Re: [PATCH] drm/nouveau/secboot: remove VLA usage
From: Gustavo A. R. Silva
Date: Tue Mar 13 2018 - 12:18:31 EST
Hi David,
On 03/13/2018 11:10 AM, David Laight wrote:
From: Gustavo A. R. Silva
Sent: 13 March 2018 14:48
In preparation to enabling -Wvla, remove VLA. In this particular
case directly use macro NVKM_MSGQUEUE_CMDLINE_SIZE instead of local
variable cmdline_size. Also, remove cmdline_size as it is not
actually useful anymore.
...
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/ls_ucode_msgqueue.c
b/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/ls_ucode_msgqueue.c
index 6f10b09..2da147b 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/ls_ucode_msgqueue.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/ls_ucode_msgqueue.c
@@ -80,12 +80,12 @@ acr_ls_msgqueue_post_run(struct nvkm_msgqueue *queue,
struct nvkm_falcon *falcon, u32 addr_args)
{
struct nvkm_device *device = falcon->owner->device;
- u32 cmdline_size = NVKM_MSGQUEUE_CMDLINE_SIZE;
- u8 buf[cmdline_size];
+ u8 buf[NVKM_MSGQUEUE_CMDLINE_SIZE];
- memset(buf, 0, cmdline_size);
+ memset(buf, 0, NVKM_MSGQUEUE_CMDLINE_SIZE);
nvkm_msgqueue_write_cmdline(queue, buf);
- nvkm_falcon_load_dmem(falcon, buf, addr_args, cmdline_size, 0);
+ nvkm_falcon_load_dmem(falcon, buf, addr_args,
+ NVKM_MSGQUEUE_CMDLINE_SIZE, 0);
I think I'd use 'sizeof (buf)' in both those lines.
Yeah. I like it.
I'll send v2 with that change shortly.
Thanks
--
Gustavo