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| author | Axel Lin <axel.lin@gmail.com> | 2012-09-19 15:56:23 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2012-09-19 16:00:26 -0700 |
| commit | 35b1da4e1e1026b5195649170dfb9ebb52f808e0 (patch) | |
| tree | fe750def61a997737f1ed5f8d58b6835f05b0dc6 /drivers | |
| parent | 30ebb7fa0e3e92145b859ad6e44aa6dc636b4103 (diff) | |
| download | linux-35b1da4e1e1026b5195649170dfb9ebb52f808e0.tar.bz2 | |
Input: edt-ft5x06 - return -EFAULT on copy_to_user() error
copy_to_user() returns the number of bytes remaining, but we want a
negative error code here.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/input/touchscreen/edt-ft5x06.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c index b06a5e3a665e..64957770b522 100644 --- a/drivers/input/touchscreen/edt-ft5x06.c +++ b/drivers/input/touchscreen/edt-ft5x06.c @@ -566,9 +566,12 @@ static ssize_t edt_ft5x06_debugfs_raw_data_read(struct file *file, } read = min_t(size_t, count, tsdata->raw_bufsize - *off); - error = copy_to_user(buf, tsdata->raw_buffer + *off, read); - if (!error) - *off += read; + if (copy_to_user(buf, tsdata->raw_buffer + *off, read)) { + error = -EFAULT; + goto out; + } + + *off += read; out: mutex_unlock(&tsdata->mutex); return error ?: read; |