[FS#1242] SATA broken on kernel 4.9 on mt7621

[LEDE Bugs]

The following task has a new comment added:

FS#1242 - SATA broken on kernel 4.9 on mt7621
User who did this - neheb (neheb)

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@HeadLessHUN a little birdie told me that disabling CONFIG_HIGHMEM fixes this. Could be good to try out.

diff --git a/target/linux/ramips/mt7621/config-4.9 b/target/linux/ramips/mt7621/config-4.9
index f9765ed..7732443 100644
--- a/target/linux/ramips/mt7621/config-4.9
+++ b/target/linux/ramips/mt7621/config-4.9
@@ -118,7 +118,7 @@ CONFIG_HAVE_PERF_EVENTS=y
 CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
 CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
 CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
-CONFIG_HIGHMEM=y
+# CONFIG_HIGHMEM is not set
 CONFIG_HW_HAS_PCI=y
 CONFIG_HZ_PERIODIC=y
 CONFIG_I2C=y
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=1242#comment4212