linux-kernel - [RESEND PATCH] ath11k: use MHI provided APIs to allocate and free MHI controller

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Date:   Tue, 17 Nov 2020 09:33:56 -0800
From:   Bhaumik Bhatt <bbhatt@...eaurora.org>
To:     kvalo@...eaurora.org, linux-wireless@...r.kernel.org
Cc:     manivannan.sadhasivam@...aro.org, linux-arm-msm@...r.kernel.org,
        hemantk@...eaurora.org, linux-kernel@...r.kernel.org,
        ath11k@...ts.infradead.org, Bhaumik Bhatt <bbhatt@...eaurora.org>
Subject: [RESEND PATCH] ath11k: use MHI provided APIs to allocate and free MHI controller

Use MHI provided APIs to allocate and free MHI controller to
improve MHI host driver handling. This also fixes a memory leak
as the MHI controller was allocated but never freed.

Signed-off-by: Bhaumik Bhatt <bbhatt@...eaurora.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
---
 drivers/net/wireless/ath/ath11k/mhi.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/ath/ath11k/mhi.c b/drivers/net/wireless/ath/ath11k/mhi.c
index aded9a7..1c9d9dc 100644
--- a/drivers/net/wireless/ath/ath11k/mhi.c
+++ b/drivers/net/wireless/ath/ath11k/mhi.c
@@ -218,7 +218,7 @@ int ath11k_mhi_register(struct ath11k_pci *ab_pci)
 	struct mhi_controller *mhi_ctrl;
 	int ret;
 
-	mhi_ctrl = kzalloc(sizeof(*mhi_ctrl), GFP_KERNEL);
+	mhi_ctrl = mhi_alloc_controller();
 	if (!mhi_ctrl)
 		return -ENOMEM;
 
@@ -234,7 +234,7 @@ int ath11k_mhi_register(struct ath11k_pci *ab_pci)
 	ret = ath11k_mhi_get_msi(ab_pci);
 	if (ret) {
 		ath11k_err(ab, "failed to get msi for mhi\n");
-		kfree(mhi_ctrl);
+		mhi_free_controller(mhi_ctrl);
 		return ret;
 	}
 
@@ -252,7 +252,7 @@ int ath11k_mhi_register(struct ath11k_pci *ab_pci)
 	ret = mhi_register_controller(mhi_ctrl, &ath11k_mhi_config);
 	if (ret) {
 		ath11k_err(ab, "failed to register to mhi bus, err = %d\n", ret);
-		kfree(mhi_ctrl);
+		mhi_free_controller(mhi_ctrl);
 		return ret;
 	}
 
@@ -265,6 +265,7 @@ void ath11k_mhi_unregister(struct ath11k_pci *ab_pci)
 
 	mhi_unregister_controller(mhi_ctrl);
 	kfree(mhi_ctrl->irq);
+	mhi_free_controller(mhi_ctrl);
 }
 
 static char *ath11k_mhi_state_to_str(enum ath11k_mhi_state mhi_state)
-- 
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