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Arithmetic error in EDID generation fixed

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To calculate screen size in centimeters we should calculate:
pixels/dpi*2.54
but not
pixels*dpi/2540

Using wrong formula we actually get 65 DPI and very small fonts.

Signed-off-by: Anton V. Boyarshinov <boyarsh@altlinux.org>
Message-id: 20200226122054.366b9cda@table.localdomain
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Anton V. Boyarshinov 2020-02-26 15:20:54 +03:00 committed by Gerd Hoffmann
parent e0175b7163
commit cd8fef8d4b
1 changed files with 2 additions and 2 deletions
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4
hw/display/edid-generate.c
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@ -360,8 +360,8 @@ void qemu_edid_generate(uint8_t *edid, size_t size,
edid[20] = 0xa5;
/* screen size: undefined */
edid[21] = info->prefx * info->dpi / 2540;
edid[22] = info->prefy * info->dpi / 2540;
edid[21] = info->prefx * 254 / 100 / info->dpi;
edid[22] = info->prefy * 254 / 100 / info->dpi;
/* display gamma: 2.2 */
edid[23] = 220 - 100;