diff -aur linux-4.2.pristine/drivers/i2c/busses/i2c-designware-platdrv.c linux-4.2.yoga/drivers/i2c/busses/i2c-designware-platdrv.c
--- linux-4.2.pristine/drivers/i2c/busses/i2c-designware-platdrv.c	2015-11-21 21:28:07.384822867 +0100
+++ linux-4.2.yoga/drivers/i2c/busses/i2c-designware-platdrv.c	2015-11-21 21:36:19.949456905 +0100
@@ -110,6 +110,7 @@
 	dw_i2c_acpi_params(pdev, "SSCN", &dev->ss_hcnt, &dev->ss_lcnt, NULL);
 	dw_i2c_acpi_params(pdev, "FMCN", &dev->fs_hcnt, &dev->fs_lcnt,
 			   &dev->sda_hold_time);
+	dev->sda_hold_time = 30;
 
 	/*
 	 * Provide a way for Designware I2C host controllers that are not
diff -aur linux-4.2.pristine/drivers/net/wireless/iwlwifi/pcie/drv.c linux-4.2.yoga/drivers/net/wireless/iwlwifi/pcie/drv.c
--- linux-4.2.pristine/drivers/net/wireless/iwlwifi/pcie/drv.c	2015-08-30 20:34:09.000000000 +0200
+++ linux-4.2.yoga/drivers/net/wireless/iwlwifi/pcie/drv.c	2015-11-21 21:32:17.757131582 +0100
@@ -425,7 +425,7 @@
 	{IWL_PCI_DEVICE(0x24F3, 0x1050, iwl8260_2ac_cfg)},
 	{IWL_PCI_DEVICE(0x24F3, 0x0150, iwl8260_2ac_cfg)},
 	{IWL_PCI_DEVICE(0x24F4, 0x0030, iwl8260_2ac_cfg)},
-	{IWL_PCI_DEVICE(0x24F4, 0x1130, iwl8260_2ac_cfg)},
+	{IWL_PCI_DEVICE(0x24F3, 0x1130, iwl8260_2ac_cfg)},
 	{IWL_PCI_DEVICE(0x24F4, 0x1030, iwl8260_2ac_cfg)},
 	{IWL_PCI_DEVICE(0x24F3, 0xC010, iwl8260_2ac_cfg)},
 	{IWL_PCI_DEVICE(0x24F3, 0xC110, iwl8260_2ac_cfg)},
diff -aur linux-4.2.pristine/drivers/platform/x86/ideapad-laptop.c linux-4.2.yoga/drivers/platform/x86/ideapad-laptop.c
--- linux-4.2.pristine/drivers/platform/x86/ideapad-laptop.c	2015-11-21 21:28:07.414822745 +0100
+++ linux-4.2.yoga/drivers/platform/x86/ideapad-laptop.c	2015-11-21 21:34:45.496518414 +0100
@@ -866,6 +866,13 @@
 			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 3 Pro-1370"),
 		},
 	},
+	{
+		.ident = "Lenovo YOGA 900",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 900"),
+		},
+	},
 	{}
 };