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gpio: make the iterator point to last handle

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When initializing the GPIO handles, we use the iterator (i)
to back off if something goes wrong. But since the iterator
is also used after we pass the loop, we must decrement by
one after exiting the loop so that we point at the last
element in the array.

Reported-by: Dan Carpenter <[email protected]>
Cc: Dan Carpenter <[email protected]>
Cc: Walter Harms <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
This commit is contained in:
Linus Walleij 2016-06-18 10:56:43 +02:00
commit e2f608be64
1 changed files with 2 additions and 0 deletions
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2
drivers/gpio/gpiolib.c
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@ -474,6 +474,8 @@ static int linehandle_create(struct gpio_device *gdev, void __user *ip)
dev_dbg(&gdev->dev, "registered chardev handle for line %d\n",
offset);
}
/* Let i point at the last handle */
i--;
lh->numdescs = handlereq.lines;
fd = anon_inode_getfd("gpio-linehandle",