diff options
| author | Peter Zu <pzu@nvidia.com> | 2011-04-06 21:42:33 -0700 |
|---|---|---|
| committer | Erik Gilling <konkers@android.com> | 2011-04-19 13:05:57 -0700 |
| commit | 780073d7c4c001f78a5b3cd2d464ddd2f15c44e0 (patch) | |
| tree | b48bcb003f490b648ac42128703bab23eacb5b81 /drivers | |
| parent | 9da0efab32e17025d50abc2913fa878358303b57 (diff) | |
video: tegra: dc: hdcp: handle the case of DEVICE_COUNT = 0 properly
When HDCP repeater has no device attached, DEVICE_COUNT reports back as 0.
HDCP driver should handle this case as a good case and continue downstream
authentication, other than fail it.
Change-Id: Ied2e46428c0247f14fbd96016cd4fdbf358f6587
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/video/tegra/dc/nvhdcp.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/video/tegra/dc/nvhdcp.c b/drivers/video/tegra/dc/nvhdcp.c index 7c8869a563f5..5c2d9050a14b 100644 --- a/drivers/video/tegra/dc/nvhdcp.c +++ b/drivers/video/tegra/dc/nvhdcp.c @@ -354,6 +354,9 @@ static int get_ksvfifo(struct tegra_nvhdcp *nvhdcp, if (!ksv_list || num_bksv_list > TEGRA_NVHDCP_MAX_DEVS) return -EINVAL; + if (num_bksv_list == 0) + return 0; + buf = kmalloc(buf_len, GFP_KERNEL); if (IS_ERR_OR_NULL(buf)) return -ENOMEM; |