Messages in this thread Patch in this message | | | Date | Sun, 30 Aug 2009 11:18:13 +0200 (CEST) | From | Julia Lawall <> | Subject | [PATCH] drivers/input/keyboard: Move a dereference below a NULL test |
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From: Julia Lawall <julia@diku.dk>
If the NULL test is necessary, then the dereference should be moved below the NULL test.
The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/).
// <smpl> @@ type T; expression E; identifier i,fld; statement S; @@
- T i = E->fld; + T i; ... when != E when != i if (E == NULL) S + i = E->fld; // </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
--- drivers/input/keyboard/w90p910_keypad.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff -u -p a/drivers/input/keyboard/w90p910_keypad.c b/drivers/input/keyboard/w90p910_keypad.c --- a/drivers/input/keyboard/w90p910_keypad.c +++ b/drivers/input/keyboard/w90p910_keypad.c @@ -120,7 +120,7 @@ static int __devinit w90p910_keypad_prob { const struct w90p910_keypad_platform_data *pdata = pdev->dev.platform_data; - const struct matrix_keymap_data *keymap_data = pdata->keymap_data; + const struct matrix_keymap_data *keymap_data; struct w90p910_keypad *keypad; struct input_dev *input_dev; struct resource *res; @@ -132,6 +132,7 @@ static int __devinit w90p910_keypad_prob dev_err(&pdev->dev, "no platform data defined\n"); return -EINVAL; } + keymap_data = pdata->keymap_data; irq = platform_get_irq(pdev, 0); if (irq < 0) {
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