27175946c4
In upstream Linux kernel commits:
95713967ba52389f7cea75704d0cf048080ec218 ("tty: make tty_operations::write()'s count size_t")
69851e4ab8feeb369119a44ddca430c0ee15f0d8 ("tty: propagate u8 data to tty_operations::write()")
The prototype of tty_operations->write() was changed from:
int (*write)(struct tty_struct * tty,
const unsigned char *buf, int count);
to:
ssize_t (*write)(struct tty_struct *tty, const u8 *buf, size_t count);
Both of those commits were merged in Linux 6.6, and this needs an
update in tty/module.c to avoid the following build failure:
/home/autobuild/autobuild/instance-7/output-1/build/igh-ethercat-1.6.2/./tty/module.c:740:14: error: initialization of "ssize_t (*)(struct tty_struct *, const u8 *, size_t)" {aka "long int (*)(struct tty_struct *, const unsigned char *, long unsigned int)"} from incompatible pointer type "int (*)(struct tty_struct *, const unsigned char *, int)" [-Werror=incompatible-pointer-types]
740 | .write = ec_tty_write,
| ^~~~~~~~~~~~
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
|
||
|---|---|---|
| .. | ||
| Kbuild.in | ||
| Makefile.am | ||
| README | ||
| module.c | ||
README
vim700: spelllang=en spell Virtual TTY interface driver for EtherCAT slave supporting serial comm Quick installation guide: ./configure --with-linux-dir=/your/linux/directory --enable-tty make all modules make modules_install install rcethercat start insmod tty/ec_tty.ko insmod examples/tty/ec_tty_example.ko The default settings for the serial line are 9600 8 N 1. The tty example operates a Beckhoff EL6002 at ring position 1. For a short test, connect port X1 with a serial port via null modem cable. If a minicom is started on that port and the below command is entered, the output should be visible in minicom: echo "Hello World" > /dev/ttyEC0 Have a lot of fun!