e5f091664d
Changes in 4.9.250 x86/entry/64: Add instruction suffix ALSA: hda/ca0132 - Fix work handling in delayed HP detection ALSA: usb-audio: simplify set_sync_ep_implicit_fb_quirk ALSA: usb-audio: fix sync-ep altsetting sanity check ALSA: hda/realtek - Support Dell headset mode for ALC3271 ALSA: hda - Fix a wrong FIXUP for alc289 on Dell machines ALSA: hda/realtek - Dell headphone has noise on unmute for ALC236 vfio/pci: Move dummy_resources_list init in vfio_pci_probe() s390/dasd: fix hanging device offline processing USB: serial: digi_acceleport: fix write-wakeup deadlocks net: ipv6: keep sk status consistent after datagram connect failure l2tp: fix races with ipv4-mapped ipv6 addresses uapi: move constants from <linux/kernel.h> to <linux/const.h> of: fix linker-section match-table corruption reiserfs: add check for an invalid ih_entry_count misc: vmw_vmci: fix kernel info-leak by initializing dbells in vmci_ctx_get_chkpt_doorbells() media: gp8psk: initialize stats at power control logic ALSA: seq: Use bool for snd_seq_queue internal flags module: set MODULE_STATE_GOING state when a module fails to load quota: Don't overflow quota file offsets powerpc: sysdev: add missing iounmap() on error in mpic_msgr_probe() module: delay kobject uevent until after module init call kdev_t: always inline major/minor helper functions xen/xenbus: Allow watches discard events before queueing xen/xenbus: Add 'will_handle' callback support in xenbus_watch_path() xen/xenbus/xen_bus_type: Support will_handle watch callback xen/xenbus: Count pending messages for each watch xenbus/xenbus_backend: Disallow pending watch messages iio: bmi160_core: Fix sparse warning due to incorrect type in assignment iio:imu:bmi160: Fix too large a buffer. iio:imu:bmi160: Fix alignment and data leak issues iio:magnetometer:mag3110: Fix alignment and data leak issues. mwifiex: Fix possible buffer overflows in mwifiex_cmd_802_11_ad_hoc_start Linux 4.9.250 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I35cbeaf6b46f036f1d2b60182972163952c9b973
83 lines
1.8 KiB
C
83 lines
1.8 KiB
C
#ifndef _LINUX_KDEV_T_H
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#define _LINUX_KDEV_T_H
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#include <uapi/linux/kdev_t.h>
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#define MINORBITS 20
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#define MINORMASK ((1U << MINORBITS) - 1)
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#define MAJOR(dev) ((unsigned int) ((dev) >> MINORBITS))
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#define MINOR(dev) ((unsigned int) ((dev) & MINORMASK))
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#define MKDEV(ma,mi) (((ma) << MINORBITS) | (mi))
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#define print_dev_t(buffer, dev) \
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sprintf((buffer), "%u:%u\n", MAJOR(dev), MINOR(dev))
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#define format_dev_t(buffer, dev) \
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({ \
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sprintf(buffer, "%u:%u", MAJOR(dev), MINOR(dev)); \
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buffer; \
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})
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/* acceptable for old filesystems */
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static __always_inline bool old_valid_dev(dev_t dev)
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{
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return MAJOR(dev) < 256 && MINOR(dev) < 256;
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}
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static __always_inline u16 old_encode_dev(dev_t dev)
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{
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return (MAJOR(dev) << 8) | MINOR(dev);
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}
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static __always_inline dev_t old_decode_dev(u16 val)
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{
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return MKDEV((val >> 8) & 255, val & 255);
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}
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static __always_inline u32 new_encode_dev(dev_t dev)
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{
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unsigned major = MAJOR(dev);
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unsigned minor = MINOR(dev);
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return (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
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}
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static __always_inline dev_t new_decode_dev(u32 dev)
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{
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unsigned major = (dev & 0xfff00) >> 8;
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unsigned minor = (dev & 0xff) | ((dev >> 12) & 0xfff00);
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return MKDEV(major, minor);
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}
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static __always_inline u64 huge_encode_dev(dev_t dev)
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{
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return new_encode_dev(dev);
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}
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static __always_inline dev_t huge_decode_dev(u64 dev)
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{
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return new_decode_dev(dev);
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}
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static __always_inline int sysv_valid_dev(dev_t dev)
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{
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return MAJOR(dev) < (1<<14) && MINOR(dev) < (1<<18);
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}
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static __always_inline u32 sysv_encode_dev(dev_t dev)
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{
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return MINOR(dev) | (MAJOR(dev) << 18);
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}
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static __always_inline unsigned sysv_major(u32 dev)
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{
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return (dev >> 18) & 0x3fff;
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}
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static __always_inline unsigned sysv_minor(u32 dev)
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{
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return dev & 0x3ffff;
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}
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#endif
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