mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/
synced 2026-09-22 18:22:42 +00:00
3b6330ce2a
The hardware must not see that is given ownership of a buffer until it is completely written, and when the driver receives ownership of a buffer, it must ensure that any other reads to the buffer reflect its final state. Thus, I/O barriers are added where required. Without this patch, I have observed GCC reordering the setting of bdp->length and bdp->status in gfar_new_skb. Hardware reordering was also theoretically possible. Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
1989 lines
52 KiB
1989 lines
52 KiB