korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-15 08:14:15 +08:00
Code Issues Packages Projects Releases Wiki Activity

Input: gamecon - store object at correct index

Browse Source 
The variable i is used to check the port to attach to and we are
supposed to save the reference of struct gc in the location given by
gc_base[i]. But after finding out the index, i is getting modified again
so we saved in a wrong index.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: a517e87c3d ("Input: gamecon - use parallel port device model")
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Sudip Mukherjee 2015-10-05 17:22:58 -07:00 committed by Dmitry Torokhov
parent dd23bf1044
commit c36906c53c
1 changed files with 10 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
drivers/input/joystick/gamecon.c
View File

@ -931,29 +931,30 @@ static void gc_attach(struct parport *pp)
{
struct gc *gc;
struct pardevice *pd;
int i;
int i, port_idx;
int count = 0;
int *pads, n_pads;
struct pardev_cb gc_parport_cb;
for (i = 0; i < GC_MAX_PORTS; i++) {
if (gc_cfg[i].nargs == 0 || gc_cfg[i].args[0] < 0)
for (port_idx = 0; port_idx < GC_MAX_PORTS; port_idx++) {
if (gc_cfg[port_idx].nargs == 0 || gc_cfg[port_idx].args[0] < 0)
continue;
if (gc_cfg[i].args[0] == pp->number)
if (gc_cfg[port_idx].args[0] == pp->number)
break;
}
if (i == GC_MAX_PORTS) {
if (port_idx == GC_MAX_PORTS) {
pr_debug("Not using parport%d.\n", pp->number);
return;
}
pads = gc_cfg[i].args + 1;
n_pads = gc_cfg[i].nargs - 1;
pads = gc_cfg[port_idx].args + 1;
n_pads = gc_cfg[port_idx].nargs - 1;
gc_parport_cb.flags = PARPORT_FLAG_EXCL;
pd = parport_register_dev_model(pp, "gamecon", &gc_parport_cb, i);
pd = parport_register_dev_model(pp, "gamecon", &gc_parport_cb,
port_idx);
if (!pd) {
pr_err("parport busy already - lp.o loaded?\n");
return;
@ -985,7 +986,7 @@ static void gc_attach(struct parport *pp)
goto err_free_gc;
}
gc_base[i] = gc;
gc_base[port_idx] = gc;
return;
err_unreg_devs: