[PATCH v2 07/11] firmware: qcom: scm: make qcom_scm_lmh_dcvsh() use the SCM allocator

[Bartosz Golaszewski <brgl@bgdev.pl>]

From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

Let's use the new SCM memory allocator to obtain a buffer for this call
instead of using dma_alloc_coherent().

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
---
 drivers/firmware/qcom/qcom_scm.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/firmware/qcom/qcom_scm.c b/drivers/firmware/qcom/qcom_scm.c
index c0eb81069847..41095bf1d4d7 100644
--- a/drivers/firmware/qcom/qcom_scm.c
+++ b/drivers/firmware/qcom/qcom_scm.c
@@ -1314,8 +1314,6 @@ EXPORT_SYMBOL_GPL(qcom_scm_lmh_profile_change);
 int qcom_scm_lmh_dcvsh(u32 payload_fn, u32 payload_reg, u32 payload_val,
 		       u64 limit_node, u32 node_id, u64 version)
 {
-	dma_addr_t payload_phys;
-	u32 *payload_buf;
 	int ret, payload_size = 5 * sizeof(u32);
 
 	struct qcom_scm_desc desc = {
@@ -1330,7 +1328,8 @@ int qcom_scm_lmh_dcvsh(u32 payload_fn, u32 payload_reg, u32 payload_val,
 		.owner = ARM_SMCCC_OWNER_SIP,
 	};
 
-	payload_buf = dma_alloc_coherent(__scm->dev, payload_size, &payload_phys, GFP_KERNEL);
+	u32 *payload_buf __free(qcom_scm_mem) =
+				qcom_scm_mem_alloc(payload_size, GFP_KERNEL);
 	if (!payload_buf)
 		return -ENOMEM;
 
@@ -1340,11 +1339,10 @@ int qcom_scm_lmh_dcvsh(u32 payload_fn, u32 payload_reg, u32 payload_val,
 	payload_buf[3] = 1;
 	payload_buf[4] = payload_val;
 
-	desc.args[0] = payload_phys;
+	desc.args[0] = qcom_scm_mem_to_phys(payload_buf);
 
 	ret = qcom_scm_call(__scm->dev, &desc, NULL);
 
-	dma_free_coherent(__scm->dev, payload_size, payload_buf, payload_phys);
 	return ret;
 }
 EXPORT_SYMBOL_GPL(qcom_scm_lmh_dcvsh);
-- 
2.39.2