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return EINVAL if input NULL (e.g. in case of mod devices)

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This commit is contained in:
Ralph Metzler 2017-09-06 17:51:30 +02:00
parent aa2762747f
commit e4acb524a7
1 changed files with 2 additions and 0 deletions
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2
ddbridge/ddbridge-core.c
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@ -857,6 +857,8 @@ static ssize_t ts_read(struct file *file, __user char *buf,
if (!dev->has_dma) if (!dev->has_dma)
return -EINVAL; return -EINVAL;
if (!input)
return -EINVAL;
while (left) { while (left) {
if (ddb_input_avail(input) < 188) { if (ddb_input_avail(input) < 188) {
if (file->f_flags & O_NONBLOCK) if (file->f_flags & O_NONBLOCK)