gitops/mt76
1
0
Fork 0
mirror of https://github.com/outbackdingo/mt76.git synced 2026-10-24 21:36:52 +00:00
Code Issues Packages Projects Releases Wiki Activity
3,607 Commits 16 Branches 0 Tags
d480c3281f2113476cf85df61d51ee27f1f00a21
Commit Graph
5 Commits
Author SHA1 Message Date
Aaron MaandFelix Fietkau 9107381d0f wifi: mt76: mt7921: fix error code of return in mt7921_acpi_read 
Kernel NULL pointer dereference when ACPI SAR table isn't implemented well.
Fix the error code of return to mark the ACPI SAR table as invalid.

[    5.077128] mt7921e 0000:06:00.0: sar cnt = 0
[    5.077381] BUG: kernel NULL pointer dereference, address:
0000000000000004
[    5.077630] #PF: supervisor read access in kernel mode
[    5.077883] #PF: error_code(0x0000) - not-present page
[    5.078138] PGD 0 P4D 0
[    5.078398] Oops: 0000 [#1] PREEMPT SMP NOPTI
[    5.079202] RIP: 0010:mt7921_init_acpi_sar+0x106/0x220
[mt7921_common]
...
[    5.080786] Call Trace:
[    5.080786]  <TASK>
[    5.080786]  mt7921_register_device+0x37d/0x490 [mt7921_common]
[    5.080786]  mt7921_pci_probe.part.0+0x2ee/0x310 [mt7921e]
[    5.080786]  mt7921_pci_probe+0x52/0x70 [mt7921e]
[    5.080786]  local_pci_probe+0x47/0x90
[    5.080786]  pci_call_probe+0x55/0x190
[    5.080786]  pci_device_probe+0x84/0x120

Fixes: f965333e491e ("mt76: mt7921: introduce ACPI SAR support")
Signed-off-by: Aaron Ma <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
 2023-02-02 11:03:57 +01:00
Quan ZhouandFelix Fietkau 063823aba9 wifi: mt76: mt7921: add support to update fw capability with MTFG table 
In ACPI enabled devices, mt7921 should read MTFG table from platform
hardware. Apply necessary settings for firmware capabilities through CLC
command.

Co-developed-by: Deren Wu <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Quan Zhou <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
 2022-12-10 13:11:05 +01:00
Dan CarpenterandFelix Fietkau 9dd7be2c51 wifi: mt76: mt7921: fix use after free in mt7921_acpi_read() 
Don't dereference "sar_root" after it has been freed.

Fixes: f965333e491e ("mt76: mt7921: introduce ACPI SAR support")
Signed-off-by: Dan Carpenter <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
 2022-09-15 13:12:37 +02:00
Deren WuandFelix Fietkau 4554ee652c mt76: mt7921: fix warning Using plain integer as NULL pointer 
Changed "0 to NULL" to avoid below sparse warnings
.../mt76/mt7921/acpi_sar.c:64:68: sparse: Using plain integer as NULL pointer

Fixes: ab79a7d7a96f ("mt76: mt7921: introduce ACPI SAR support")
Reported-by: kernel test robot <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
 2022-06-17 11:57:33 +02:00
Deren WuandFelix Fietkau 268ce38e9e mt76: mt7921: introduce ACPI SAR support 
In ACPI SAR enabled device, mt7921 should read power limit in ACPI config.
The limit value would be applied to regular tx power settings in mt76.

Two major functionalities added:
1. Get SAR power table through ACPI.
2. Read power in Dynamic/Geo SAR table for tx power limit.

Table note
MTDS: Dynamic SAR table
MTGS: Geo SAR table
MTCL: Country List table (for 6GHz support)

Reviewed-by: Sean Wang <[email protected]>
Co-developed-by: Quan Zhou <[email protected]>
Signed-off-by: Quan Zhou <[email protected]>
Co-developed-by: Ming Yen Hsieh <[email protected]>
Signed-off-by: Ming Yen Hsieh <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
 2022-06-02 21:39:30 +02:00