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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 /include/media/rppx1.h | |
| 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 'include/media/rppx1.h')
| -rw-r--r-- | include/media/rppx1.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/include/media/rppx1.h b/include/media/rppx1.h new file mode 100644 index 000000000..2e761046d --- /dev/null +++ b/include/media/rppx1.h @@ -0,0 +1,36 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2026 Renesas Electronics Corp. + * Copyright (C) 2026 Ideas on Board Oy + * Copyright (C) 2026 Ragnatech AB + */ + +#ifndef __MEDIA_DCT_RPPX1_H__ +#define __MEDIA_DCT_RPPX1_H__ + +#include <linux/v4l2-mediabus.h> +#include <linux/media/dreamchip/rppx1-config.h> + +#include <media/videobuf2-core.h> + +struct rppx1; + +struct rppx1 *rppx1_create(void __iomem *base, struct device *dev); + +void rppx1_destroy(struct rppx1 *rpp); + +int rppx1_start(struct rppx1 *rpp, const struct v4l2_mbus_framefmt *input, + const struct v4l2_mbus_framefmt *hv, + const struct v4l2_mbus_framefmt *mv); + +int rppx1_stop(struct rppx1 *rpp); + +bool rppx1_interrupt(struct rppx1 *rpp, u32 *isc); + +typedef int (*rppx1_reg_write)(void *priv, u32 offset, u32 value); +int rppx1_params(struct rppx1 *rpp, struct vb2_buffer *vb, size_t max_size, + rppx1_reg_write write, void *priv); + +void rppx1_stats_fill_isr(struct rppx1 *rpp, u32 isc, void *buf); + +#endif /* __MEDIA_DCT_RPPX1_H__ */ |