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lm32: milkymist-tmu2: fix integer overflow

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Don't truncate the multiplication and do a 64 bit one instead because
because the result is stored in a 64 bit variable.

Spotted by coverity, CID 1167561.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This commit is contained in:
Michael Walle 2016-10-13 00:35:07 +02:00 committed by Michael Tokarev
parent 19f846b19f
commit 237a8650d6
1 changed files with 1 additions and 1 deletions
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2
hw/display/milkymist-tmu2.c
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@ -213,7 +213,7 @@ static void tmu2_start(MilkymistTMU2State *s)
/* Read the QEMU source framebuffer into an OpenGL texture */
glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_2D, texture);
fb_len = 2*s->regs[R_TEXHRES]*s->regs[R_TEXVRES];
fb_len = 2ULL * s->regs[R_TEXHRES] * s->regs[R_TEXVRES];
fb = cpu_physical_memory_map(s->regs[R_TEXFBUF], &fb_len, 0);
if (fb == NULL) {
glDeleteTextures(1, &texture);