diff options
| author | Jarkko Nikula <jarkko.nikula@linux.intel.com> | 2024-09-20 17:44:31 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-12-14 20:04:04 +0100 |
| commit | 19cc5767334bfe980f52421627d0826c0da86721 (patch) | |
| tree | 5c69875a1bd513d25a83a040299a4d8cb3e8f4ad /drivers/pci/controller/dwc | |
| parent | 7e45af15cf724dfbb755bf4fe5093b96731a7fc1 (diff) | |
i3c: mipi-i3c-hci: Mask ring interrupts before ring stop request
[ Upstream commit 6ca2738174e4ee44edb2ab2d86ce74f015a0cc32 ]
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>
Diffstat (limited to 'drivers/pci/controller/dwc')
0 files changed, 0 insertions, 0 deletions