imx_mu_isr() always calls pm_system_wakeup() even when it should not,
making the system unable to enter sleep.
Suspend fails as follows:
armadillo:~# echo mem > /sys/power/state
[ 2614.602432] PM: suspend entry (deep)
[ 2614.610640] Filesystems sync: 0.004 seconds
[ 2614.618016] Freezing user space processes ... (elapsed 0.001 seconds) done.
[ 2614.626555] OOM killer disabled.
[ 2614.629792] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.
[ 2614.638456] printk: Suspending console(s) (use no_console_suspend to debug)
[ 2614.649504] PM: Some devices failed to suspend, or early wake event detected
[ 2614.730103] PM: resume devices took 0.080 seconds
[ 2614.741924] OOM killer enabled.
[ 2614.745073] Restarting tasks ... done.
[ 2614.754532] PM: suspend exit
ash: write error: Resource busy
armadillo:~#
Upstream commit 892cb524ae8a is correct, so this seems to be a
mistake during cherry-pick.
Cc: <stable@vger.kernel.org>
Fixes:
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.. | ||
arm_mhu_db.c | ||
arm_mhu.c | ||
armada-37xx-rwtm-mailbox.c | ||
bcm2835-mailbox.c | ||
bcm-flexrm-mailbox.c | ||
bcm-pdc-mailbox.c | ||
hi3660-mailbox.c | ||
hi6220-mailbox.c | ||
imx-mailbox.c | ||
Kconfig | ||
mailbox-altera.c | ||
mailbox-sti.c | ||
mailbox-test.c | ||
mailbox-xgene-slimpro.c | ||
mailbox.c | ||
mailbox.h | ||
Makefile | ||
mtk-cmdq-mailbox.c | ||
omap-mailbox.c | ||
pcc.c | ||
pl320-ipc.c | ||
platform_mhu.c | ||
qcom-apcs-ipc-mailbox.c | ||
qcom-ipcc.c | ||
rockchip-mailbox.c | ||
sprd-mailbox.c | ||
stm32-ipcc.c | ||
sun6i-msgbox.c | ||
tegra-hsp.c | ||
ti-msgmgr.c | ||
zynqmp-ipi-mailbox.c |