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linux/drivers/pci/endpoint
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Zhongqiu Han 0e6d92e3b9 PCI: endpoint: epf-mhi: Avoid NULL dereference if DT lacks 'mmio' 
[ Upstream commit 5089b3d874 ]

If platform_get_resource_byname() fails and returns NULL because DT lacks
an 'mmio' property for the MHI endpoint, dereferencing res->start will
cause a NULL pointer access. Add a check to prevent it.

Fixes: 1bf5f25324 ("PCI: endpoint: Add PCI Endpoint function driver for MHI bus")
Link: https://lore.kernel.org/r/20241105120735.1240728-1-quic_zhonhan@quicinc.com
Signed-off-by: Zhongqiu Han <quic_zhonhan@quicinc.com>
[kwilczynski: error message update per the review feedback]
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
[bhelgaas: commit log]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2024-12-05 14:02:26 +01:00
..
functions PCI: endpoint: epf-mhi: Avoid NULL dereference if DT lacks 'mmio' 2024-12-05 14:02:26 +01:00
Kconfig PCI: consolidate PCI config entry in drivers/pci 2018-11-23 11:45:34 +09:00
Makefile PCI: Add SPDX GPL-2.0 when no license was specified 2018-01-26 11:45:16 -06:00
pci-ep-cfs.c PCI: endpoint: Remove unused field in struct pci_epf_group 2024-05-28 11:13:48 -05:00
pci-epc-core.c PCI: Pass domain number to pci_bus_release_domain_nr() explicitly 2024-09-13 22:12:29 +00:00
pci-epc-mem.c PCI: endpoint: Add kernel-doc for pci_epc_mem_init() API 2023-08-26 16:54:46 +00:00
pci-epf-core.c driver core: have match() callback in struct bus_type take a const * 2024-07-03 15:16:54 +02:00