[PATCH] ramips/mt7621: drop two obsolete patches

[Rui Salvaterra]

On Tue, 16 Mar 2021 at 09:02, Rui Salvaterra <rsalvaterra at gmail.com> wrote:
>
> Although the title is trivial, the potential impact of these changes is enough
> in itself to warrant more extensive justification, which follows:
>
> 202-weak_reordering.patch - In order to fix random hangs on MT7621, we've been
> selecting WEAK_REORDERING_BEYOND_LLSC for years [1]. However, these random hangs
> have been most likely caused by an oversight in the MIPS implementation of the
> kernel memory consistency model, which has already been fixed for some time (and
> stable-backported) [2].
>
> 321-mt7621-timer.patch - We've also been carrying this patch for many years [3],
> in order to fix a timer calibration issue on MT7621. Turns out, after retesting
> with a recent kernel (5.10), the system works perfectly fine without it (no
> rcu_sched stalls or inconsistent BogoMIPS values across CPUs).
>
> The GENERIC_CLOCKEVENTS_BROADCAST selection, however, is an unrelated change,
> should be kept (although we're not building with cpuidle support), and is thus
> moved to a new patch, 202-generic-clockevents-broadcast.patch. This change also
> requires a manual refresh of both 322-mt7621-fix-cpu-clk-add-clkdev.patch and
> 323-mt7621-memory-detect.patch.
>
> [1] https://git.openwrt.org/?p=openwrt/openwrt.git;a=commitdiff;h=5c971cd6fdd7298a2017bdb6bea870088eddb8b9
> [2] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/arch/mips?h=linux-5.4.y&id=42344113ba7a1ed7b5654cd5270af0d5698d8521
> [3] https://git.openwrt.org/?p=openwrt/openwrt.git;a=commitdiff;h=6f4a903533361a2906a4d94ac6f597cd9c6c47bc
>
> Suggested-by: Ilya Lipnitskiy <ilya.lipnitskiy at gmail.com>
> Tested-by: Donald Hoskins <grommish at gmail.com>
> Signed-off-by: Rui Salvaterra <rsalvaterra at gmail.com>

[patch snipped]

Ping. Any comments on this? I'm thinking of splitting it in two
patches to make reviewing easier, adding the cpuidle patch as the last
one and resend as a series of three. Thoughts?

Thanks in advance,
Rui