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| author | Amit Pundir <amit.pundir@linaro.org> | 2025-07-09 20:49:49 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2025-07-15 15:46:27 +0300 |
| commit | 834bce6a715ae9a9c4dce7892454a19adf22b013 (patch) | |
| tree | 885373b13c4e565e6590b8c1faafa22783cb7d6c /scripts/gdb/linux/timerlist.py | |
| parent | a628e69b6412dc02757a6a23f7f16ce0c14d71f1 (diff) | |
| download | linux-834bce6a715ae9a9c4dce7892454a19adf22b013.tar.xz | |
soundwire: Revert "soundwire: qcom: Add set_channel_map api support"
This reverts commit 7796c97df6b1b2206681a07f3c80f6023a6593d5.
This patch broke Dragonboard 845c (sdm845). I see:
Unexpected kernel BRK exception at EL1
Internal error: BRK handler: 00000000f20003e8 [#1] SMP
pc : qcom_swrm_set_channel_map+0x7c/0x80 [soundwire_qcom]
lr : snd_soc_dai_set_channel_map+0x34/0x78
Call trace:
qcom_swrm_set_channel_map+0x7c/0x80 [soundwire_qcom] (P)
sdm845_dai_init+0x18c/0x2e0 [snd_soc_sdm845]
snd_soc_link_init+0x28/0x6c
snd_soc_bind_card+0x5f4/0xb0c
snd_soc_register_card+0x148/0x1a4
devm_snd_soc_register_card+0x50/0xb0
sdm845_snd_platform_probe+0x124/0x148 [snd_soc_sdm845]
platform_probe+0x6c/0xd0
really_probe+0xc0/0x2a4
__driver_probe_device+0x7c/0x130
driver_probe_device+0x40/0x118
__device_attach_driver+0xc4/0x108
bus_for_each_drv+0x8c/0xf0
__device_attach+0xa4/0x198
device_initial_probe+0x18/0x28
bus_probe_device+0xb8/0xbc
deferred_probe_work_func+0xac/0xfc
process_one_work+0x244/0x658
worker_thread+0x1b4/0x360
kthread+0x148/0x228
ret_from_fork+0x10/0x20
Kernel panic - not syncing: BRK handler: Fatal exception
Dan has also reported following issues with the original patch
https://lore.kernel.org/all/33fe8fe7-719a-405a-9ed2-d9f816ce1d57@sabinyo.mountain/
Bug #1:
The zeroeth element of ctrl->pconfig[] is supposed to be unused. We
start counting at 1. However this code sets ctrl->pconfig[0].ch_mask = 128.
Bug #2:
There are SLIM_MAX_TX_PORTS (16) elements in tx_ch[] array but only
QCOM_SDW_MAX_PORTS + 1 (15) in the ctrl->pconfig[] array so it corrupts
memory like Yongqin Liu pointed out.
Bug 3:
Like Jie Gan pointed out, it erases all the tx information with the rx
information.
Cc: stable@vger.kernel.org # v6.15+
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Acked-by: Srinivas Kandagatla <srini@kernel.org>
Link: https://lore.kernel.org/r/20250709174949.8541-1-amit.pundir@linaro.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'scripts/gdb/linux/timerlist.py')
0 files changed, 0 insertions, 0 deletions