ramips/mt7621: drop the 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
backported to stable) [2].

Manually refreshed:
321-mt7621-timer.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

Suggested-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
Tested-by: Donald Hoskins <grommish@gmail.com>
Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com>

diff --git a/target/linux/ramips/patches-5.10/202-weak_reordering.patch b/target/linux/ramips/patches-5.10/202-weak_reordering.patch
deleted file mode 100644 (file)
index 074e166..0000000
--- a/target/linux/ramips/patches-5.10/202-weak_reordering.patch
+++ /dev/null
@@ -1,10 +0,0 @@
---- a/arch/mips/ralink/Kconfig
-+++ b/arch/mips/ralink/Kconfig
-@@ -57,6 +57,7 @@ choice
-               select CLKSRC_MIPS_GIC
-               select HAVE_PCI if PCI_MT7621
-               select SOC_BUS
-+              select WEAK_REORDERING_BEYOND_LLSC
- endchoice
- 
- choice

diff --git a/target/linux/ramips/patches-5.10/321-mt7621-timer.patch b/target/linux/ramips/patches-5.10/321-mt7621-timer.patch
index 91e14ad63b8a8e5287c0769cfb4c211082ada232..08d5935eb09f4997f70f1f4a66aa67d588ad5be5 100644 (file)
--- a/target/linux/ramips/patches-5.10/321-mt7621-timer.patch
+++ b/target/linux/ramips/patches-5.10/321-mt7621-timer.patch
@@ -77,10 +77,10 @@
        void __iomem *sysc = (void __iomem *) KSEG1ADDR(MT7621_SYSC_BASE);
 --- a/arch/mips/ralink/Kconfig
 +++ b/arch/mips/ralink/Kconfig
-@@ -63,6 +63,7 @@ choice
+@@ -62,6 +62,7 @@ choice
+               select CLKSRC_MIPS_GIC
                select HAVE_PCI if PCI_MT7621
                select SOC_BUS
-               select WEAK_REORDERING_BEYOND_LLSC
 +              select GENERIC_CLOCKEVENTS_BROADCAST
  endchoice