linux-stable.git/drivers/tty/serial/liteuart.c, branch linux-5.17.y

serial: liteuart: fix MODULE_ALIAS

2022-01-06T14:54:54+00:00

modprobe can't handle spaces in aliases.

Fixes: 1da81e5562fa ("drivers/tty/serial: add LiteUART driver")
Signed-off-by: Alyssa Ross 
Link: https://lore.kernel.org/r/20220104131030.1674733-1-hi@alyssa.is
Signed-off-by: Greg Kroah-Hartman

serial: liteuart: fix minor-number leak on probe errors

2021-11-25T17:25:49+00:00

Make sure to release the allocated minor number before returning on
probe errors.

Fixes: 1da81e5562fa ("drivers/tty/serial: add LiteUART driver")
Cc: stable@vger.kernel.org      # 5.11
Cc: Filip Kokosinski 
Cc: Mateusz Holenko 
Reviewed-by: Stafford Horne 
Reviewed-by: Andy Shevchenko 
Signed-off-by: Johan Hovold 
Link: https://lore.kernel.org/r/20211117100512.5058-3-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman

serial: liteuart: fix use-after-free and memleak on unbind

2021-11-25T17:25:49+00:00

Deregister the port when unbinding the driver to prevent it from being
used after releasing the driver data and leaking memory allocated by
serial core.

Fixes: 1da81e5562fa ("drivers/tty/serial: add LiteUART driver")
Cc: stable@vger.kernel.org      # 5.11
Cc: Filip Kokosinski 
Cc: Mateusz Holenko 
Reviewed-by: Stafford Horne 
Reviewed-by: Andy Shevchenko 
Signed-off-by: Johan Hovold 
Link: https://lore.kernel.org/r/20211117100512.5058-2-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman

serial: liteuart: Fix NULL pointer dereference in ->remove()

2021-11-25T17:25:24+00:00

drvdata has to be set in _probe() - otherwise platform_get_drvdata()
causes null pointer dereference BUG in _remove().

Fixes: 1da81e5562fa ("drivers/tty/serial: add LiteUART driver")
Cc: stable 
Reviewed-by: Johan Hovold 
Signed-off-by: Ilia Sergachev 
Link: https://lore.kernel.org/r/20211115224944.23f8c12b@dtkw
Signed-off-by: Greg Kroah-Hartman

serial: liteuart: Add support for earlycon

2021-05-20T14:35:01+00:00

Most litex boards using RISC-V soft cores us the sbi earlycon, however
this is not available for non RISC-V litex SoC's.  This patch enables
earlycon for liteuart which is available on all Litex SoC's making
support for earycon debugging more widely available.

Cc: Florent Kermarrec 
Cc: Mateusz Holenko 
Cc: Joel Stanley 
Cc: Gabriel L. Somlo 
Reviewed-and-tested-by: Gabriel Somlo 
Reviewed-by: Jiri Slaby 
Reviewed-by: Joel Stanley 
Signed-off-by: Stafford Horne 
Link: https://lore.kernel.org/r/20210517115453.24365-1-shorne@gmail.com
Signed-off-by: Greg Kroah-Hartman

serial: liteuart: fix return value check in liteuart_probe()

2021-03-10T08:34:10+00:00

In case of error, the function devm_platform_get_and_ioremap_resource()
returns ERR_PTR() and never returns NULL. The NULL test in the return
value check should be replaced with IS_ERR().

Fixes: 1da81e5562fa ("drivers/tty/serial: add LiteUART driver")
Reported-by: Hulk Robot 
Signed-off-by: Wei Yongjun 
Link: https://lore.kernel.org/r/20210305034929.3234352-1-weiyongjun1@huawei.com
Signed-off-by: Greg Kroah-Hartman

drivers/tty/serial: add LiteUART driver

2020-11-09T12:07:01+00:00

This commit adds driver for the FPGA-based LiteUART serial controller
from LiteX SoC builder.

The current implementation supports LiteUART configured
for 32 bit data width and 8 bit CSR bus width.

It does not support IRQ.

Signed-off-by: Filip Kokosinski 
Signed-off-by: Mateusz Holenko 
Reviewed-by: Greg Kroah-Hartman 
Signed-off-by: Stafford Horne