diff options
| author | YueHaibing <yuehaibing@huawei.com> | 2018-08-03 14:39:11 +0800 |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2018-10-29 22:23:12 +0100 |
| commit | d312a25d477519d5d47f8ce850e80b52cf4113b0 (patch) | |
| tree | 8810685daaa5632f4c8262656e6a06e8f520d08c | |
| parent | 369cca266860db8222c991fced8caa42c3e5b05f (diff) | |
| download | linux-d312a25d477519d5d47f8ce850e80b52cf4113b0.tar.bz2 | |
um: NULL check before kfree is not needed
kfree(NULL) is safe,so this removes NULL check before freeing the mem
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
| -rw-r--r-- | arch/um/drivers/vector_kern.c | 15 | ||||
| -rw-r--r-- | arch/um/drivers/vector_user.c | 6 | ||||
| -rw-r--r-- | arch/um/kernel/irq.c | 3 |
3 files changed, 8 insertions, 16 deletions
diff --git a/arch/um/drivers/vector_kern.c b/arch/um/drivers/vector_kern.c index 50ee3bb5a63a..c84133cf4848 100644 --- a/arch/um/drivers/vector_kern.c +++ b/arch/um/drivers/vector_kern.c @@ -1118,16 +1118,11 @@ static int vector_net_close(struct net_device *dev) os_close_file(vp->fds->tx_fd); vp->fds->tx_fd = -1; } - if (vp->bpf != NULL) - kfree(vp->bpf); - if (vp->fds->remote_addr != NULL) - kfree(vp->fds->remote_addr); - if (vp->transport_data != NULL) - kfree(vp->transport_data); - if (vp->header_rxbuffer != NULL) - kfree(vp->header_rxbuffer); - if (vp->header_txbuffer != NULL) - kfree(vp->header_txbuffer); + kfree(vp->bpf); + kfree(vp->fds->remote_addr); + kfree(vp->transport_data); + kfree(vp->header_rxbuffer); + kfree(vp->header_txbuffer); if (vp->rx_queue != NULL) destroy_queue(vp->rx_queue); if (vp->tx_queue != NULL) diff --git a/arch/um/drivers/vector_user.c b/arch/um/drivers/vector_user.c index 4d6a78e31089..3d8cdbdb4e66 100644 --- a/arch/um/drivers/vector_user.c +++ b/arch/um/drivers/vector_user.c @@ -267,8 +267,7 @@ cleanup: os_close_file(rxfd); if (txfd >= 0) os_close_file(txfd); - if (result != NULL) - kfree(result); + kfree(result); return NULL; } @@ -434,8 +433,7 @@ cleanup: if (fd >= 0) os_close_file(fd); if (result != NULL) { - if (result->remote_addr != NULL) - kfree(result->remote_addr); + kfree(result->remote_addr); kfree(result); } return NULL; diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c index 6b7f3827d6e4..8360fa3f676d 100644 --- a/arch/um/kernel/irq.c +++ b/arch/um/kernel/irq.c @@ -244,8 +244,7 @@ static void garbage_collect_irq_entries(void) to_free = NULL; } walk = walk->next; - if (to_free != NULL) - kfree(to_free); + kfree(to_free); } } |