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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: PLWFGv4EGTojeixXe8IYEQ4NxCyOmdYyMjA7E3SyNglZB70v+hY1cEaNj1VmNDlPBY9SbZ8CbOlxhoArkUWE/EPXlBlfoNlStZIFj4743XF1ti++PvzkJtPB2itwoQNteG4WY9KB0nFKwnkZIR4/Yj+N5rm4Ldoi1tkOCl5M4sPYXVaSjz2grnBX0ZJsPBPP2SODq1bUEav1uxDYy3kJJ5/wgJ7YUK2FhGg4s8K5hlj501HhpqY8v6YDgFncErPpsx5XePcmK+T5e+xja52h8tpzHwle/JH2RClcjGEHOyWmg2tzZ+UQpiMFmbraChYCyLww5NpYGnyW6UEYMyVNJ/ydmBTiDK/oeA+VuXHfNcXliqM+3u2egNdcqgUERASiDFoGYZQfoTjaUO4pqJXyPR4eD4Uc9KFdBnYpx+q3ZbKk6ZoBZ6WVXW6vY/WMIIV+ X-OriginatorOrg: opensource.cirrus.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Feb 2026 16:43:13.9189 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 489da1ce-69cc-4484-a884-08de72faa365 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-DS2PEPF000061C1.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS7PR19MB4408 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMjIzMDE0MyBTYWx0ZWRfXzGkquHiacZl+ veJuQBnCujP91mNcwfbOCG9QPawiX3yEcmoLJoeOlcs2s1kiQTfGbkfbLJ7mIdSWTGiWRVQsqor dnO4aDGKnzk/r9e0NJgSo7677QLfKZm4gX58HSgy2Tgs9Dv+5+sUJs1jQDlCHkFqywCYgPeH6ty ENtuTKUy7YczE+zonlRqA5QQ3b5PITyo/BVl5RwlvsSeJeMp+EoSpw2kmtWdv109g9PQf8+y8u8 bd0DwfzAaouvveNg3ywhoLZo1D2wjN1kPPmTjo5D2jjyWb/LCCalAJpbyM3TdQZezRr1v0lTgp+ x39bPr2Xfxktu93fnWLk3DHRNsUWuWQIc6RXYNJdYKgViw3CEoGp4zBekomORenas6ZSBXszEA6 uq8OGO4pe5Y5scQwToh7Os0zEG7pY5W8AXFck4az5CiflVRKGrlnCUinF1ic4Ya/k5Nsmj5xnio zgYyjwUxuDlz1p9Ibjw== X-Authority-Analysis: v=2.4 cv=Q/7fIo2a c=1 sm=1 tr=0 ts=699c83a9 cx=c_pps a=QffN0g5EZ+Wxgj/Qwxz7mA==: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=iX4cTi3TZMoOKdANLEfx:22 a=KfkQE9S9VqCBgivYGm0O:22 a=w1d2syhTAAAA:8 a=lkpMduq5xU4BuurvtsEA:9 a=QEXdDO2ut3YA:10 X-Proofpoint-GUID: fIbFwPvRNKyGIR9jXRZsSr8PnNmDYzq5 X-Proofpoint-ORIG-GUID: fIbFwPvRNKyGIR9jXRZsSr8PnNmDYzq5 X-Proofpoint-Spam-Reason: safe On 23/02/2026 4:05 pm, Stefan Binding wrote: > For some parts, the DSP is kept running when in low power mode > (hibernation), leaving the firmware ALSA controls enabled, but the > registers are inaccessible. Attempts to access volatile firmware > controls whilst in this state would produce errors in the kernel log > due to a regmap_raw_read() into DSP registers whilst the regmap is in > cache_only. > > To remove this error log, add a hibernating flag to indicate that the > controls are inaccessible, so we no longer try to read or write to the > registers whilst the regmap is in cache_only. > > This would still produce an error when trying to read or write to these > controls, but this would be a different error (-EPERM instead of > -EBUSY), and would not produce a spurious error log in the kernel. > > Upon wake from hibernation, the control caches are re-synced to the > hardware, if the DSP is running. > > Signed-off-by: Stefan Binding > --- Reviewed-by: Richard Fitzgerald