From: Markus Schneider-Pargmann Date: Tue, 6 Dec 2022 11:57:25 +0000 (+0100) Subject: can: tcan4x5x: Remove invalid write in clear_interrupts X-Git-Tag: v5.15.92~1127 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=55064642aac1dc06897bad855777e2031c4c180c;p=platform%2Fkernel%2Flinux-rpi.git can: tcan4x5x: Remove invalid write in clear_interrupts [ Upstream commit 40c9e4f676abbe194541d88e796341c92d5a13c0 ] 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. Fixes: 5443c226ba91 ("can: tcan4x5x: Add tcan4x5x driver to the kernel") Signed-off-by: Markus Schneider-Pargmann Link: https://lore.kernel.org/all/20221206115728.1056014-9-msp@baylibre.com Signed-off-by: Marc Kleine-Budde Signed-off-by: Sasha Levin --- diff --git a/drivers/net/can/m_can/tcan4x5x-core.c b/drivers/net/can/m_can/tcan4x5x-core.c index 04687b1..9b735ec 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)