From: Peter Senna Tschudin <peter.senna@xxxxxxxxx> Remove useless kfree() and clean up code related to the removal. The semantic patch that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r exists@ position p1,p2; expression x; @@ if (x@p1 == NULL) { ... kfree@p2(x); ... return ...; } @unchanged exists@ position r.p1,r.p2; expression e <= r.x,x,e1; iterator I; statement S; @@ if (x@p1 == NULL) { ... when != I(x,...) S when != e = e1 when != e += e1 when != e -= e1 when != ++e when != --e when != e++ when != e-- when != &e kfree@p2(x); ... return ...; } @ok depends on unchanged exists@ position any r.p1; position r.p2; expression x; @@ ... when != true x@p1 == NULL kfree@p2(x); @depends on !ok && unchanged@ position r.p2; expression x; @@ *kfree@p2(x); // </smpl> Signed-off-by: Peter Senna Tschudin <peter.senna@xxxxxxxxx> --- drivers/staging/gdm72xx/gdm_sdio.c | 13 ++++--------- 1 file changed, 4 insertions(+), 9 deletions(-) diff --git a/drivers/staging/gdm72xx/gdm_sdio.c b/drivers/staging/gdm72xx/gdm_sdio.c index f824290..2e1a964 100644 --- a/drivers/staging/gdm72xx/gdm_sdio.c +++ b/drivers/staging/gdm72xx/gdm_sdio.c @@ -91,20 +91,15 @@ static void free_tx_struct(struct sdio_tx *t) static struct sdio_rx *alloc_rx_struct(struct rx_cxt *rx) { - struct sdio_rx *r = NULL; - - r = kmalloc(sizeof(*r), GFP_ATOMIC); - if (r == NULL) - goto out; + struct sdio_rx *r; - memset(r, 0, sizeof(*r)); + r = kzalloc(sizeof(*r), GFP_ATOMIC); + if (!r) + return NULL; r->rx_cxt = rx; return r; -out: - kfree(r); - return NULL; } static void free_rx_struct(struct sdio_rx *r) _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
