linux-kernel - [PATCH 5/5] bus: mhi: core: Move MHI_MAX

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Message-Id: <20200927033652.11789-6-manivannan.sadhasivam@linaro.org>
Date:   Sun, 27 Sep 2020 09:06:52 +0530
From:   Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To:     gregkh@...uxfoundation.org
Cc:     hemantk@...eaurora.org, bbhatt@...eaurora.org,
        linux-arm-msm@...r.kernel.org, jhugo@...eaurora.org,
        linux-kernel@...r.kernel.org,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Subject: [PATCH 5/5] bus: mhi: core: Move MHI_MAX_MTU to external header file

From: Hemant Kumar <hemantk@...eaurora.org>

Currently this macro is defined in internal MHI header as
a TRE length mask. Moving it to external header allows MHI
client drivers to set this upper bound for the transmit
buffer size.

Signed-off-by: Hemant Kumar <hemantk@...eaurora.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
---
 drivers/bus/mhi/core/internal.h | 1 -
 include/linux/mhi.h             | 3 +++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/bus/mhi/core/internal.h b/drivers/bus/mhi/core/internal.h
index 33c23203c531..3e41edae829c 100644
--- a/drivers/bus/mhi/core/internal.h
+++ b/drivers/bus/mhi/core/internal.h
@@ -453,7 +453,6 @@ enum mhi_pm_state {
 #define CMD_EL_PER_RING			128
 #define PRIMARY_CMD_RING		0
 #define MHI_DEV_WAKE_DB			127
-#define MHI_MAX_MTU			0xffff
 #define MHI_RANDOM_U32_NONZERO(bmsk)	(prandom_u32_max(bmsk) + 1)
 
 enum mhi_er_type {
diff --git a/include/linux/mhi.h b/include/linux/mhi.h
index 6522a4adc794..10ebda44ea3c 100644
--- a/include/linux/mhi.h
+++ b/include/linux/mhi.h
@@ -15,6 +15,9 @@
 #include <linux/wait.h>
 #include <linux/workqueue.h>
 
+/* MHI client drivers to set this upper bound for tx buffer */
+#define MHI_MAX_MTU 0xffff
+
 #define MHI_MAX_OEM_PK_HASH_SEGMENTS 16
 
 struct mhi_chan;
-- 
2.17.1