intel-pinctrl for v5.12-3

* Check if device is present, which is not the case in Xen
 
 The following is an automated git shortlog grouped by driver:
 
 intel:
  -  check REVID register value for device presence
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEqaflIX74DDDzMJJtb7wzTHR8rCgFAmBh6fAACgkQb7wzTHR8
 rCimjg//d49PcsoA9JDX1LCBDohjTyfrNn9TkN8nevF604AlKyuHCIr/oXm5wapy
 C3CeDd3PTD+2ciqApCZod5QXesdDZX9GkFRIVtJ3nO2+MpzPckWCU1UHstvwnDcr
 ZkSl7XS1LQAxzHNOHR2Bk3krk5bvWpKBPjYAtcmlXo48T2qKTK/pcG3GdnzpI6KX
 9HDigNIIS6SNyCV6WbF2g6J2TbncDNuqSKBIjXiFF79YVT1g042Bek5tv7rRVhoV
 jAFKEpNaL1b+O1c+WlKXZweZv1w3Qoi36LFAxFXawSIaTmDWFRTLXVkPmyaxl9k3
 378uPnlKyvWbw9ZfCttDOup5zjFM7ocQy3exLYJhZLSwBYoqiXze/H/EiQYSEagR
 ZLNwLvD680+Gfw3DhizoxJv6NqS6Zydhfhfsh+88VKTYZ3Rba47B/ofYTaNd8VxQ
 NYj998YgAILgL4oiJ4is47THM0f9qczTxsRRnE4YnDmK9ty4E1yHidgZC+JeoFv8
 Hr+XES5gNwQ88svrSOrQMkRi6KQQ7jKaKfcbDqgqq6zO1O7DYfT8RGOcUaInaCje
 U75suuYoN9+YVrdVA6LntMV5uI/Y0gUSUQ8rpSOY3Dmtnmgz+0B0e+1/JScm0KYF
 6umagarrHf1HYSbW4FxavNfgDYaLadJzCKv95DiO3mYr3ygppXU=
 =s7pI
 -----END PGP SIGNATURE-----

Merge tag 'intel-pinctrl-v5.12-3' of gitolite.kernel.org:pub/scm/linux/kernel/git/pinctrl/intel into fixes

intel-pinctrl for v5.12-3

* Check if device is present, which is not the case in Xen

The following is an automated git shortlog grouped by driver:

intel:
 -  check REVID register value for device presence

drivers/pinctrl/intel/pinctrl-intel.c

@@ -1493,8 +1493,13 @@ static int intel_pinctrl_probe(struct platform_device *pdev,
 		if (IS_ERR(regs))
 			return PTR_ERR(regs);
 
-		/* Determine community features based on the revision */
+		/*
+		 * Determine community features based on the revision.
+		 * A value of all ones means the device is not present.
+		 */
 		value = readl(regs + REVID);
+		if (value == ~0u)
+			return -ENODEV;
 		if (((value & REVID_MASK) >> REVID_SHIFT) >= 0x94) {
 			community->features |= PINCTRL_FEATURE_DEBOUNCE;
 			community->features |= PINCTRL_FEATURE_1K_PD;