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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/crypto/nx/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/crypto/nx/Kconfig')
| -rw-r--r-- | drivers/crypto/nx/Kconfig | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/drivers/crypto/nx/Kconfig b/drivers/crypto/nx/Kconfig new file mode 100644 index 000000000..2a35e0e78 --- /dev/null +++ b/drivers/crypto/nx/Kconfig @@ -0,0 +1,51 @@ +# SPDX-License-Identifier: GPL-2.0-only + +config CRYPTO_DEV_NX_ENCRYPT + tristate "Encryption acceleration support on pSeries platform" + depends on PPC_PSERIES && IBMVIO && !CPU_LITTLE_ENDIAN + default y + select CRYPTO_AES + select CRYPTO_CCM + help + Support for PowerPC Nest (NX) encryption acceleration. This + module supports acceleration for AES and SHA2 algorithms on + the pSeries platform. If you choose 'M' here, this module + will be called nx_crypto. + +config CRYPTO_DEV_NX_COMPRESS + tristate "Compression acceleration support" + default y + select CRYPTO_ALGAPI + select 842_DECOMPRESS + help + Support for PowerPC Nest (NX) compression acceleration. This + module supports acceleration for compressing memory with the 842 + algorithm using the cryptographic API. One of the platform + drivers must be selected also. If you choose 'M' here, this + module will be called nx_compress. + +if CRYPTO_DEV_NX_COMPRESS + +config CRYPTO_DEV_NX_COMPRESS_PSERIES + tristate "Compression acceleration support on pSeries platform" + depends on PPC_PSERIES && IBMVIO + depends on PPC_VAS + default y + help + Support for PowerPC Nest (NX) compression acceleration. This + module supports acceleration for compressing memory with the 842 + algorithm. This supports NX hardware on the pSeries platform. + If you choose 'M' here, this module will be called nx_compress_pseries. + +config CRYPTO_DEV_NX_COMPRESS_POWERNV + tristate "Compression acceleration support on PowerNV platform" + depends on PPC_POWERNV + depends on PPC_VAS + default y + help + Support for PowerPC Nest (NX) compression acceleration. This + module supports acceleration for compressing memory with the 842 + algorithm. This supports NX hardware on the PowerNV platform. + If you choose 'M' here, this module will be called nx_compress_powernv. + +endif |