The SHM bridge makes the Qualcomm RB3 and SM8150-HDK reset while probing
the RMTFS (in qcom_scm_assign_mem()). Blacklist the SHM Bridge on
corresponding platforms using SoC-level compat string. If later it's
found that the bad behaviour is limited just to the particular boards
rather than SoC, the compat strings can be adjusted.
Reported-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
Fixes: f86c61498a57 ("firmware: qcom: tzmem: enable SHM Bridge support")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
---
drivers/firmware/qcom/qcom_tzmem.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/firmware/qcom/qcom_tzmem.c b/drivers/firmware/qcom/qcom_tzmem.c
index 5d526753183d..c715729f071c 100644
--- a/drivers/firmware/qcom/qcom_tzmem.c
+++ b/drivers/firmware/qcom/qcom_tzmem.c
@@ -78,6 +78,8 @@ 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,sc8180x",
+ "qcom,sdm845", /* reset in rmtfs memory assignment */
+ "qcom,sm8150", /* reset in rmtfs memory assignment */
NULL
};
---
base-commit: 82e4255305c554b0bb18b7ccf2db86041b4c8b6e
change-id: 20240704-shmbridge-blacklist-021bd97b8a93
Best regards,
--
Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
