kernel/linux.git/drivers/tty/serial/liteuart.c, branch linux-5.11.yLinux kernel stable tree (mirror)https://git.radix-linux.su/kernel/linux.git/atom?h=linux-5.11.y2021-05-14T08:49:36+00:00serial: liteuart: fix return value check in liteuart_probe()2021-05-14T08:49:36+00:00Wei Yongjunweiyongjun1@huawei.com2021-03-05T03:49:29+00:00urn:sha1:6030fa690b84e6c84795603a68746786cc8af865
[ Upstream commit cebeddd6d0d9f839b9df2930b6a768b54913a763 ]
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 <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Link: https://lore.kernel.org/r/20210305034929.3234352-1-weiyongjun1@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/tty/serial: add LiteUART driver2020-11-09T12:07:01+00:00Filip Kokosinskifkokosinski@antmicro.com2020-10-13T14:46:21+00:00urn:sha1:1da81e5562fac8286567422cc56a7fbd0dc646d4
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 <fkokosinski@antmicro.com>
Signed-off-by: Mateusz Holenko <mholenko@antmicro.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Stafford Horne <shorne@gmail.com>