counter: add defaults to switch-statements
Clang static analysis reports this representative problem counter-chrdev.c:482:3: warning: Undefined or garbage value returned to caller return ret; ^~~~~~~~~~ counter_get_data() has a multilevel switches, some without defaults, so ret is sometimes not set. Add returning -EINVAL similar to other defaults. Link: https://lore.kernel.org/r/20220227161746.82776-1-trix@redhat.comReviewed-by: NJonathan Cameron <Jonathan.Cameron@huawei.com> Acked-by: NSyed Nayyar Waris <syednwaris@gmail.com> Signed-off-by: NTom Rix <trix@redhat.com> Signed-off-by: NWilliam Breathitt Gray <vilhelm.gray@gmail.com> Link: https://lore.kernel.org/r/b98d1a3ed4b0b324b261b23defd1bdddddba4d44.1647373009.git.vilhelm.gray@gmail.comSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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