6.17-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nikita Travkin nikita@trvn.ru
[ Upstream commit 3cc9a8cadaf66e1a53e5fee48f8bcdb0a3fd5075 ]
When SHM bridge is enabled, assigning RMTFS memory causes the calling core to hang if the system is running in EL1.
Disable SHM bridge on sc7180 devices to avoid that hang.
Signed-off-by: Nikita Travkin nikita@trvn.ru Reviewed-by: Dmitry Baryshkov dmitry.baryshkov@oss.qualcomm.com Link: https://lore.kernel.org/r/20250721-sc7180-shm-hang-v1-1-99ad9ffeb5b4@trvn.ru Signed-off-by: Bjorn Andersson andersson@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/firmware/qcom/qcom_tzmem.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/firmware/qcom/qcom_tzmem.c b/drivers/firmware/qcom/qcom_tzmem.c index ea0a353556570..12e448669b8bd 100644 --- a/drivers/firmware/qcom/qcom_tzmem.c +++ b/drivers/firmware/qcom/qcom_tzmem.c @@ -77,6 +77,7 @@ static bool qcom_tzmem_using_shm_bridge;
/* List of machines that are known to not support SHM bridge correctly. */ static const char *const qcom_tzmem_blacklist[] = { + "qcom,sc7180", /* hang in rmtfs memory assignment */ "qcom,sc8180x", "qcom,sdm670", /* failure in GPU firmware loading */ "qcom,sdm845", /* reset in rmtfs memory assignment */