gpu: nvgpu: clear cmd buffer

Clear command buffer before setting up the command.
Fixes PMU crash on rapid perf events.

Bug 2331655

Change-Id: Ic0661cc8fef4b744f15495ab16ddff85b4d7dec6
Reviewed-on: https://git-master.nvidia.com/r/1811245
Reviewed-by: David Jarrett <djarrett@nvidia.com>
Tested-by: David Jarrett <djarrett@nvidia.com>
Signed-off-by: Vaikundanathan S <vaikuns@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1817581
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/clk/clk.c b/drivers/gpu/nvgpu/clk/clk.c
index 8532a08b..d8e30c45 100644
--- a/drivers/gpu/nvgpu/clk/clk.c
+++ b/drivers/gpu/nvgpu/clk/clk.c
@@ -436,6 +436,7 @@ static u32 clk_pmu_vf_inject(struct gk20a *g, struct set_fll_clk *setfllclk)
         memset(&payload, 0, sizeof(struct pmu_payload));
         memset(&rpccall, 0, sizeof(struct nv_pmu_clk_rpc));
         memset(&handler, 0, sizeof(struct clkrpc_pmucmdhandler_params));
+        memset(&cmd, 0, sizeof(struct pmu_cmd));
 
         if ((setfllclk->gpc2clkmhz == 0) || (setfllclk->xbar2clkmhz == 0) ||
                 (setfllclk->sys2clkmhz == 0) || (setfllclk->voltuv == 0)) {