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linux/drivers/i3c/master
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Jarkko Nikula a6cddf68b3 i3c: mipi-i3c-hci: Mask ring interrupts before ring stop request 
[ Upstream commit 6ca2738174 ]

Bus cleanup path in DMA mode may trigger a RING_OP_STAT interrupt when
the ring is being stopped. Depending on timing between ring stop request
completion, interrupt handler removal and code execution this may lead
to a NULL pointer dereference in hci_dma_irq_handler() if it gets to run
after the io_data pointer is set to NULL in hci_dma_cleanup().

Prevent this my masking the ring interrupts before ring stop request.

Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Link: https://lore.kernel.org/r/20240920144432.62370-2-jarkko.nikula@linux.intel.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2024-12-14 19:51:41 +01:00
..
mipi-i3c-hci i3c: mipi-i3c-hci: Mask ring interrupts before ring stop request 2024-12-14 19:51:41 +01:00
dw-i3c-master.c i3c: master: dw: check return of dw_i3c_master_get_free_pos() 2022-03-08 19:12:37 +01:00
i3c-master-cdns.c i3c: master: cdns: Update maximum prescaler value for i2c clock 2024-02-23 08:54:50 +01:00
Kconfig i3c: master: svc: Add Silvaco I3C master driver 2021-02-06 00:43:29 +01:00
Makefile i3c: master: svc: Add Silvaco I3C master driver 2021-02-06 00:43:29 +01:00
svc-i3c-master.c i3c: master: svc: fix invalidate IBI type and miss call client IBI handler 2024-06-16 13:40:00 +02:00