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linux/drivers/net/can/m_can
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Torin Cooper-Bennun 2712625200 can: tcan4x5x: tcan4x5x_init(): fix initialization - clear MRAM before entering Normal Mode 
This patch prevents a potentially destructive race condition. The
device is fully operational on the bus after entering Normal Mode, so
zeroing the MRAM after entering this mode may lead to loss of
information, e.g. new received messages.

This patch fixes the problem by first initializing the MRAM, then
bringing the device into Normale Mode.

Fixes: 5443c226ba ("can: tcan4x5x: Add tcan4x5x driver to the kernel")
Link: https://lore.kernel.org/r/20210226163440.313628-1-torin@maxiluxsystems.com
Suggested-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Torin Cooper-Bennun <torin@maxiluxsystems.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2021-03-01 11:45:15 +01:00
..
Kconfig can: m_can: add PCI glue driver for Intel Elkhart Lake 2020-12-10 10:40:10 +01:00
m_can_pci.c can: m_can: use struct m_can_classdev as drvdata 2020-12-14 14:24:17 +01:00
m_can_platform.c can: m_can: use struct m_can_classdev as drvdata 2020-12-14 14:24:17 +01:00
m_can.c can: dev: can_get_echo_skb(): extend to return can frame length 2021-01-14 08:43:43 +01:00
m_can.h can: m_can: let m_can_class_allocate_dev() allocate driver specific private data 2020-12-14 14:24:14 +01:00
Makefile can: tcan4x5x: move regmap code into seperate file 2021-01-06 15:15:37 +01:00
tcan4x5x-core.c can: tcan4x5x: tcan4x5x_init(): fix initialization - clear MRAM before entering Normal Mode 2021-03-01 11:45:15 +01:00
tcan4x5x-regmap.c can: tcan4x5x: add support for half-duplex controllers 2021-01-06 15:15:41 +01:00
tcan4x5x.h can: tcan4x5x: remove __packed attribute from struct tcan4x5x_map_buf 2021-01-14 08:43:44 +01:00