From 27600805e62f800bacf990354632eae4e487d34c Mon Sep 17 00:00:00 2001 From: Yazen Ghannam Date: Thu, 3 Sep 2026 10:43:25 -0500 Subject: x86/amd_node: Fix PCI device reference counting in amd_smn_init() 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 Assisted-by: LLM Signed-off-by: Yazen Ghannam Signed-off-by: Borislav Petkov (AMD) Reviewed-by: Mario Limonciello (AMD) Cc: Link: https://patch.msgid.link/20260903154325.74343-1-yazen.ghannam@amd.com --- include/sound/aci.h | 92 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 92 insertions(+) create mode 100644 include/sound/aci.h (limited to 'include/sound/aci.h') diff --git a/include/sound/aci.h b/include/sound/aci.h new file mode 100644 index 000000000..36a761c98 --- /dev/null +++ b/include/sound/aci.h @@ -0,0 +1,92 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ACI_H_ +#define _ACI_H_ + +#define ACI_REG_COMMAND 0 /* write register offset */ +#define ACI_REG_STATUS 1 /* read register offset */ +#define ACI_REG_BUSY 2 /* busy register offset */ +#define ACI_REG_RDS 2 /* PCM20: RDS register offset */ +#define ACI_MINTIME 500 /* ACI time out limit */ + +#define ACI_SET_MUTE 0x0d +#define ACI_SET_POWERAMP 0x0f +#define ACI_SET_TUNERMUTE 0xa3 +#define ACI_SET_TUNERMONO 0xa4 +#define ACI_SET_IDE 0xd0 +#define ACI_SET_WSS 0xd1 +#define ACI_SET_SOLOMODE 0xd2 +#define ACI_SET_PREAMP 0x03 +#define ACI_GET_PREAMP 0x21 +#define ACI_WRITE_TUNE 0xa7 +#define ACI_READ_TUNERSTEREO 0xa8 +#define ACI_READ_TUNERSTATION 0xa9 +#define ACI_READ_VERSION 0xf1 +#define ACI_READ_IDCODE 0xf2 +#define ACI_INIT 0xff +#define ACI_STATUS 0xf0 +#define ACI_S_GENERAL 0x00 +#define ACI_ERROR_OP 0xdf + +/* ACI Mixer */ + +/* These are the values for the right channel GET registers. + Add an offset of 0x01 for the left channel register. + (left=right+0x01) */ + +#define ACI_GET_MASTER 0x03 +#define ACI_GET_MIC 0x05 +#define ACI_GET_LINE 0x07 +#define ACI_GET_CD 0x09 +#define ACI_GET_SYNTH 0x0b +#define ACI_GET_PCM 0x0d +#define ACI_GET_LINE1 0x10 /* Radio on PCM20 */ +#define ACI_GET_LINE2 0x12 + +#define ACI_GET_EQ1 0x22 /* from Bass ... */ +#define ACI_GET_EQ2 0x24 +#define ACI_GET_EQ3 0x26 +#define ACI_GET_EQ4 0x28 +#define ACI_GET_EQ5 0x2a +#define ACI_GET_EQ6 0x2c +#define ACI_GET_EQ7 0x2e /* ... to Treble */ + +/* And these are the values for the right channel SET registers. + For left channel access you have to add an offset of 0x08. + MASTER is an exception, which needs an offset of 0x01 */ + +#define ACI_SET_MASTER 0x00 +#define ACI_SET_MIC 0x30 +#define ACI_SET_LINE 0x31 +#define ACI_SET_CD 0x34 +#define ACI_SET_SYNTH 0x33 +#define ACI_SET_PCM 0x32 +#define ACI_SET_LINE1 0x35 /* Radio on PCM20 */ +#define ACI_SET_LINE2 0x36 + +#define ACI_SET_EQ1 0x40 /* from Bass ... */ +#define ACI_SET_EQ2 0x41 +#define ACI_SET_EQ3 0x42 +#define ACI_SET_EQ4 0x43 +#define ACI_SET_EQ5 0x44 +#define ACI_SET_EQ6 0x45 +#define ACI_SET_EQ7 0x46 /* ... to Treble */ + +struct snd_miro_aci { + struct snd_card *card; + unsigned long aci_port; + int aci_vendor; + int aci_product; + int aci_version; + int aci_amp; + int aci_preamp; + int aci_solomode; + + struct mutex aci_mutex; +}; + +int snd_aci_cmd(struct snd_miro_aci *aci, int write1, int write2, int write3); + +struct snd_miro_aci *snd_aci_get_aci(void); + +#endif /* _ACI_H_ */ + -- cgit v1.3.1