AcoSail/kernel_optimize_test
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[PATCH] powerpc: fix up iSeries console after TTY layer buffering revamp

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Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Stephen Rothwell 2006-01-11 13:51:22 +11:00 committed by Paul Mackerras
parent 7a0268fa1a
commit 415c2e083a
1 changed files with 4 additions and 3 deletions
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7
drivers/char/viocons.c
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@ -904,6 +904,7 @@ static void vioHandleData(struct HvLpEvent *event)
struct viocharlpevent *cevent = (struct viocharlpevent *)event;
struct port_info *pi;
int index;
int num_pushed;
u8 port = cevent->virtual_device;
if (port >= VTTY_PORTS) {
@ -964,6 +965,7 @@ static void vioHandleData(struct HvLpEvent *event)
* functionality will only work if built into the kernel and
* then only if sysrq is enabled through the proc filesystem.
*/
num_pushed = 0;
for (index = 0; index < cevent->len; index++) {
#ifdef CONFIG_MAGIC_SYSRQ
if (sysrq_enabled) {
@ -997,11 +999,10 @@ static void vioHandleData(struct HvLpEvent *event)
printk(VIOCONS_KERN_WARN "input buffer overflow!\n");
break;
}
num_pushed++;
}
/* if cevent->len == 0 then no data was added to the buffer and flip.count == 0 */
if (tty->flip.count)
/* The next call resets flip.count when the data is flushed. */
if (num_pushed)
tty_flip_buffer_push(tty);
}