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From: mani@kernel.org
To: gregkh@linuxfoundation.org
Cc: hemantk@codeaurora.org, jhugo@codeaurora.org,
	linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
	Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Subject: [PATCH 12/14] bus: mhi: core: Do not process SYS_ERROR if RDDM is supported
Date: Thu, 21 May 2020 20:55:38 +0530
Message-ID: <20200521152540.17335-13-mani@kernel.org> (raw)
In-Reply-To: <20200521152540.17335-1-mani@kernel.org>

From: Hemant Kumar <hemantk@codeaurora.org>

Devices that support RDDM do not require processing SYS_ERROR as it is
deemed redundant. Avoid SYS_ERROR processing if RDDM is supported by
the device.

Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>
Reviewed-by: Jeffrey Hugo <jhugo@codeaurora.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
 drivers/bus/mhi/core/main.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/bus/mhi/core/main.c b/drivers/bus/mhi/core/main.c
index 7429189840b0..eef145180a55 100644
--- a/drivers/bus/mhi/core/main.c
+++ b/drivers/bus/mhi/core/main.c
@@ -396,9 +396,9 @@ irqreturn_t mhi_intvec_threaded_handler(int irq_number, void *priv)
 	}
 	write_unlock_irq(&mhi_cntrl->pm_lock);
 
-	/* If device in RDDM don't bother processing SYS error */
-	if (mhi_cntrl->ee == MHI_EE_RDDM) {
-		if (mhi_cntrl->ee != ee) {
+	 /* If device supports RDDM don't bother processing SYS error */
+	if (mhi_cntrl->rddm_image) {
+		if (mhi_cntrl->ee == MHI_EE_RDDM && mhi_cntrl->ee != ee) {
 			mhi_cntrl->status_cb(mhi_cntrl, MHI_CB_EE_RDDM);
 			wake_up_all(&mhi_cntrl->state_event);
 		}
@@ -734,6 +734,11 @@ int mhi_process_ctrl_ev_ring(struct mhi_controller *mhi_cntrl,
 			{
 				enum mhi_pm_state new_state;
 
+				/* skip SYS_ERROR handling if RDDM supported */
+				if (mhi_cntrl->ee == MHI_EE_RDDM ||
+				    mhi_cntrl->rddm_image)
+					break;
+
 				dev_dbg(dev, "System error detected\n");
 				write_lock_irq(&mhi_cntrl->pm_lock);
 				new_state = mhi_tryset_pm_state(mhi_cntrl,
-- 
2.26.GIT


  parent reply index

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-21 15:25 [PATCH 00/14] MHI patches for v5.8 mani
2020-05-21 15:25 ` [PATCH 01/14] bus: mhi: core: Refactor mhi queue APIs mani
2020-05-21 15:25 ` [PATCH 02/14] bus: mhi: core: Cache intmod from mhi event to mhi channel mani
2020-05-21 15:25 ` [PATCH 03/14] bus: mhi: core: Add range check for channel id received in event ring mani
2020-05-21 15:25 ` [PATCH 04/14] bus: mhi: core: Read transfer length from an event properly mani
2020-05-21 15:25 ` [PATCH 05/14] bus: mhi: core: Handle firmware load using state worker mani
2020-05-21 15:25 ` [PATCH 06/14] bus: mhi: core: Return appropriate error codes for AMSS load failure mani
2020-05-21 15:25 ` [PATCH 07/14] bus: mhi: core: Improve debug logs for loading firmware mani
2020-05-21 15:25 ` [PATCH 08/14] bus: mhi: core: Ensure non-zero session or sequence ID values are used mani
2020-05-21 15:25 ` [PATCH 09/14] bus: mhi: core: Remove the system error worker thread mani
2020-05-21 15:25 ` [PATCH 10/14] bus: mhi: core: Handle disable transitions in state worker mani
2020-05-21 15:25 ` [PATCH 11/14] bus: mhi: core: Skip handling BHI irq if MHI reg access is not allowed mani
2020-05-21 15:25 ` mani [this message]
2020-05-21 15:25 ` [PATCH 13/14] bus: mhi: core: Handle write lock properly in mhi_pm_m0_transition mani
2020-05-21 15:25 ` [PATCH 14/14] bus: mhi: core: Handle syserr during power_up mani
2020-05-21 15:29 ` [PATCH 00/14] MHI patches for v5.8 Manivannan Sadhasivam
2020-05-21 16:19   ` Greg KH

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