3D-printing/klipper
1
0
Fork 0
mirror of https://github.com/Klipper3d/klipper.git synced 2025-07-16 11:17:52 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions 2

io.h: read/write[bwl] should use barrier

Browse source 
Add barrier() calls to low-level read/write io calls so that their
callers don't need to.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2017-01-23 11:13:19 -05:00
parent 9c1bf1387c
commit 5beceaae5c
3 changed files with 13 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

3
src/avr/serial.c
View file

@ -126,12 +126,10 @@ console_get_output(uint8_t len)
return NULL;
// Disable TX irq and move buffer
writeb(&transmit_max, 0);
barrier();
tpos = readb(&transmit_pos);
tmax -= tpos;
memmove(&transmit_buf[0], &transmit_buf[tpos], tmax);
writeb(&transmit_pos, 0);
barrier();
writeb(&transmit_max, tmax);
enable_tx_irq();
return &transmit_buf[tmax];
@ -141,7 +139,6 @@ console_get_output(uint8_t len)
void
console_push_output(uint8_t len)
{
barrier();
writeb(&transmit_max, readb(&transmit_max) + len);
enable_tx_irq();
}