diff options
| author | Dan Willemsen <dwillemsen@nvidia.com> | 2011-07-14 13:13:53 -0700 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2011-11-30 21:52:16 -0800 |
| commit | 457ab9cb9c036f9e62a00f7582de09b10e7d114c (patch) | |
| tree | 96c918bb3d5c9b52e89a23ff30972d1f75ffbcb8 /drivers/video/tegra | |
| parent | 8478c748aec2f4e409ef49dabaa33a84450eafd2 (diff) | |
HACK: handle DC IRQ when off gracefully
Change-Id: I613ad237bda9845c928b27b96db227e484b95f7d
Reviewed-on: http://git-master/r/41077
Tested-by: Daniel Willemsen <dwillemsen@nvidia.com>
Reviewed-by: Scott Williams <scwilliams@nvidia.com>
Reviewed-by: Daniel Willemsen <dwillemsen@nvidia.com>
Rebase-Id: Rbc20d94729500157b45207bac4ab0d4340297af2
Diffstat (limited to 'drivers/video/tegra')
| -rw-r--r-- | drivers/video/tegra/dc/dc.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/video/tegra/dc/dc.c b/drivers/video/tegra/dc/dc.c index c7f448e3f3e3..9b3f3a3014cd 100644 --- a/drivers/video/tegra/dc/dc.c +++ b/drivers/video/tegra/dc/dc.c @@ -2110,6 +2110,15 @@ static irqreturn_t tegra_dc_irq(int irq, void *ptr) unsigned long val; unsigned long underflow_mask; + if (!nvhost_module_powered(&dc->ndev->host->mod)) { + WARN(1, "IRQ when DC not powered!\n"); + tegra_dc_io_start(dc); + status = tegra_dc_readl(dc, DC_CMD_INT_STATUS); + tegra_dc_writel(dc, status, DC_CMD_INT_STATUS); + tegra_dc_io_end(dc); + return IRQ_HANDLED; + } + status = tegra_dc_readl(dc, DC_CMD_INT_STATUS); tegra_dc_writel(dc, status, DC_CMD_INT_STATUS); |