/* * omap-mcpdm.h * * Copyright (C) 2009 - 2011 Texas Instruments * * Contact: Misael Lopez Cruz * * 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. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA * */ #ifndef __OMAP_MCPDM_H__ #define __OMAP_MCPDM_H__ #define MCPDM_REG_REVISION 0x00 #define MCPDM_REG_SYSCONFIG 0x10 #define MCPDM_REG_IRQSTATUS_RAW 0x24 #define MCPDM_REG_IRQSTATUS 0x28 #define MCPDM_REG_IRQENABLE_SET 0x2C #define MCPDM_REG_IRQENABLE_CLR 0x30 #define MCPDM_REG_IRQWAKE_EN 0x34 #define MCPDM_REG_DMAENABLE_SET 0x38 #define MCPDM_REG_DMAENABLE_CLR 0x3C #define MCPDM_REG_DMAWAKEEN 0x40 #define MCPDM_REG_CTRL 0x44 #define MCPDM_REG_DN_DATA 0x48 #define MCPDM_REG_UP_DATA 0x4C #define MCPDM_REG_FIFO_CTRL_DN 0x50 #define MCPDM_REG_FIFO_CTRL_UP 0x54 #define MCPDM_REG_DN_OFFSET 0x58 /* * MCPDM_IRQ bit fields * IRQSTATUS_RAW, IRQSTATUS, IRQENABLE_SET, IRQENABLE_CLR */ #define MCPDM_DN_IRQ (1 << 0) #define MCPDM_DN_IRQ_EMPTY (1 << 1) #define MCPDM_DN_IRQ_ALMST_EMPTY (1 << 2) #define MCPDM_DN_IRQ_FULL (1 << 3) #define MCPDM_UP_IRQ (1 << 8) #define MCPDM_UP_IRQ_EMPTY (1 << 9) #define MCPDM_UP_IRQ_ALMST_FULL (1 << 10) #define MCPDM_UP_IRQ_FULL (1 << 11) #define MCPDM_DOWNLINK_IRQ_MASK 0x00F #define MCPDM_UPLINK_IRQ_MASK 0xF00 /* * MCPDM_DMAENABLE bit fields */ #define MCPDM_DMA_DN_ENABLE (1 << 0) #define MCPDM_DMA_UP_ENABLE (1 << 1) /* * MCPDM_CTRL bit fields */ #define MCPDM_PDM_UPLINK_EN(x) (1 << (x - 1)) /* ch1 is at bit 0 */ #define MCPDM_PDM_DOWNLINK_EN(x) (1 << (x + 2)) /* ch1 is at bit 3 */ #define MCPDM_PDMOUTFORMAT (1 << 8) #define MCPDM_CMD_INT (1 << 9) #define MCPDM_STATUS_INT (1 << 10) #define MCPDM_SW_UP_RST (1 << 11) #define MCPDM_SW_DN_RST (1 << 12) #define MCPDM_WD_EN (1 << 14) #define MCPDM_PDM_UP_MASK 0x7 #define MCPDM_PDM_DN_MASK (0x1f << 3) #define MCPDM_PDMOUTFORMAT_LJUST (0 << 8) #define MCPDM_PDMOUTFORMAT_RJUST (1 << 8) /* * MCPDM_FIFO_CTRL bit fields */ #define MCPDM_UP_THRES_MAX 0xF #define MCPDM_DN_THRES_MAX 0xF /* * MCPDM_DN_OFFSET bit fields */ #define MCPDM_DN_OFST_RX1_EN (1 << 0) #define MCPDM_DNOFST_RX1(x) ((x & 0x1f) << 1) #define MCPDM_DN_OFST_RX2_EN (1 << 8) #define MCPDM_DNOFST_RX2(x) ((x & 0x1f) << 9) void omap_mcpdm_configure_dn_offsets(struct snd_soc_pcm_runtime *rtd, u8 rx1, u8 rx2); #endif /* End of __OMAP_MCPDM_H__ */ t/commit/fs/adfs/super.c?id=030305d69fc6963c16003f50d7e8d74b02d0a143'>super.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 /fs/adfs/super.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 'fs/adfs/super.c')