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author | Michael Kelley <mhklinux@outlook.com> | 2024-02-01 09:00:22 +0300 |
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committer | Wei Liu <wei.liu@kernel.org> | 2024-03-01 11:19:11 +0300 |
commit | 20ee2ae8c58990ca9e98954b7ac2b66c53a0310e (patch) | |
tree | e9de40d563396e450ac993bcecc3a439f788d6b4 /drivers/hv | |
parent | b8209544296edbd1af186e2ea9c648642c37b18c (diff) | |
download | linux-20ee2ae8c58990ca9e98954b7ac2b66c53a0310e.tar.xz |
fbdev/hyperv_fb: Fix logic error for Gen2 VMs in hvfb_getmem()
A recent commit removing the use of screen_info introduced a logic
error. The error causes hvfb_getmem() to always return -ENOMEM
for Generation 2 VMs. As a result, the Hyper-V frame buffer
device fails to initialize. The error was introduced by removing
an "else if" clause, leaving Gen2 VMs to always take the -ENOMEM
error path.
Fix the problem by removing the error path "else" clause. Gen 2
VMs now always proceed through the MMIO memory allocation code,
but with "base" and "size" defaulting to 0.
Fixes: 0aa0838c84da ("fbdev/hyperv_fb: Remove firmware framebuffers with aperture helpers")
Signed-off-by: Michael Kelley <mhklinux@outlook.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Link: https://lore.kernel.org/r/20240201060022.233666-1-mhklinux@outlook.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Message-ID: <20240201060022.233666-1-mhklinux@outlook.com>
Diffstat (limited to 'drivers/hv')
0 files changed, 0 insertions, 0 deletions