Re: [PATCH 12/15] can: tcan4x5x: Remove invalid write in clear_interrupts
From: Marc Kleine-Budde <mkl@pengutronix.de>
Date: 2022-12-02 14:18:15
Also in:
linux-can, lkml
On 16.11.2022 21:53:05, Markus Schneider-Pargmann wrote:
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>
Please add a fixes tag. Marc
quoted hunk ↗ jump to hunk
--- 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
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