linux-stable/drivers/soc
Sean Anderson 2b3fede822 soc: fsl: qbman: Use raw spinlock for cgr_lock
[ Upstream commit fbec4e7fed ]

smp_call_function always runs its callback in hard IRQ context, even on
PREEMPT_RT, where spinlocks can sleep. So we need to use a raw spinlock
for cgr_lock to ensure we aren't waiting on a sleeping task.

Although this bug has existed for a while, it was not apparent until
commit ef2a8d5478 ("net: dpaa: Adjust queue depth on rate change")
which invokes smp_call_function_single via qman_update_cgr_safe every
time a link goes up or down.

Fixes: 96f413f476 ("soc/fsl/qbman: fix issue in qman_delete_cgr_safe()")
CC: stable@vger.kernel.org
Reported-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Closes: https://lore.kernel.org/all/20230323153935.nofnjucqjqnz34ej@skbuf/
Reported-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Closes: https://lore.kernel.org/linux-arm-kernel/87wmsyvclu.fsf@pengutronix.de/
Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
Reviewed-by: Camelia Groza <camelia.groza@nxp.com>
Tested-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-04-13 12:50:07 +02:00
..
actions
amlogic meson-mx-socinfo: Fix refcount leak in meson_mx_socinfo_init 2022-08-25 11:15:00 +02:00
atmel drivers: soc: atmel: add null entry at the end of at91_soc_allowed_list[] 2021-02-03 23:23:24 +01:00
bcm soc: brcmstb: pm-arm: Fix refcount leak and __iomem leak bugs 2022-09-15 12:17:05 +02:00
dove
fsl soc: fsl: qbman: Use raw spinlock for cgr_lock 2024-04-13 12:50:07 +02:00
gemini
imx
lantiq
mediatek Revert "ASoC: mediatek: Check for error clk pointer" 2022-02-08 18:23:15 +01:00
qcom soc: qcom: qmi_encdec: Restrict string length in decode 2023-09-23 10:48:12 +02:00
renesas pmdomain: renesas: r8a77980-sysc: CR7 must be always on 2024-03-01 13:06:10 +01:00
rockchip soc: rockchip: Fix refcount leak in rockchip_grf_init 2022-06-14 16:59:32 +02:00
samsung
sunxi soc: sunxi: sram: Fix debugfs info for A64 SRAM C 2022-10-05 10:36:45 +02:00
tegra soc/tegra: fuse: Fix bitwise vs. logical OR warning 2021-12-22 09:19:01 +01:00
ti drivers: soc: ti: knav_qmss_queue: Mark knav_acc_firmwares as static 2023-01-18 11:30:02 +01:00
ux500 ARM: ux500: do not directly dereference __iomem 2023-01-18 11:30:41 +01:00
versatile
xilinx
zte
Kconfig
Makefile