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Commit 72865650 authored by Roel Kluin's avatar Roel Kluin Committed by Benjamin Herrenschmidt
Browse files

powerpc/hvsi: Avoid calculating possibly-invalid address 



Check whether index is within bounds prior to calculating a
possibly-invalid address.

Signed-off-by: default avatarRoel Kluin <roel.kluin@gmail.com>
Cc: Bernd Petrovitsch <bernd@firmix.at>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent 6826a57d

drivers/char/hvsi.c

+2 −1
Original line number Diff line number Diff line
@@ -1230,11 +1230,12 @@ static struct tty_driver *hvsi_console_device(struct console *console, 


static int __init hvsi_console_setup(struct console *console, char *options)

{

	struct hvsi_struct *hp = &hvsi_ports[console->index];

	struct hvsi_struct *hp;

	int ret;



	if (console->index < 0 || console->index >= hvsi_count)

		return -1;

	hp = &hvsi_ports[console->index];



	/* give the FSP a chance to change the baud rate when we re-open */

	hvsi_close_protocol(hp);