[android-common:android16-6.12 1/1] include/uapi/linux/bits.h:9:19: warning: right shift count is negative

tree:   https://android.googlesource.com/kernel/common android16-6.12
head:   c3360dde0a9e76954535eba2b9cb287adf4d6444
commit: 7aae9422d19a266194ce4db6f81bb23b686e1ed3 [1/1] BACKPORT: FROMLIST: irqchip/gic-v3-its: Prepare shadow structures for KVM host deprivilege
config: arm-randconfig-r122-20260815 (https://download.01.org/0day-ci/archive/20260815/[email protected]/config)
compiler: arm-linux-gnueabi-gcc (GCC) 14.3.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260815/[email protected]/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

All warnings (new ones prefixed by >>):

   In file included from include/linux/bits.h:7,
                    from include/linux/ioport.h:13,
                    from include/linux/acpi.h:12,
                    from drivers/irqchip/irq-gic-v3-its.c:7:
   drivers/irqchip/irq-gic-v3-its.c: In function 'its_switch_to_shadow_locked':
>> include/uapi/linux/bits.h:9:19: warning: right shift count is negative [-Wshift-count-negative]
       9 |          (~_UL(0) >> (__BITS_PER_LONG - 1 - (h))))
         |                   ^~
   include/linux/bits.h:69:38: note: in expansion of macro '__GENMASK'
      69 |         (GENMASK_INPUT_CHECK(h, l) + __GENMASK(h, l))
         |                                      ^~~~~~~~~
   drivers/irqchip/irq-gic-v3-its.c:5317:40: note: in expansion of macro 'GENMASK'
    5317 |                 its->tables[i].val &= ~GENMASK(47, 12);
         |                                        ^~~~~~~

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for USB_PHY
   Depends on [n]: USB_SUPPORT [=n]
   Selected by [y]:
   - GKI_HIDDEN_USB_CONFIGS [=y]
   WARNING: unmet direct dependencies detected for CAN_RX_OFFLOAD
   Depends on [n]: NETDEVICES [=n] && CAN_DEV [=n] && CAN_NETLINK [=n]
   Selected by [y]:
   - GKI_HIDDEN_MCP251XFD_CONFIGS [=y]
   WARNING: unmet direct dependencies detected for WEXT_SPY
   Depends on [n]: NET [=n] && WIRELESS [=n]
   Selected by [y]:
   - GKI_LEGACY_WEXT_ALLCONFIG [=y]
   WARNING: unmet direct dependencies detected for SND_JACK_INPUT_DEV
   Depends on [n]: SOUND [=n] && SND [=n] && SND_JACK [=y]
   Selected by [y]:
   - GKI_HIDDEN_SND_CONFIGS [=y]
   WARNING: unmet direct dependencies detected for NET_DEVLINK
   Depends on [n]: NET [=n]
   Selected by [y]:
   - GKI_HIDDEN_NET_CONFIGS [=y]
   WARNING: unmet direct dependencies detected for WEXT_PROC
   Depends on [n]: NET [=n] && WIRELESS [=n] && PROC_FS [=n] && WEXT_CORE [=y]
   Selected by [y]:
   - GKI_LEGACY_WEXT_ALLCONFIG [=y]
   WARNING: unmet direct dependencies detected for DIMLIB
   Depends on [n]: NET [=n]
   Selected by [y]:
   - GKI_HIDDEN_VIRTUAL_CONFIGS [=y]
   WARNING: unmet direct dependencies detected for SND_PCM_ELD
   Depends on [n]: SOUND [=n] && SND [=n]
   Selected by [y]:
   - GKI_HIDDEN_SND_CONFIGS [=y]
   WARNING: unmet direct dependencies detected for PAGE_POOL
   Depends on [n]: NET [=n]
   Selected by [y]:
   - GKI_HIDDEN_NET_CONFIGS [=y]
   WARNING: unmet direct dependencies detected for WEXT_PRIV
   Depends on [n]: NET [=n] && WIRELESS [=n]
   Selected by [y]:
   - GKI_LEGACY_WEXT_ALLCONFIG [=y]
   WARNING: unmet direct dependencies detected for NET_PTP_CLASSIFY
   Depends on [n]: NET [=n]
   Selected by [y]:
   - GKI_HIDDEN_NET_CONFIGS [=y]
   WARNING: unmet direct dependencies detected for PHYLINK
   Depends on [n]: NETDEVICES [=n]
   Selected by [y]:
   - GKI_HIDDEN_ETHERNET_CONFIGS [=y]
   WARNING: unmet direct dependencies detected for INTEL_MEI_ME
   Depends on [n]: X86 && PCI [=y]
   Selected by [y]:
   - INTEL_MEI_HDCP [=y] && (DRM_I915 [=n] || DRM_XE [=y])
   WARNING: unmet direct dependencies detected for SND_PCM_IEC958
   Depends on [n]: SOUND [=n] && SND [=n]
   Selected by [y]:
   - GKI_HIDDEN_SND_SOC_CONFIGS [=y]
   WARNING: unmet direct dependencies detected for WIRELESS_EXT
   Depends on [n]: NET [=n] && WIRELESS [=n]
   Selected by [y]:
   - GKI_LEGACY_WEXT_ALLCONFIG [=y]
   WARNING: unmet direct dependencies detected for WEXT_CORE
   Depends on [n]: NET [=n] && WIRELESS [=n] && (CFG80211_WEXT [=n] || WIRELESS_EXT [=y])
   Selected by [y]:
   - GKI_LEGACY_WEXT_ALLCONFIG [=y]
   WARNING: unmet direct dependencies detected for SND_COMPRESS_ACCEL
   Depends on [n]: SOUND [=n] && SND [=n]
   Selected by [y]:
   - GKI_HIDDEN_SND_CONFIGS [=y]
   WARNING: unmet direct dependencies detected for SND_JACK
   Depends on [n]: SOUND [=n] && SND [=n]
   Selected by [y]:
   - GKI_HIDDEN_SND_CONFIGS [=y]
   WARNING: unmet direct dependencies detected for SND_VMASTER
   Depends on [n]: SOUND [=n] && SND [=n]
   Selected by [y]:
   - GKI_HIDDEN_SND_CONFIGS [=y]


vim +9 include/uapi/linux/bits.h

3c7a8e190bc5808 Paolo Bonzini 2023-12-12   6  
3c7a8e190bc5808 Paolo Bonzini 2023-12-12   7  #define __GENMASK(h, l) \
3c7a8e190bc5808 Paolo Bonzini 2023-12-12   8          (((~_UL(0)) - (_UL(1) << (l)) + 1) & \
3c7a8e190bc5808 Paolo Bonzini 2023-12-12  @9           (~_UL(0) >> (__BITS_PER_LONG - 1 - (h))))
3c7a8e190bc5808 Paolo Bonzini 2023-12-12  10  

:::::: The code at line 9 was first introduced by commit
:::::: 3c7a8e190bc580813ddd9259f62971c8d2a6b5ad uapi: introduce uapi-friendly macros for GENMASK

:::::: TO: Paolo Bonzini <[email protected]>
:::::: CC: Paolo Bonzini <[email protected]>

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