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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2008-05-30 10:40:28 -0400 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2008-05-30 10:40:28 -0400 |
| commit | 501a5250589be41c4c060afa855bc60b4539a340 (patch) | |
| tree | a2411e9367fd265f1327c51bdef6d3c8f793d0b0 /drivers/input/tablet | |
| parent | 471637a575329f9250e7e4099e84084820a35e11 (diff) | |
| download | linux-501a5250589be41c4c060afa855bc60b4539a340.tar.gz linux-501a5250589be41c4c060afa855bc60b4539a340.tar.bz2 linux-501a5250589be41c4c060afa855bc60b4539a340.zip | |
Input: gtco - fix double kfree in error handling path
The code would try to free 'report' twice upon input_register_device()
failure.
Reported-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers/input/tablet')
| -rw-r--r-- | drivers/input/tablet/gtco.c | 17 |
1 files changed, 7 insertions, 10 deletions
diff --git a/drivers/input/tablet/gtco.c b/drivers/input/tablet/gtco.c index c5a8661a1baa..1e748e46d12e 100644 --- a/drivers/input/tablet/gtco.c +++ b/drivers/input/tablet/gtco.c @@ -830,7 +830,7 @@ static int gtco_probe(struct usb_interface *usbinterface, struct gtco *gtco; struct input_dev *input_dev; struct hid_descriptor *hid_desc; - char *report = NULL; + char *report; int result = 0, retry; int error; struct usb_endpoint_descriptor *endpoint; @@ -916,12 +916,16 @@ static int gtco_probe(struct usb_interface *usbinterface, le16_to_cpu(hid_desc->wDescriptorLength), 5000); /* 5 secs */ - if (result == le16_to_cpu(hid_desc->wDescriptorLength)) + dbg("usb_control_msg result: %d", result); + if (result == le16_to_cpu(hid_desc->wDescriptorLength)) { + parse_hid_report_descriptor(gtco, report, result); break; + } } + kfree(report); + /* If we didn't get the report, fail */ - dbg("usb_control_msg result: :%d", result); if (result != le16_to_cpu(hid_desc->wDescriptorLength)) { err("Failed to get HID Report Descriptor of size: %d", hid_desc->wDescriptorLength); @@ -929,12 +933,6 @@ static int gtco_probe(struct usb_interface *usbinterface, goto err_free_urb; } - /* Now we parse the report */ - parse_hid_report_descriptor(gtco, report, result); - - /* Now we delete it */ - kfree(report); - /* Create a device file node */ usb_make_path(gtco->usbdev, gtco->usbpath, sizeof(gtco->usbpath)); strlcat(gtco->usbpath, "/input0", sizeof(gtco->usbpath)); @@ -988,7 +986,6 @@ static int gtco_probe(struct usb_interface *usbinterface, usb_buffer_free(gtco->usbdev, REPORT_MAX_SIZE, gtco->buffer, gtco->buf_dma); err_free_devs: - kfree(report); input_free_device(input_dev); kfree(gtco); return error; |