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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/sc1200.c | |
| parent | Null pointer deref with hrtimer_try_to_cancel() (diff) | |
| download | linux-9ecab6e5bf87f96dc2fa89cc9e8d5576fbde4325.tar.xz linux-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 '')
| -rw-r--r-- | drivers/ide/sc1200.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/ide/sc1200.c b/drivers/ide/sc1200.c index f1a8758e3a99..ec7f766ef5e4 100644 --- a/drivers/ide/sc1200.c +++ b/drivers/ide/sc1200.c @@ -104,11 +104,12 @@ static u8 sc1200_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) && |