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lm32: milkymist-tmu2: fix a third integer overflow

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

This fixes a similar coverity warning to commits 237a8650d6 and
4382fa6554, in a similar way, and is the final third of the fix for
coverity CID 1167561 (hopefully!).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Michael Walle <michael@walle.cc>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This commit is contained in:
Peter Maydell 2017-02-16 17:26:48 +00:00 committed by Michael Tokarev
parent 79cad2faac
commit 3d74ee7dca
1 changed files with 1 additions and 1 deletions
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2
hw/display/milkymist-tmu2.c
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@ -293,7 +293,7 @@ static void tmu2_start(MilkymistTMU2State *s)
cpu_physical_memory_unmap(mesh, mesh_len, 0, mesh_len);
/* Write back the OpenGL framebuffer to the QEMU framebuffer */
fb_len = 2 * s->regs[R_DSTHRES] * s->regs[R_DSTVRES];
fb_len = 2ULL * s->regs[R_DSTHRES] * s->regs[R_DSTVRES];
fb = cpu_physical_memory_map(s->regs[R_DSTFBUF], &fb_len, 1);
if (fb == NULL) {
glDeleteTextures(1, &texture);