Daniel Baluta e0c0412f47 mailbox: imx: Fix Tx doorbell shutdown path ... [ Upstream commit bf159d151a ] Tx doorbell is handled by txdb_tasklet and doesn't have an associated IRQ. Anyhow, imx_mu_shutdown ignores this and tries to free an IRQ that wasn't requested for Tx DB resulting in the following warning: [ 1.967644] Trying to free already-free IRQ 26 [ 1.972108] WARNING: CPU: 2 PID: 157 at kernel/irq/manage.c:1708 __free_irq+0xc0/0x358 [ 1.980024] Modules linked in: [ 1.983088] CPU: 2 PID: 157 Comm: kworker/2:1 Tainted: G [ 1.993524] Hardware name: Freescale i.MX8QXP MEK (DT) [ 1.998668] Workqueue: events deferred_probe_work_func [ 2.003812] pstate: 60000085 (nZCv daIf -PAN -UAO) [ 2.008607] pc : __free_irq+0xc0/0x358 [ 2.012364] lr : __free_irq+0xc0/0x358 [ 2.016111] sp : ffff00001179b7e0 [ 2.019422] x29: ffff00001179b7e0 x28: 0000000000000018 [ 2.024736] x27: ffff000011233000 x26: 0000000000000004 [ 2.030053] x25: 000000000000001a x24: ffff80083bec74d4 [ 2.035369] x23: 0000000000000000 x22: ffff80083bec7588 [ 2.040686] x21: ffff80083b1fe8d8 x20: ffff80083bec7400 [ 2.046003] x19: 0000000000000000 x18: ffffffffffffffff [ 2.051320] x17: 0000000000000000 x16: 0000000000000000 [ 2.056637] x15: ffff0000111296c8 x14: ffff00009179b517 [ 2.061953] x13: ffff00001179b525 x12: ffff000011142000 [ 2.067270] x11: ffff000011129f20 x10: ffff0000105da970 [ 2.072587] x9 : 00000000ffffffd0 x8 : 0000000000000194 [ 2.077903] x7 : 612065657266206f x6 : ffff0000111e7b09 [ 2.083220] x5 : 0000000000000003 x4 : 0000000000000000 [ 2.088537] x3 : 0000000000000000 x2 : 00000000ffffffff [ 2.093854] x1 : 28b70f0a2b60a500 x0 : 0000000000000000 [ 2.099173] Call trace: [ 2.101618] __free_irq+0xc0/0x358 [ 2.105021] free_irq+0x38/0x98 [ 2.108170] imx_mu_shutdown+0x90/0xb0 [ 2.111921] mbox_free_channel.part.2+0x24/0xb8 [ 2.116453] mbox_free_channel+0x18/0x28 This bug is present from the beginning of times. Cc: Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com> Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com> Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2020-01-04 19:13:17 +01:00
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arm_mhu.c
bcm-flexrm-mailbox.c	mailbox: bcm-flexrm-mailbox: Fix FlexRM ring flush timeout issue	2019-03-23 20:09:49 +01:00
bcm-pdc-mailbox.c
bcm2835-mailbox.c	mailbox: bcm2835: Fix of_xlate return value	2018-06-06 22:21:59 +05:30
hi3660-mailbox.c	mailbox: Add support for Hi3660 mailbox	2018-03-20 11:15:54 +08:00
hi6220-mailbox.c	treewide: devm_kzalloc() -> devm_kcalloc()	2018-06-12 16:19:22 -07:00
imx-mailbox.c	mailbox: imx: Fix Tx doorbell shutdown path	2020-01-04 19:13:17 +01:00
Kconfig	mailbox: Add support for i.MX messaging unit	2018-08-15 09:53:07 +05:30
mailbox-altera.c
mailbox-sti.c	treewide: devm_kzalloc() -> devm_kcalloc()	2018-06-12 16:19:22 -07:00
mailbox-test.c	mailbox: mailbox-test: fix null pointer if no mmio	2019-12-05 09:21:35 +01:00
mailbox-xgene-slimpro.c	mailbox: xgene-slimpro: Fix potential NULL pointer dereference	2018-08-03 18:56:08 +05:30
mailbox.c	mailbox: handle failed named mailbox channel request	2019-07-31 07:27:07 +02:00
mailbox.h
Makefile	mailbox: Add support for i.MX messaging unit	2018-08-15 09:53:07 +05:30
mtk-cmdq-mailbox.c	mailbox: add MODULE_LICENSE() for mtk-cmdq-mailbox.c	2018-08-15 09:43:37 +05:30
omap-mailbox.c	mailbox/omap: use of_device_get_match_data() to get match data	2018-08-03 18:57:15 +05:30
pcc.c	mailbox: PCC: handle parse error	2018-11-13 11:08:18 -08:00
pl320-ipc.c
platform_mhu.c
qcom-apcs-ipc-mailbox.c	mbox: qcom: add APCS child device for QCS404	2019-10-07 18:57:02 +02:00
rockchip-mailbox.c
stm32-ipcc.c	mailbox: stm32_ipcc: add spinlock to fix channels concurrent access	2019-12-05 09:21:34 +01:00
tegra-hsp.c
ti-msgmgr.c	mailbox: ti-msgmgr: Add support for Secure Proxy	2018-08-03 18:57:41 +05:30