Updating this API is risky because some places rely on the old behavior
and not all of them have been updated.  Here are some additional places
you might want to change.

drivers/usb/host/uhci-q.c:466 link_async() warn: iterator used outside loop: 
'pqh'
drivers/infiniband/core/mad.c:968 ib_get_rmpp_segment() warn: iterator used 
outside loop: 'mad_send_wr->cur_seg'
drivers/opp/debugfs.c:208 opp_migrate_dentry() warn: iterator used outside 
loop: 'new_dev'
drivers/staging/greybus/audio_codec.c:602 gbcodec_mute_stream() warn: iterator 
used outside loop: 'module'
drivers/staging/media/atomisp/pci/atomisp_acc.c:508 
atomisp_acc_load_extensions() warn: iterator used outside loop: 'acc_fw'
drivers/perf/thunderx2_pmu.c:814 tx2_uncore_pmu_init_dev() warn: iterator used 
outside loop: 'rentry'
drivers/gpu/drm/nouveau/nvkm/engine/device/ctrl.c:111 
nvkm_control_mthd_pstate_attr() warn: iterator used outside loop: 'pstate'
drivers/gpu/drm/panfrost/panfrost_mmu.c:203 panfrost_mmu_as_get() warn: 
iterator used outside loop: 'lru_mmu'
drivers/media/usb/uvc/uvc_v4l2.c:885 uvc_ioctl_enum_input() warn: iterator used 
outside loop: 'iterm'
drivers/media/usb/uvc/uvc_v4l2.c:896 uvc_ioctl_enum_input() warn: iterator used 
outside loop: 'iterm'
drivers/scsi/dc395x.c:3596 device_alloc() warn: iterator used outside loop: 'p'
drivers/net/ethernet/mellanox/mlx4/alloc.c:379 __mlx4_alloc_from_zone() warn: 
iterator used outside loop: 'curr_node'
fs/ocfs2/dlm/dlmdebug.c:573 lockres_seq_start() warn: iterator used outside 
loop: 'res'

This patchset fixes 3 bugs.  Initially when it's merged it's probably
going to introduce some bugs because there are likely other places which
rely on the old behavior.

In an ideal world, with the new API the compiler would warn about
uninitialized variables, but unfortunately that warning is disabled by
default so we still have to rely on kbuild/Clang/Smatch to find the
bugs.

But hopefully the new API encourages people to write clearer code so it
prevents bugs in the long run.

regards,
dan carpenter

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