On embedded systems without a BIOS, the DRAM sizing register is 0 after the boot, and the driver thinks we have only 1 MB video memory. On such cases, use the PCI window size for the initial size. This information is needed only to create the I/O mapping - the driver will later detect and configure the memory size correctly. Limit the size to 16 MB as it should be sufficient for all supported video modes.
Signed-off-by: Aaro Koskinen <[email protected]> --- drivers/staging/xgifb/XGI_main_26.c | 9 +++++---- 1 files changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/staging/xgifb/XGI_main_26.c b/drivers/staging/xgifb/XGI_main_26.c index 98b8b09..f780bcf 100644 --- a/drivers/staging/xgifb/XGI_main_26.c +++ b/drivers/staging/xgifb/XGI_main_26.c @@ -1470,6 +1470,9 @@ static int XGIfb_get_dram_size(struct xgifb_video_info *xgifb_info) xgifb_reg_set(XGISR, IND_SIS_DRAM_SIZE, 0x51); reg = xgifb_reg_get(XGISR, IND_SIS_DRAM_SIZE); + if (!reg) + return -1; + switch ((reg & XGI_DRAM_SIZE_MASK) >> 4) { case XGI_DRAM_SIZE_1MB: xgifb_info->video_size = 0x100000; @@ -1778,10 +1781,8 @@ static int __devinit xgifb_probe(struct pci_dev *pdev, hw_info->jChipType = xgifb_info->chip; if (XGIfb_get_dram_size(xgifb_info)) { - dev_err(&pdev->dev, - "Fatal error: Unable to determine RAM size.\n"); - ret = -ENODEV; - goto error_disable; + xgifb_info->video_size = min_t(unsigned long, video_size_max, + SZ_16M); } else if (xgifb_info->video_size > video_size_max) { xgifb_info->video_size = video_size_max; } -- 1.7.2.5 _______________________________________________ devel mailing list [email protected] http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
