There are several functions which are calling qcom_scm_bw_enable()
then returns immediately if the call fails and leaves the clocks
enabled.
Change the code of these functions to disable clocks when the
qcom_scm_bw_enable() call fails. This also fixes a possible dma
buffer leak in the qcom_scm_pas_init_image() function.
Compile tested only due to lack of hardware with interconnect
support.
Cc: stable@xxxxxxxxxxxxxxx
Fixes: 65b7ebda5028 ("firmware: qcom_scm: Add bw voting support to the SCM interface")
Signed-off-by: Gabor Juhos <j4g8y7@xxxxxxxxx>
---
Based on v6.8-rc7.
Note: Removing the two empty lines from qcom_scm_pas_init_image()
and fomr qcom_scm_pas_shutdown() functions is intentional to make
those consistent with the other two functions.
---
drivers/firmware/qcom/qcom_scm.c | 18 ++++++++++++------
1 file changed, 12 insertions(+), 6 deletions(-)
diff --git a/drivers/firmware/qcom/qcom_scm.c b/drivers/firmware/qcom/qcom_scm.c
index 520de9b5633ab..e8460626fb0c4 100644
--- a/drivers/firmware/qcom/qcom_scm.c
+++ b/drivers/firmware/qcom/qcom_scm.c
@@ -569,13 +569,14 @@ int qcom_scm_pas_init_image(u32 peripheral, const void *metadata, size_t size,
ret = qcom_scm_bw_enable();
if (ret)
- return ret;
+ goto disable_clk;
desc.args[1] = mdata_phys;
ret = qcom_scm_call(__scm->dev, &desc, &res);
-
qcom_scm_bw_disable();
+
+disable_clk:
qcom_scm_clk_disable();
out:
@@ -637,10 +638,12 @@ int qcom_scm_pas_mem_setup(u32 peripheral, phys_addr_t addr, phys_addr_t size)
ret = qcom_scm_bw_enable();
if (ret)
- return ret;
+ goto disable_clk;
ret = qcom_scm_call(__scm->dev, &desc, &res);
qcom_scm_bw_disable();
+
+disable_clk:
qcom_scm_clk_disable();
return ret ? : res.result[0];
@@ -672,10 +675,12 @@ int qcom_scm_pas_auth_and_reset(u32 peripheral)
ret = qcom_scm_bw_enable();
if (ret)
- return ret;
+ goto disable_clk;
ret = qcom_scm_call(__scm->dev, &desc, &res);
qcom_scm_bw_disable();
+
+disable_clk:
qcom_scm_clk_disable();
return ret ? : res.result[0];
@@ -706,11 +711,12 @@ int qcom_scm_pas_shutdown(u32 peripheral)
ret = qcom_scm_bw_enable();
if (ret)
- return ret;
+ goto disable_clk;
ret = qcom_scm_call(__scm->dev, &desc, &res);
-
qcom_scm_bw_disable();
+
+disable_clk:
qcom_scm_clk_disable();
return ret ? : res.result[0];
---
base-commit: 90d35da658da8cff0d4ecbb5113f5fac9d00eb72
change-id: 20240304-qcom-scm-disable-clk-08e7ad853fa1
Best regards,
--
Gabor Juhos <j4g8y7@xxxxxxxxx>
