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ANDROID: GKI: pci: add Android ABI padding to some structures 

Try to mitigate potential future driver core api changes by adding a
padding to struct pci_sriov, struct pci_dev, struct pci_bus, and struct
pci_driver.

Based on a change made to the RHEL/CENTOS 8 kernel.

Bug: 151154716
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I236df60165b25a33b06fc81f76014162401ba742
This commit is contained in:
Greg Kroah-Hartman 2020-05-01 16:37:30 +02:00 committed by Carlos Llamas
parent 4e079c929f
commit 804026210f
2 changed files with 22 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/pci/pci.h
View File

@ -3,6 +3,7 @@
#define DRIVERS_PCI_H
#include <linux/pci.h>
#include <linux/android_kabi.h>
/* Number of possible devfns: 0.0 to 1f.7 inclusive */
#define MAX_NR_DEVFNS 256
@ -339,6 +340,11 @@ struct pci_sriov {
u16 subsystem_device; /* VF subsystem device */
resource_size_t barsz[PCI_SRIOV_NUM_BARS]; /* VF BAR size */
bool drivers_autoprobe; /* Auto probing of VFs by driver */
ANDROID_KABI_RESERVE(1);
ANDROID_KABI_RESERVE(2);
ANDROID_KABI_RESERVE(3);
ANDROID_KABI_RESERVE(4);
};
/**

16
include/linux/pci.h
View File

@ -41,6 +41,7 @@
#include <uapi/linux/pci.h>
#include <linux/pci_ids.h>
#include <linux/android_kabi.h>
#define PCI_STATUS_ERROR_BITS (PCI_STATUS_DETECTED_PARITY | \
PCI_STATUS_SIG_SYSTEM_ERROR | \
@ -510,6 +511,11 @@ struct pci_dev {
/* These methods index pci_reset_fn_methods[] */
u8 reset_methods[PCI_NUM_RESET_METHODS]; /* In priority order */
ANDROID_KABI_RESERVE(1);
ANDROID_KABI_RESERVE(2);
ANDROID_KABI_RESERVE(3);
ANDROID_KABI_RESERVE(4);
};
static inline struct pci_dev *pci_physfn(struct pci_dev *dev)
@ -661,6 +667,11 @@ struct pci_bus {
struct bin_attribute *legacy_mem; /* Legacy mem */
unsigned int is_added:1;
unsigned int unsafe_warn:1; /* warned about RW1C config write */
ANDROID_KABI_RESERVE(1);
ANDROID_KABI_RESERVE(2);
ANDROID_KABI_RESERVE(3);
ANDROID_KABI_RESERVE(4);
};
#define to_pci_bus(n) container_of(n, struct pci_bus, dev)
@ -909,6 +920,11 @@ struct pci_driver {
const struct attribute_group **dev_groups;
struct device_driver driver;
struct pci_dynids dynids;
ANDROID_KABI_RESERVE(1);
ANDROID_KABI_RESERVE(2);
ANDROID_KABI_RESERVE(3);
ANDROID_KABI_RESERVE(4);
};
#define to_pci_driver(drv) container_of(drv, struct pci_driver, driver)