[PATCH v2 08/11] can: tcan4x5x: Remove invalid write in clear_interrupts

From: Markus Schneider-Pargmann
Date: Tue Dec 06 2022 - 06:58:19 EST


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 <msp@xxxxxxxxxxxx>
---

Notes:
v2:
- Add fixes tag

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