Commit b4287df8 authored May 04, 2015 by Chris Metcalf

drivers/tty/hvc/hvc_tile.c: properly return -EAGAIN

We were returning zero if no bytes could be written to the Tilera
hypervisor console device, but this causes the output to be truncated.
By returning -EAGAIN the tty hvc driver will come back and try again,
which gives the semantics we want, and avoids dropping console output.

Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>

parent 5bf6c07a

drivers/tty/hvc/hvc_tile.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -51,7 +51,8 @@ int tile_console_write(const char *buf, int count)
		_SIM_CONTROL_OPERATOR_BITS));
		return 0;
		} else {
		return hv_console_write((HV_VirtAddr)buf, count);
		/* Translate 0 bytes written to EAGAIN for hvc_console_print. */
		return hv_console_write((HV_VirtAddr)buf, count) ?: -EAGAIN;
		}
		}