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gpu: nvgpu: linux: check whether hal initialized for gr_default_attrib_cb_size

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On access debugfs node gr_default_attrib_cb_size, the hal might not have
been initialized.

Bug 2848790

Signed-off-by: Richard Zhao <rizhao@nvidia.com>
Change-Id: I0a70f1377d2001802092a8eccec5ec144a58c79b
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2349299
Reviewed-by: automaticguardword <automaticguardword@nvidia.com>
Reviewed-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit
This commit is contained in:
Richard Zhao
2020-05-22 18:47:06 -07:00
committed by Alex Waterman
parent 6d922dd9b7
commit 8d68e687f0
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/nvgpu/os/linux/debug_gr.c
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@@ -28,6 +28,10 @@ static int gr_default_attrib_cb_size_show(struct seq_file *s, void *data)
{
struct gk20a *g = s->private;
/* HAL might not be initialized yet */
if (g->ops.gr.init.get_attrib_cb_default_size == NULL)
return -EFAULT;
seq_printf(s, "%u\n", g->ops.gr.init.get_attrib_cb_default_size(g));
return 0;