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| author | Yazen Ghannam <yazen.ghannam@amd.com> | 2026-09-03 10:43:25 -0500 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2026-09-10 18:05:43 -0700 |
| commit | 27600805e62f800bacf990354632eae4e487d34c (patch) | |
| tree | e8aec0ddfaa0bc264d79af632e3de3f1b75ae4c8 /drivers/mtd/hyperbus/Kconfig | |
| download | linux-stable-27600805e62f800bacf990354632eae4e487d34c.tar.gz linux-stable-27600805e62f800bacf990354632eae4e487d34c.zip | |
x86/amd_node: Fix PCI device reference counting in amd_smn_init()grafted
The local "root" pointer is a temporary variable used during the device
search. Therefore, refcount related to the search iterators should be cleaned
up after the search is complete.
Use the __free() cleanup macro to ensure the refcount is decremented when the
temporary pointer goes out of scope.
Additionally, increment the refcount when caching a root pointer. This ensures
the in-use refcount is separate from the temporary search refcounting.
Finally, drop the redundant "root = NULL" before the second search loop. The
pci_get_class() iterator always decrements the refcount of its "from"
argument, so the first loop can only fall through with "root" already NULL.
Fixes: 0a4b61d9c2e4 ("x86/amd_node: Fix AMD root device caching")
Closes: https://sashiko.dev/#/patchset/20260806160159.230453-1-jason.andryuk%40amd.com
Reported-by: Sashiko <sashiko-bot@kernel.org>
Assisted-by: LLM
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Cc: <stable@kernel.org>
Link: https://patch.msgid.link/20260903154325.74343-1-yazen.ghannam@amd.com
Diffstat (limited to 'drivers/mtd/hyperbus/Kconfig')
| -rw-r--r-- | drivers/mtd/hyperbus/Kconfig | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/mtd/hyperbus/Kconfig b/drivers/mtd/hyperbus/Kconfig new file mode 100644 index 000000000..30ffc4c16 --- /dev/null +++ b/drivers/mtd/hyperbus/Kconfig @@ -0,0 +1,32 @@ +menuconfig MTD_HYPERBUS + tristate "HyperBus support" + depends on HAS_IOMEM + select MTD_CFI + select MTD_MAP_BANK_WIDTH_2 + select MTD_CFI_AMDSTD + select MTD_COMPLEX_MAPPINGS + help + This is the framework for the HyperBus which can be used by + the HyperBus Controller driver to communicate with + HyperFlash. See Cypress HyperBus specification for more + details + +if MTD_HYPERBUS + +config HBMC_AM654 + tristate "HyperBus controller driver for AM65x SoC" + depends on ARCH_K3 || COMPILE_TEST + select MULTIPLEXER + imply MUX_MMIO + help + This is the driver for HyperBus controller on TI's AM65x and + other SoCs + +config RPCIF_HYPERBUS + tristate "Renesas RPC-IF HyperBus driver" + depends on RENESAS_RPCIF + depends on MTD_CFI_BE_BYTE_SWAP + help + This option includes Renesas RPC-IF HyperBus support. + +endif # MTD_HYPERBUS |