From: Ben Skeggs Date: Wed, 2 Jun 2010 00:16:24 +0000 (+1000) Subject: drm/nouveau: completely fail init if we fail to map the PRAMIN BAR X-Git-Tag: cont_sys_log_2~10^2~5 X-Git-Url: http://ftp.safe.ca/?p=safe%2Fjmp%2Flinux-2.6;a=commitdiff_plain;h=6d696305530c0b3fcd7d15ad87d7203cb53df5b7 drm/nouveau: completely fail init if we fail to map the PRAMIN BAR On cards where there's a specific BAR for PRAMIN, we used to try and fall back to the "legacy" aperture within the mmio BAR. This is doomed to cause problems, so lets just fail completely as there's obviously something else very wrong anyway. Signed-off-by: Ben Skeggs Signed-off-by: Dave Airlie --- diff --git a/drivers/gpu/drm/nouveau/nouveau_state.c b/drivers/gpu/drm/nouveau/nouveau_state.c index 147e59c..b02a231 100644 --- a/drivers/gpu/drm/nouveau/nouveau_state.c +++ b/drivers/gpu/drm/nouveau/nouveau_state.c @@ -779,29 +779,24 @@ int nouveau_load(struct drm_device *dev, unsigned long flags) return ret; } - /* map larger RAMIN aperture on NV40 cards */ - dev_priv->ramin = NULL; + /* Map PRAMIN BAR, or on older cards, the aperture withing BAR0 */ if (dev_priv->card_type >= NV_40) { int ramin_bar = 2; if (pci_resource_len(dev->pdev, ramin_bar) == 0) ramin_bar = 3; dev_priv->ramin_size = pci_resource_len(dev->pdev, ramin_bar); - dev_priv->ramin = ioremap( - pci_resource_start(dev->pdev, ramin_bar), + dev_priv->ramin = + ioremap(pci_resource_start(dev->pdev, ramin_bar), dev_priv->ramin_size); if (!dev_priv->ramin) { - NV_ERROR(dev, "Failed to init RAMIN mapping, " - "limited instance memory available\n"); + NV_ERROR(dev, "Failed to PRAMIN BAR"); + return -ENOMEM; } - } - - /* On older cards (or if the above failed), create a map covering - * the BAR0 PRAMIN aperture */ - if (!dev_priv->ramin) { + } else { dev_priv->ramin_size = 1 * 1024 * 1024; dev_priv->ramin = ioremap(mmio_start_offs + NV_RAMIN, - dev_priv->ramin_size); + dev_priv->ramin_size); if (!dev_priv->ramin) { NV_ERROR(dev, "Failed to map BAR0 PRAMIN.\n"); return -ENOMEM;