[PATCH 12/15] can: tcan4x5x: Remove invalid write in clear_interrupts - Markus Schneider-Pargmann

From: Markus Schneider-Pargmann <msp@baylibre.com>
To: Chandrasekar Ramakrishnan <rcsekar@samsung.com>,
	Marc Kleine-Budde <mkl@pengutronix.de>,
	Wolfgang Grandegger <wg@grandegger.com>
Cc: linux-can@vger.kernel.org, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	Markus Schneider-Pargmann <msp@baylibre.com>
Subject: [PATCH 12/15] can: tcan4x5x: Remove invalid write in clear_interrupts
Date: Wed, 16 Nov 2022 21:53:05 +0100	[thread overview]
Message-ID: <20221116205308.2996556-13-msp@baylibre.com> (raw)
In-Reply-To: <20221116205308.2996556-1-msp@baylibre.com>

Register 0x824 TCAN4X5X_MCAN_INT_REG is a read-only register. Any writes
to this register do not have any effect.

Remove this write. The m_can driver aldready clears the interrupts in
m_can_isr() by writing to M_CAN_IR which is translated to register
0x1050 which is a writable version of this register.

Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
---
 drivers/net/can/m_can/tcan4x5x-core.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/net/can/m_can/tcan4x5x-core.c b/drivers/net/can/m_can/tcan4x5x-core.c
index 41645a24384c..1fec394b3517 100644
--- a/drivers/net/can/m_can/tcan4x5x-core.c
+++ b/drivers/net/can/m_can/tcan4x5x-core.c
@@ -204,11 +204,6 @@ static int tcan4x5x_clear_interrupts(struct m_can_classdev *cdev)
 	if (ret)
 		return ret;
 
-	ret = tcan4x5x_write_tcan_reg(cdev, TCAN4X5X_MCAN_INT_REG,
-				      TCAN4X5X_ENABLE_MCAN_INT);
-	if (ret)
-		return ret;
-
 	ret = tcan4x5x_write_tcan_reg(cdev, TCAN4X5X_INT_FLAGS,
 				      TCAN4X5X_CLEAR_ALL_INT);
 	if (ret)
-- 
2.38.1

