From: Bart Van Assche Date: Mon, 16 Oct 2017 15:47:45 +0000 (-0700) Subject: RDMA/uverbs: Make the code in ib_uverbs_cmd_verbs() less confusing X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=69abc735f45538fd3b3740a5293cd16cc09799cf;p=openwrt%2Fstaging%2Fblogic.git RDMA/uverbs: Make the code in ib_uverbs_cmd_verbs() less confusing This patch reduces the number of #ifdefs and also avoids that smatch reports the following: drivers/infiniband/core/uverbs_ioctl.c:276: ib_uverbs_cmd_verbs() warn: if statement not indented drivers/infiniband/core/uverbs_ioctl.c:280: ib_uverbs_cmd_verbs() warn: possible memory leak of 'ctx' drivers/infiniband/core/uverbs_ioctl.c:315: ib_uverbs_cmd_verbs() warn: if statement not indented References: commit fac9658cabb9 ("IB/core: Add new ioctl interface") Signed-off-by: Bart Van Assche Acked-by: Matan Barak Cc: Yishai Hadas Signed-off-by: Doug Ledford --- diff --git a/drivers/infiniband/core/uverbs_ioctl.c b/drivers/infiniband/core/uverbs_ioctl.c index 5286ad57d903..71ff2644e053 100644 --- a/drivers/infiniband/core/uverbs_ioctl.c +++ b/drivers/infiniband/core/uverbs_ioctl.c @@ -241,9 +241,7 @@ static long ib_uverbs_cmd_verbs(struct ib_device *ib_dev, struct uverbs_attr *curr_attr; unsigned long *curr_bitmap; size_t ctx_size; -#ifdef UVERBS_OPTIMIZE_USING_STACK_SZ uintptr_t data[UVERBS_OPTIMIZE_USING_STACK_SZ / sizeof(uintptr_t)]; -#endif if (hdr->reserved) return -EINVAL; @@ -269,13 +267,10 @@ static long ib_uverbs_cmd_verbs(struct ib_device *ib_dev, (method_spec->num_child_attrs / BITS_PER_LONG + method_spec->num_buckets); -#ifdef UVERBS_OPTIMIZE_USING_STACK_SZ if (ctx_size <= UVERBS_OPTIMIZE_USING_STACK_SZ) ctx = (void *)data; - if (!ctx) -#endif - ctx = kmalloc(ctx_size, GFP_KERNEL); + ctx = kmalloc(ctx_size, GFP_KERNEL); if (!ctx) return -ENOMEM; @@ -311,10 +306,8 @@ static long ib_uverbs_cmd_verbs(struct ib_device *ib_dev, err = uverbs_handle_method(buf, ctx->uattrs, hdr->num_attrs, ib_dev, file, method_spec, ctx->uverbs_attr_bundle); out: -#ifdef UVERBS_OPTIMIZE_USING_STACK_SZ - if (ctx_size > UVERBS_OPTIMIZE_USING_STACK_SZ) -#endif - kfree(ctx); + if (ctx != (void *)data) + kfree(ctx); return err; }