iommu/mediatek: Always enable the clk on resume
In mtk_iommu_runtime_resume always enable the clk, even
if m4u_dom is null. Otherwise the 'suspend' cb might
disable the clk which is already disabled causing the warning:
[ 1.586104] infra_m4u already disabled
[ 1.586133] WARNING: CPU: 0 PID: 121 at drivers/clk/clk.c:952 clk_core_disable+0xb0/0xb8
[ 1.594391] mtk-iommu 10205000.iommu: bound 18001000.larb (ops mtk_smi_larb_component_ops)
[ 1.598108] Modules linked in:
[ 1.598114] CPU: 0 PID: 121 Comm: kworker/0:2 Not tainted 5.12.0-rc5 #69
[ 1.609246] mtk-iommu 10205000.iommu: bound 14027000.larb (ops mtk_smi_larb_component_ops)
[ 1.617487] Hardware name: Google Elm (DT)
[ 1.617491] Workqueue: pm pm_runtime_work
[ 1.620545] mtk-iommu 10205000.iommu: bound 19001000.larb (ops mtk_smi_larb_component_ops)
[ 1.627229] pstate: 60000085 (nZCv daIf -PAN -UAO -TCO BTYPE=--)
[ 1.659297] pc : clk_core_disable+0xb0/0xb8
[ 1.663475] lr : clk_core_disable+0xb0/0xb8
[ 1.667652] sp : ffff800011b9bbe0
[ 1.670959] x29: ffff800011b9bbe0 x28: 0000000000000000
[ 1.676267] x27: ffff800011448000 x26: ffff8000100cfd98
[ 1.681574] x25: ffff800011b9bd48 x24: 0000000000000000
[ 1.686882] x23: 0000000000000000 x22: ffff8000106fad90
[ 1.692189] x21: 000000000000000a x20: ffff0000c0048500
[ 1.697496] x19: ffff0000c0048500 x18: ffffffffffffffff
[ 1.702804] x17: 0000000000000000 x16: 0000000000000000
[ 1.708112] x15: ffff800011460300 x14: fffffffffffe0000
[ 1.713420] x13: ffff8000114602d8 x12: 0720072007200720
[ 1.718727] x11: 0720072007200720 x10: 0720072007200720
[ 1.724035] x9 : ffff800011b9bbe0 x8 : ffff800011b9bbe0
[ 1.729342] x7 : 0000000000000009 x6 : ffff8000114b8328
[ 1.734649] x5 : 0000000000000000 x4 : 0000000000000000
[ 1.739956] x3 : 00000000ffffffff x2 : ffff800011460298
[ 1.745263] x1 : 1af1d7de276f4500 x0 : 0000000000000000
[ 1.750572] Call trace:
[ 1.753010] clk_core_disable+0xb0/0xb8
[ 1.756840] clk_core_disable_lock+0x24/0x40
[ 1.761105] clk_disable+0x20/0x30
[ 1.764501] mtk_iommu_runtime_suspend+0x88/0xa8
[ 1.769114] pm_generic_runtime_suspend+0x2c/0x48
[ 1.773815] __rpm_callback+0xe0/0x178
[ 1.777559] rpm_callback+0x24/0x88
[ 1.781041] rpm_suspend+0xdc/0x470
[ 1.784523] rpm_idle+0x12c/0x170
[ 1.787831] pm_runtime_work+0xa8/0xc0
[ 1.791573] process_one_work+0x1e8/0x360
[ 1.795580] worker_thread+0x44/0x478
[ 1.799237] kthread+0x150/0x158
[ 1.802460] ret_from_fork+0x10/0x30
[ 1.806034] ---[ end trace 82402920ef64573b ]---
[ 1.810728] ------------[ cut here ]------------
In addition, we now don't need to enable the clock from the
function mtk_iommu_hw_init since it is already enabled by the resume.
No advisories yet.
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Fri, 06 Dec 2024 19:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Linux
Linux linux Kernel |
|
| Weaknesses | NVD-CWE-noinfo | |
| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Linux
Linux linux Kernel |
|
| Metrics |
cvssV3_1
|
cvssV3_1
|
Mon, 04 Nov 2024 13:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Projects
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Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2025-05-04T07:02:32.844Z
Reserved: 2024-02-27T18:42:55.960Z
Link: CVE-2021-47025
Updated: 2024-08-04T05:24:39.248Z
Status : Analyzed
Published: 2024-02-28T09:15:39.290
Modified: 2024-12-06T18:52:52.237
Link: CVE-2021-47025
OpenCVE Enrichment
No data.