Evan Green 3bcf02208e soc: qcom: smp2p: Safely acquire spinlock without IRQs ... commit fc3e62e25c3896855b7c3d72df19ca6be3459c9f upstream. smp2p_update_bits() should disable interrupts when it acquires its spinlock. This is important because without the _irqsave, a priority inversion can occur. This function is called both with interrupts enabled in qcom_q6v5_request_stop(), and with interrupts disabled in ipa_smp2p_panic_notifier(). IRQ handling of spinlocks should be consistent to avoid the panic notifier deadlocking because it's sitting on the thread that's already got the lock via _request_stop(). Found via lockdep. Cc: stable@vger.kernel.org Fixes: 50e9964141 ("soc: qcom: smp2p: Qualcomm Shared Memory Point to Point") Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Reviewed-by: Stephen Boyd <swboyd@chromium.org> Signed-off-by: Evan Green <evgreen@chromium.org> Link: https://lore.kernel.org/r/20200929133040.RESEND.1.Ideabf6dcdfc577cf39ce3d95b0e4aa1ac8b38f0c@changeid Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-12-30 11:54:22 +01:00
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actions
amlogic	soc: amlogic: canvas: add missing put_device() call in meson_canvas_get()	2020-12-30 11:53:27 +01:00
aspeed
atmel
bcm
dove
fsl	soc: fsl: dpio: Get the cpumask through cpumask_of(cpu)	2020-11-23 19:27:45 -06:00
gemini
imx
ixp4xx
kendryte
lantiq
mediatek	soc: mediatek: Check if power domains can be powered on at boot time	2020-12-30 11:52:56 +01:00
qcom	soc: qcom: smp2p: Safely acquire spinlock without IRQs	2020-12-30 11:54:22 +01:00
renesas	soc: renesas: rmobile-sysc: Fix some leaks in rmobile_init_pm_domains()	2020-12-30 11:52:56 +01:00
rockchip	soc: rockchip: io-domain: Fix error return code in rockchip_iodomain_probe()	2020-12-30 11:53:34 +01:00
samsung	ARM: SoC platform updates	2020-10-24 10:33:08 -07:00
sifive
sunxi
tegra	soc/tegra: fuse: Fix index bug in get_process_id	2020-12-26 16:02:38 +01:00
ti	drivers: soc: ti: knav_qmss_queue: Fix error return code in knav_queue_probe	2020-12-30 11:53:18 +01:00
ux500
versatile
xilinx
zte
Kconfig
Makefile