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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2016-01-05 11:28:09 +0100 |
|---|---|---|
| committer | Felipe Balbi <balbi@kernel.org> | 2016-03-04 14:14:34 +0100 |
| commit | 413489c8337bf86b7787248484b1e845111809be (patch) | |
| tree | c73701933073e24623d22c9e56df397b11e825e0 /drivers/usb/gadget | |
| parent | usb: gadget: f_midi: use flexible array member for gmidi_in_port elements (diff) | |
| download | linux-413489c8337bf86b7787248484b1e845111809be.tar.xz linux-413489c8337bf86b7787248484b1e845111809be.zip | |
usb: gadget: f_midi: missing unlock on error path
We added a new error path to this function and we forgot to drop the
lock.
Fixes: e1e3d7ec5da3 ('usb: gadget: f_midi: pre-allocate IN requests')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
[mina86@mina86.com: rebased on top of refactoring commit]
Signed-off-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Diffstat (limited to 'drivers/usb/gadget')
| -rw-r--r-- | drivers/usb/gadget/function/f_midi.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/usb/gadget/function/f_midi.c b/drivers/usb/gadget/function/f_midi.c index 8a3c8c45bf0d..0e411bffa4ab 100644 --- a/drivers/usb/gadget/function/f_midi.c +++ b/drivers/usb/gadget/function/f_midi.c @@ -1157,7 +1157,7 @@ static void f_midi_unbind(struct usb_configuration *c, struct usb_function *f) static struct usb_function *f_midi_alloc(struct usb_function_instance *fi) { - struct f_midi *midi; + struct f_midi *midi = NULL; struct f_midi_opts *opts; int status, i; @@ -1166,8 +1166,8 @@ static struct usb_function *f_midi_alloc(struct usb_function_instance *fi) mutex_lock(&opts->lock); /* sanity check */ if (opts->in_ports > MAX_PORTS || opts->out_ports > MAX_PORTS) { - mutex_unlock(&opts->lock); - return ERR_PTR(-EINVAL); + status = -EINVAL; + goto setup_fail; } /* allocate and initialize one new instance */ @@ -1175,8 +1175,8 @@ static struct usb_function *f_midi_alloc(struct usb_function_instance *fi) sizeof(*midi) + opts->in_ports * sizeof(*midi->in_ports_array), GFP_KERNEL); if (!midi) { - mutex_unlock(&opts->lock); - return ERR_PTR(-ENOMEM); + status = -ENOMEM; + goto setup_fail; } for (i = 0; i < opts->in_ports; i++) @@ -1186,7 +1186,6 @@ static struct usb_function *f_midi_alloc(struct usb_function_instance *fi) midi->id = kstrdup(opts->id, GFP_KERNEL); if (opts->id && !midi->id) { status = -ENOMEM; - mutex_unlock(&opts->lock); goto setup_fail; } midi->in_ports = opts->in_ports; @@ -1213,6 +1212,7 @@ static struct usb_function *f_midi_alloc(struct usb_function_instance *fi) return &midi->func; setup_fail: + mutex_unlock(&opts->lock); kfree(midi); return ERR_PTR(status); } |