From: Roel Kluin <roel.kl...@gmail.com>
Check whether index is within bounds prior to calculating a
possibly-invalid address.
Signed-off-by: Roel Kluin <roel.kl...@gmail.com>
Cc: Bernd Petrovitsch <be...@firmix.at>
Cc: Benjamin Herrenschmidt <b...@kernel.crashing.org>
Signed-off-by: Andrew Morton <a...@linux-foundation.org>
---
drivers/char/hvsi.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff -puN
drivers/char/hvsi.c~powerpc-avoid-calculating-possibly-invalid-address
drivers/char/hvsi.c
--- a/drivers/char/hvsi.c~powerpc-avoid-calculating-possibly-invalid-address
+++ a/drivers/char/hvsi.c
@@ -1230,11 +1230,12 @@ static struct tty_driver *hvsi_console_d
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);
_
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