n_hdlc: simplify freeing of buffer list

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n_hdlc_release contains four loops to free each buffer list. Create a
helper (n_hdlc_free_buf_list) and call it for every list instead. It
makes n_hdlc_release more readable.

We are switching from "for (;;)" to "do {} while (buf)" which avoids the
"if (buf)" completely -- kfree is a nop for NULL pointers.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20200219084118.26491-7-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Jiri Slaby 2020-02-19 09:41:01 +01:00 • committed by Greg Kroah-Hartman

parent c549725ff8

commit 30fafd92c2

1 changed files with 14 additions and 31 deletions

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drivers/tty/n_hdlc.c

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