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X-MS-Exchange-CrossPremises-SCL: 1 X-MS-Exchange-CrossPremises-Processed-By-Journaling: Journal Agent X-OrganizationHeadersPreserved: GV1P192MB2540.EURP192.PROD.OUTLOOK.COM X-Proofpoint-GUID: ENL3x8tQ18dLEUnY7pG5s8goQDVc6n2s X-Proofpoint-ORIG-GUID: ENL3x8tQ18dLEUnY7pG5s8goQDVc6n2s X-Authority-Analysis: v=2.4 cv=H/WCA+Yi c=1 sm=1 tr=0 ts=689eec18 cx=c_pps a=OkXhrD8PvoFXecP6jN22mw==:117 a=6eWqkTHjU83fiwn7nKZWdM+Sl24=:19 a=z/mQ4Ysz8XfWz/Q5cLBRGdckG28=:19 a=lCpzRmAYbLLaTzLvsPZ7Mbvzbb8=:19 a=wKuvFiaSGQ0qltdbU6+NXLB8nM8=:19 a=Ol13hO9ccFRV9qXi2t6ftBPywas=:19 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=2OwXVqhp2XgA:10 a=8gLI3H-aZtYA:10 a=aEozRzyYmvxSZNhvtMIA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODE1MDA2NSBTYWx0ZWRfX65XWZUNvy46h agdzLAE0rfA4ck4T/ZDrTlWhSjwtGyEJZbB3mpb1i508couvou6ZPlUYTOqMTF734fYwEGF7oH2 HDfuB1GMLmlm/qGkXzQprFGe6kD+3Xutf+okrRBYiE4mbIblLeIbx+KSmDxnMLr9P7RSlBhSLzO ffOUEtHZcamGWfwD4CHqEVx9tZdXxjbEAQyJG0lBrDUI0xBd7ur4eSygJBJu3RKabN8vLsVxDMy 5BRa/zwaYjrj5U1r4oYurFtSDlATM+o1x12HKD0tMAGCbzdTL9ycimpyy5ILlbWAqvVNeDeEo8x dQ1T9nY37MYVtdtmO0v3GhSFgiG+AqwrcvFlLniB5Ttv9c8gdRCB4NgSmNvfq78t170QMbfooEy B4XUqHzQni7bw2Ja1qz+XMfN6TVtFg== Hello devs, I'm currently working on getting the 'ath12k' driver running on a big endian PowerPC platform and have encountered the following issue. In the function 'ath12k_dp_rx_process_reo_status', the REO status is determined by inspecting memory that the hardware has previously written via DMA. Specifically, during the call to 'ath12k_hal_srng_access_begin', the driver reads the value of 'hp_addr' for the destination ring (in my case, always with ID 21). On the big endian platform, this value is consistently 0, which prevents the REO status from being updated. Interestingly, DMA read/write accesses work fine for other rings, just not for this one. What makes the REO status ring so special? I couldn’t find anything in the initialization routine that would explain the difference. Could anyone give me a hint on what I should be looking for? Best regards Alexander Wilhelm