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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: mfHdQNnPeZxmrjCdKQLlax11z2gi9DUPy2AZMBjrD4AGiNyz/WhuUs7NptAqhWcWssvHsy7+/Nod3XzQfnBUp8jH51xitarBtr+oehMxW8oNXFWs9WTBRzwJa65ZV7KBtiT1qRkzydbYDaXnqYFBtqH2Dg8voXaCB0vrFLv+Awy7pR2NIGas87CZ5Mx+RVKyARIRtyzUrijZseoSPD6zzbOIxrvWO0ZbaETtYbMbnxirrHOLezoqA+oIWS1vv0twOmvHB8uO/gJeeKL0t444FTmRwz0ZqxS8O+7j7PiVoRbdApBjK/tEcNCmPEPQhWYUoRh9IfIEIm8lCb0ninzsTm8pYH9CUlfYmDH2RNq6GJyEQ9QTzpr4xNecB8V5hQSgwlKEVQmeYMQH4An23uR32WVdTK7wBMdnfaMsELGknSBSNnMASWWtEOlyh/7EVAVG X-OriginatorOrg: opensource.cirrus.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Feb 2026 10:14:32.4797 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: a5638632-68af-473e-46bb-08de6ed682a1 X-MS-Exchange-CrossTenant-Id: bec09025-e5bc-40d1-a355-8e955c307de8 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=bec09025-e5bc-40d1-a355-8e955c307de8;Ip=[84.19.233.75];Helo=[edirelay1.ad.cirrus.com] X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: TreatMessagesAsInternal-BL6PEPF0001AB52.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA6PR19MB8673 X-Authority-Analysis: v=2.4 cv=G+QR0tk5 c=1 sm=1 tr=0 ts=6995910d cx=c_pps a=hMPBqNrkZiCD5Zgemr5n7Q==:117 a=h1hSm8JtM9GN1ddwPAif2w==:17 a=6eWqkTHjU83fiwn7nKZWdM+Sl24=:19 a=z/mQ4Ysz8XfWz/Q5cLBRGdckG28=:19 a=IkcTkHD0fZMA:10 a=HzLeVaNsDn8A:10 a=s63m1ICgrNkA:10 a=RWc_ulEos4gA:10 a=VkNPw1HP01LnGYTKEx00:22 a=Mpw57Om8IfrbqaoTuvik:22 a=GgsMoib0sEa3-_RKJdDe:22 a=hyfEzSwnMbY3Cd_HcmsA:9 a=QEXdDO2ut3YA:10 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMjE4MDA5MCBTYWx0ZWRfX7REzPstRXiiY evQr8ly6CWuaXSEJfmGz9CsEtH6IV/FMHU4UV68vPgTfchkTBB81MhH/qrjlKY6jWL8izHDAjt2 F+muc2k4c/CzbfQjlOszKwuNoYsXQ55nT+LYLyU2DRouIWiwgVyPlsuoVA2gdKyrSUBovTrffDg aOL7vTu4Oskr+6DPJWVGLFXXrKONxXvJYIJstE49nSybItJOLPzX61X0s9x2JGRHjf5gjtoKof6 hTJMuuLou2H2MpNMGB0AF9WSx6p9u/QJ3SUmb2L14+o+DN4n2HQ0qwyDUb3aeT3KR/t38pwpOpO u4dfdZ78kzl44xPHhBEU8HSKcD0oic+9HhLznAZ5e47E46x3OBriRIJeN4PV8yDfhP2FQeZAkEY f/vzYcznxojJvI9hq4sgfydm8IXkzmCNp+xNT7JCtgfxN6G9tcplRbMvMLlaUmhMWojBvWZcwnl u2HIoRMDfHmw7IDFvuQ== X-Proofpoint-GUID: DS6VqFGrz-OFI2cJtXogwlGMjxYx6UHD X-Proofpoint-ORIG-GUID: DS6VqFGrz-OFI2cJtXogwlGMjxYx6UHD X-Proofpoint-Spam-Reason: safe On 17/2/26 23:35, Cole Leavitt wrote: > On systems with CS35L56 SoundWire codecs (e.g. Lenovo ThinkPad P16 > Gen3), every boot produces misleading dev_warn() messages: > > cs35l56 sdw:0:2:01fa:3556:01:0: Slave 2 state check1: UNATTACHED, status was 1 > cs35l56 sdw:0:2:01fa:3556:01:1: Slave 1 state check1: UNATTACHED, status was 1 > Is this really a problem? They are warns, not errors. Nothing in that message says that this is an error, or that it's unexpected. The message is accurate. > These fire when the CS35L56 driver triggers a system reset after > firmware download, which physically detaches the codec from the bus. > This is expected and handled gracefully -- the driver waits for > re-enumeration and the codec recovers within milliseconds. > > The warnings were added in commit d1b328557058 ("soundwire: bus: add > dev_warn() messages to track UNATTACHED devices") to debug genuine > attachment failures. They remain valuable for unexpected detachments, > but firing on every boot for normal codec operation degrades their > diagnostic value. > > This series adds a simple boolean flag (unattach_pending) to struct > sdw_slave that codec drivers can set before triggering an expected > detach. When set, the bus layer emits dev_dbg() instead of dev_warn() > and auto-clears the flag. > > Note: There is also a separate set of UNATTACHED warnings during > initial multi-device enumeration, caused by the known PING frame race > documented in cadence_master.c. That is a different problem with > different constraints and is not addressed here. > > Cole Leavitt (2): > soundwire: bus: downgrade expected unattach warnings to dev_dbg > ASoC: cs35l56: set unattach_pending before SoundWire system reset > > drivers/soundwire/bus.c | 9 +++++++-- > include/linux/soundwire/sdw.h | 1 + > sound/soc/codecs/cs35l56.c | 4 ++++ > 3 files changed, 12 insertions(+), 2 deletions(-) >