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usb: gadget: function: Remove redundant usb_free_all_descriptors 

Removed usb_free_all_descriptors in the bind functions, which
results in double-free corruption of the descriptors on error path.
The usb descriptors are allocated by usb_assign_descriptors.

Signed-off-by: Pavitrakumar Managutte <pavitra1729@gmail.com>
Reviewed-by: Robert Baldyga <r.baldyga@samsung.com>
Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Pavitrakumar Managutte 2014-10-22 19:24:58 +05:30 committed by Felipe Balbi
parent 1200a82a59
commit d12a872717
8 changed files with 13 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/usb/gadget/function/f_eem.c
View File

@ -325,7 +325,6 @@ static int eem_bind(struct usb_configuration *c, struct usb_function *f)
return 0;
fail:
usb_free_all_descriptors(f);
if (eem->port.out_ep)
eem->port.out_ep->driver_data = NULL;
if (eem->port.in_ep)

5
drivers/usb/gadget/function/f_hid.c
View File

@ -621,12 +621,14 @@ static int __init hidg_bind(struct usb_configuration *c, struct usb_function *f)
dev = MKDEV(major, hidg->minor);
status = cdev_add(&hidg->cdev, dev, 1);
if (status)
goto fail;
goto fail_free_descs;
device_create(hidg_class, NULL, dev, NULL, "%s%d", "hidg", hidg->minor);
return 0;
fail_free_descs:
usb_free_all_descriptors(f);
fail:
ERROR(f->config->cdev, "hidg_bind FAILED\n");
if (hidg->req != NULL) {
@ -635,7 +637,6 @@ fail:
usb_ep_free_request(hidg->in_ep, hidg->req);
}
usb_free_all_descriptors(f);
return status;
}

1
drivers/usb/gadget/function/f_ncm.c
View File

@ -1461,7 +1461,6 @@ static int ncm_bind(struct usb_configuration *c, struct usb_function *f)
return 0;
fail:
usb_free_all_descriptors(f);
if (ncm->notify_req) {
kfree(ncm->notify_req->buf);
usb_ep_free_request(ncm->notify, ncm->notify_req);

1
drivers/usb/gadget/function/f_obex.c
View File

@ -397,7 +397,6 @@ static int obex_bind(struct usb_configuration *c, struct usb_function *f)
return 0;
fail:
usb_free_all_descriptors(f);
/* we might as well release our claims on endpoints */
if (obex->port.out)
obex->port.out->driver_data = NULL;

2
drivers/usb/gadget/function/f_phonet.c
View File

@ -570,8 +570,8 @@ static int pn_bind(struct usb_configuration *c, struct usb_function *f)
err_req:
for (i = 0; i < phonet_rxq_size && fp->out_reqv[i]; i++)
usb_ep_free_request(fp->out_ep, fp->out_reqv[i]);
err:
usb_free_all_descriptors(f);
err:
if (fp->out_ep)
fp->out_ep->driver_data = NULL;
if (fp->in_ep)

5
drivers/usb/gadget/function/f_rndis.c
View File

@ -803,7 +803,7 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f)
if (rndis->manufacturer && rndis->vendorID &&
rndis_set_param_vendor(rndis->config, rndis->vendorID,
rndis->manufacturer))
goto fail;
goto fail_free_descs;
/* NOTE: all that is done without knowing or caring about
* the network link ... which is unavailable to this code
@ -817,10 +817,11 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f)
rndis->notify->name);
return 0;
fail_free_descs:
usb_free_all_descriptors(f);
fail:
kfree(f->os_desc_table);
f->os_desc_n = 0;
usb_free_all_descriptors(f);
if (rndis->notify_req) {
kfree(rndis->notify_req->buf);

1
drivers/usb/gadget/function/f_subset.c
View File

@ -380,7 +380,6 @@ geth_bind(struct usb_configuration *c, struct usb_function *f)
return 0;
fail:
usb_free_all_descriptors(f);
/* we might as well release our claims on endpoints */
if (geth->port.out_ep)
geth->port.out_ep->driver_data = NULL;

10
drivers/usb/gadget/function/f_uac2.c
View File

@ -1084,7 +1084,7 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn)
prm->rbuf = kzalloc(prm->max_psize * USB_XFERS, GFP_KERNEL);
if (!prm->rbuf) {
prm->max_psize = 0;
goto err;
goto err_free_descs;
}
prm = &agdev->uac2.p_prm;
@ -1092,17 +1092,19 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn)
prm->rbuf = kzalloc(prm->max_psize * USB_XFERS, GFP_KERNEL);
if (!prm->rbuf) {
prm->max_psize = 0;
goto err;
goto err_free_descs;
}
ret = alsa_uac2_init(agdev);
if (ret)
goto err;
goto err_free_descs;
return 0;
err_free_descs:
usb_free_all_descriptors(fn);
err:
kfree(agdev->uac2.p_prm.rbuf);
kfree(agdev->uac2.c_prm.rbuf);
usb_free_all_descriptors(fn);
if (agdev->in_ep)
agdev->in_ep->driver_data = NULL;
if (agdev->out_ep)