From c65cf815653ec64e73d40819806c2d1aed91681e Mon Sep 17 00:00:00 2001 From: Sudip Mukherjee Date: Mon, 5 Oct 2015 17:23:08 -0700 Subject: [PATCH] Input: turbografx - store object in correct index The variable i is used to check the port to attach to and we are supposed to save the reference of struct tgfx in the location given by tgfx_base[i]. But after finding out the index, i is getting modified again so we saved in a wrong index. Fixes: 4de27a638a99 ("Input: turbografx - use parallel port device model") Signed-off-by: Sudip Mukherjee Signed-off-by: Dmitry Torokhov --- drivers/input/joystick/turbografx.c | 20 +++++++++++--------- 1 file changed, 11 insertions(+), 9 deletions(-) diff --git a/drivers/input/joystick/turbografx.c b/drivers/input/joystick/turbografx.c index 01e8ea92b9ad..9f5bca26bd2f 100644 --- a/drivers/input/joystick/turbografx.c +++ b/drivers/input/joystick/turbografx.c @@ -162,27 +162,29 @@ static void tgfx_attach(struct parport *pp) struct tgfx *tgfx; struct input_dev *input_dev; struct pardevice *pd; - int i, j; + int i, j, port_idx; int *n_buttons, n_devs; struct pardev_cb tgfx_parport_cb; - for (i = 0; i < TGFX_MAX_PORTS; i++) { - if (tgfx_cfg[i].nargs == 0 || tgfx_cfg[i].args[0] < 0) + for (port_idx = 0; port_idx < TGFX_MAX_PORTS; port_idx++) { + if (tgfx_cfg[port_idx].nargs == 0 || + tgfx_cfg[port_idx].args[0] < 0) continue; - if (tgfx_cfg[i].args[0] == pp->number) + if (tgfx_cfg[port_idx].args[0] == pp->number) break; } - if (i == TGFX_MAX_PORTS) { + if (port_idx == TGFX_MAX_PORTS) { pr_debug("Not using parport%d.\n", pp->number); return; } - n_buttons = tgfx_cfg[i].args + 1; - n_devs = tgfx_cfg[i].nargs - 1; + n_buttons = tgfx_cfg[port_idx].args + 1; + n_devs = tgfx_cfg[port_idx].nargs - 1; tgfx_parport_cb.flags = PARPORT_FLAG_EXCL; - pd = parport_register_dev_model(pp, "turbografx", &tgfx_parport_cb, i); + pd = parport_register_dev_model(pp, "turbografx", &tgfx_parport_cb, + port_idx); if (!pd) { pr_err("parport busy already - lp.o loaded?\n"); return; @@ -250,7 +252,7 @@ static void tgfx_attach(struct parport *pp) goto err_free_tgfx; } - tgfx_base[i] = tgfx; + tgfx_base[port_idx] = tgfx; return; err_free_dev: -- 2.20.1