Re: [PATCH RFC] video: Add Hyper-V Synthetic Video Frame Buffer Driver
From: Olaf Hering <hidden>
Date: 2013-02-19 16:51:24
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On Fri, Feb 15, Haiyang Zhang wrote:
quoted hunk ↗ jump to hunk
@@ -508,6 +544,18 @@ static int __init vesafb_init(void) int ret; char *option = NULL; +#if IS_ENABLED(CONFIG_HYPERV_FB) + /* + * On Hyper-V both the emulated and synthetic video devices are + * available. To avoid conflicts, we disable vesafb for the emulated + * video if hyperv_fb is configured. + */ + if (is_hyperv()) { + pr_info("Disabled vesafb on Hyper-V.\n"); + return -ENODEV; + } +#endif
What is the reason for this hook? Is it not possible to claim the display like its appearently done by other drivers (like radeonfb can take over display from vesafb)? Olaf