USB: allow some usb functions to take a const pointer.

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The functions to_usb_interface(), to_usb_device, and
interface_to_usbdev() sometimes would like to take a const * and return
a const * back.  As we are doing pointer math, a call to container_of()
loses the const-ness of a pointer, so use a _Generic() macro to pick the
proper inline function to call instead.

Link: https://lore.kernel.org/r/20221016104155.1260201-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Greg Kroah-Hartman 2022-10-16 12:41:55 +02:00

parent 7ebe49b76a

commit 593efa4091

1 changed files with 52 additions and 3 deletions

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include/linux/usb.h

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