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| author |   Julia Lawall <julia@diku.dk> | 2008-12-22 23:05:06 +0100 |
|---|---|---|
| committer |   Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-12-22 23:05:06 +0100 |
| commit | 9ecab6e5bf87f96dc2fa89cc9e8d5576fbde4325 (patch) | |
| tree | bcf788b943c0050b06a30f69a940ae31fd69c6bf /drivers/ide/cs5530.c | |
| parent | Null pointer deref with hrtimer_try_to_cancel() (diff) | |
| download | linux-dev-9ecab6e5bf87f96dc2fa89cc9e8d5576fbde4325.tar.xz linux-dev-9ecab6e5bf87f96dc2fa89cc9e8d5576fbde4325.zip | |
drivers/ide/{cs5530.c,sc1200.c}: Move a dereference below a NULL test
In each case, 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://www.emn.fr/x-info/coccinelle/)
// <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>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/cs5530.c')
| -rw-r--r-- | drivers/ide/cs5530.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/ide/cs5530.c b/drivers/ide/cs5530.c index 53f079cc00af..d8ede85fe17f 100644 --- a/drivers/ide/cs5530.c +++ b/drivers/ide/cs5530.c @@ -81,11 +81,12 @@ static u8 cs5530_udma_filter(ide_drive_t *drive) { ide_hwif_t *hwif = drive->hwif; ide_drive_t *mate = ide_get_pair_dev(drive); - u16 *mateid = mate->id; + u16 *mateid; u8 mask = hwif->ultra_mask; if (mate == NULL) goto out; + mateid = mate->id; if (ata_id_has_dma(mateid) && __ide_dma_bad_drive(mate) == 0) { if ((mateid[ATA_ID_FIELD_VALID] & 4) && |