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serial: sandbox: use ssize_t to match os_read
Signed-off-by: Mike Frysinger <vapier@gentoo.org> Acked-by: Simon Glass <sjg@chromium.org>
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@ -50,7 +50,7 @@ void serial_puts(const char *str)
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int serial_getc(void)
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int serial_getc(void)
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{
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{
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char buf;
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char buf;
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int count;
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ssize_t count;
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count = os_read(0, &buf, 1);
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count = os_read(0, &buf, 1);
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return count == 1 ? buf : 0;
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return count == 1 ? buf : 0;
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