From bbfe18e3bf7b45543c9f59f7363c1ed5b6bca719 Mon Sep 17 00:00:00 2001 From: Thomas Hellstrom Date: Tue, 12 Oct 2004 18:46:26 +0000 Subject: Via updates. Fixed unlikely but possible uint32_t overflow in ring-buffer code. bumped patchlevel. --- shared-core/via_dma.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) (limited to 'shared-core/via_dma.c') diff --git a/shared-core/via_dma.c b/shared-core/via_dma.c index 182964f6..574858b9 100644 --- a/shared-core/via_dma.c +++ b/shared-core/via_dma.c @@ -80,7 +80,7 @@ via_cmdbuf_wait(drm_via_private_t * dev_priv, unsigned int size) volatile uint32_t *hw_addr_ptr; uint32_t count; hw_addr_ptr = dev_priv->hw_addr_ptr; - cur_addr = agp_base + dev_priv->dma_low; + cur_addr = dev_priv->dma_low; /* At high resolution (i.e. 1280x1024) and with high workload within * a short commmand stream, the following test will fail. It may be * that the engine is too busy to update hw_addr. Therefore, add @@ -89,11 +89,10 @@ via_cmdbuf_wait(drm_via_private_t * dev_priv, unsigned int size) next_addr = cur_addr + size + 64 * 1024; count = 1000000; /* How long is this? */ do { - hw_addr = *hw_addr_ptr; + hw_addr = *hw_addr_ptr - agp_base; if (count-- == 0) { - DRM_ERROR - ("via_cmdbuf_wait timed out hw %x dma_low %x\n", - hw_addr, dev_priv->dma_low); + DRM_ERROR("via_cmdbuf_wait timed out hw %x cur_addr %x next_addr %x\n", + hw_addr, cur_addr, next_addr); return -1; } } while ((cur_addr < hw_addr) && (next_addr >= hw_addr)); -- cgit v1.2.3