_info[DMC_FW_MAIN].payload);
+	for (id = 0; id < DMC_FW_MAX; id++)
+		kfree(dev_priv->dmc.dmc_info[id].payload);
 }