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Commit 15433768 authored by Julian Calaby's avatar Julian Calaby Committed by David S. Miller
Browse files

sparc: prom: Sanitize return value from prom_nbputchar() 



Signed-off-by: default avatarJulian Calaby <julian.calaby@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 23bcbf1b

arch/sparc/prom/console_32.c

+4 −3
Original line number Diff line number Diff line
@@ -27,13 +27,14 @@ static int prom_nbputchar(const char *buf) 
	spin_lock_irqsave(&prom_lock, flags);

	switch(prom_vers) {

	case PROM_V0:

		i = (*(romvec->pv_nbputchar))(*buf);

		if ((*(romvec->pv_nbputchar))(*buf))

			i = 1;

		break;

	case PROM_V2:

	case PROM_V3:

		if ((*(romvec->pv_v2devops).v2_dev_write)(*romvec->pv_v2bootargs.fd_stdout,

							  buf, 0x1) == 1)

			i = 0;

			i = 1;

		break;

	default:

		break;
@@ -47,7 +48,7 @@ void prom_console_write_buf(const char *buf, int len) 
{

	while (len) {

		int n = prom_nbputchar(buf);

		if (n)

		if (n < 0)

			continue;

		len--;

		buf++;