/* * Copyright (c) 2015 MediaTek, Shunli Wang * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #ifndef _DT_BINDINGS_RESET_CONTROLLER_MT2701 #define _DT_BINDINGS_RESET_CONTROLLER_MT2701 /* INFRACFG resets */ #define MT2701_INFRA_EMI_REG_RST 0 #define MT2701_INFRA_DRAMC0_A0_RST 1 #define MT2701_INFRA_FHCTL_RST 2 #define MT2701_INFRA_APCIRQ_EINT_RST 3 #define MT2701_INFRA_APXGPT_RST 4 #define MT2701_INFRA_SCPSYS_RST 5 #define MT2701_INFRA_KP_RST 6 #define MT2701_INFRA_PMIC_WRAP_RST 7 #define MT2701_INFRA_MIPI_RST 8 #define MT2701_INFRA_IRRX_RST 9 #define MT2701_INFRA_CEC_RST 10 #define MT2701_INFRA_EMI_RST 32 #define MT2701_INFRA_DRAMC0_RST 34 #define MT2701_INFRA_TRNG_RST 37 #define MT2701_INFRA_SYSIRQ_RST 38 /* PERICFG resets */ #define MT2701_PERI_UART0_SW_RST 0 #define MT2701_PERI_UART1_SW_RST 1 #define MT2701_PERI_UART2_SW_RST 2 #define MT2701_PERI_UART3_SW_RST 3 #define MT2701_PERI_GCPU_SW_RST 5 #define MT2701_PERI_BTIF_SW_RST 6 #define MT2701_PERI_PWM_SW_RST 8 #define MT2701_PERI_AUXADC_SW_RST 10 #define MT2701_PERI_DMA_SW_RST 11 #define MT2701_PERI_NFI_SW_RST 14 #define MT2701_PERI_NLI_SW_RST 15 #define MT2701_PERI_THERM_SW_RST 16 #define MT2701_PERI_MSDC2_SW_RST 17 #define MT2701_PERI_MSDC0_SW_RST 19 #define MT2701_PERI_MSDC1_SW_RST 20 #define MT2701_PERI_I2C0_SW_RST 22 #define MT2701_PERI_I2C1_SW_RST 23 #define MT2701_PERI_I2C2_SW_RST 24 #define MT2701_PERI_I2C3_SW_RST 25 #define MT2701_PERI_USB_SW_RST 28 #define MT2701_PERI_ETH_SW_RST 29 #define MT2701_PERI_SPI0_SW_RST 33 /* TOPRGU resets */ #define MT2701_TOPRGU_INFRA_RST 0 #define MT2701_TOPRGU_MM_RST 1 #define MT2701_TOPRGU_MFG_RST 2 #define MT2701_TOPRGU_ETHDMA_RST 3 #define MT2701_TOPRGU_VDEC_RST 4 #define MT2701_TOPRGU_VENC_IMG_RST 5 #define MT2701_TOPRGU_DDRPHY_RST 6 #define MT2701_TOPRGU_MD_RST 7 #define MT2701_TOPRGU_INFRA_AO_RST 8 #define MT2701_TOPRGU_CONN_RST 9 #define MT2701_TOPRGU_APMIXED_RST 10 #define MT2701_TOPRGU_HIFSYS_RST 11 #define MT2701_TOPRGU_CONN_MCU_RST 12 #define MT2701_TOPRGU_BDP_DISP_RST 13 /* HIFSYS resets */ #define MT2701_HIFSYS_UHOST0_RST 3 #define MT2701_HIFSYS_UHOST1_RST 4 #define MT2701_HIFSYS_UPHY0_RST 21 #define MT2701_HIFSYS_UPHY1_RST 22 #define MT2701_HIFSYS_PCIE0_RST 24 #define MT2701_HIFSYS_PCIE1_RST 25 #define MT2701_HIFSYS_PCIE2_RST 26 #endif /* _DT_BINDINGS_RESET_CONTROLLER_MT2701 */ it' value='search'/>
path: root/net/rxrpc/conn_service.c
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authorBjorn Helgaas <bhelgaas@google.com>2017-01-27 15:00:45 -0600
committerBjorn Helgaas <bhelgaas@google.com>2017-01-27 15:00:45 -0600
commit030305d69fc6963c16003f50d7e8d74b02d0a143 (patch)
tree363a4e34d199178769b7e7eeb26ea2620a55847b /net/rxrpc/conn_service.c
parent4d191b1b63c209e37bf27938ef365244d3c41084 (diff)
PCI/ASPM: Handle PCI-to-PCIe bridges as roots of PCIe hierarchies
In a struct pcie_link_state, link->root points to the pcie_link_state of the root of the PCIe hierarchy. For the topmost link, this points to itself (link->root = link). For others, we copy the pointer from the parent (link->root = link->parent->root). Previously we recognized that Root Ports originated PCIe hierarchies, but we treated PCI/PCI-X to PCIe Bridges as being in the middle of the hierarchy, and when we tried to copy the pointer from link->parent->root, there was no parent, and we dereferenced a NULL pointer: BUG: unable to handle kernel NULL pointer dereference at 0000000000000090 IP: [<ffffffff9e424350>] pcie_aspm_init_link_state+0x170/0x820 Recognize that PCI/PCI-X to PCIe Bridges originate PCIe hierarchies just like Root Ports do, so link->root for these devices should also point to itself. Fixes: 51ebfc92b72b ("PCI: Enumerate switches below PCI-to-PCIe bridges") Link: https://bugzilla.kernel.org/show_bug.cgi?id=193411 Link: https://bugzilla.opensuse.org/show_bug.cgi?id=1022181 Tested-by: lists@ssl-mail.com Tested-by: Jayachandran C. <jnair@caviumnetworks.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> CC: stable@vger.kernel.org # v4.2+
Diffstat (limited to 'net/rxrpc/conn_service.c')