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| author |   Sudip Mukherjee <sudipm.mukherjee@gmail.com> | 2015-10-05 17:22:58 -0700 |
|---|---|---|
| committer |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2015-10-05 17:34:56 -0700 |
| commit | c36906c53ccff0f43310fac9606976440a71c742 (patch) | |
| tree | 7c494078f5660f9b966498476adfafce6b5845f2 /drivers/input/joystick/gamecon.c | |
| parent | Input: db9 - store object at correct index (diff) | |
| download | linux-dev-c36906c53ccff0f43310fac9606976440a71c742.tar.xz linux-dev-c36906c53ccff0f43310fac9606976440a71c742.zip | |
Input: gamecon - store object at correct index
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: a517e87c3dfc ("Input: gamecon - use parallel port device model")
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/joystick/gamecon.c')
| -rw-r--r-- | drivers/input/joystick/gamecon.c | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/drivers/input/joystick/gamecon.c b/drivers/input/joystick/gamecon.c index 394ccbeb957c..5a672dcac0d8 100644 --- a/drivers/input/joystick/gamecon.c +++ b/drivers/input/joystick/gamecon.c @@ -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: |