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usb: isp1760: check maxpacketsize before using it
When checking if we need one more packet on a bulk pipe we may, even though not probable at all, get there with a zero maxpacketsize. In that case for sure no packet, no even a one more, will be allocated. This will clean the clang-analyzer warning: drivers/usb/isp1760/isp1760-hcd.c:1856:38: warning: Division by zero [clang-analyzer-core.DivideZero] && !(urb->transfer_buffer_length % Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org> Link: https://lore.kernel.org/r/20210819180929.1327349-3-rui.silva@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -1854,7 +1854,7 @@ static void packetize_urb(struct usb_hcd *hcd,
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packet_type = OUT_PID;
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else
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packet_type = IN_PID;
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} else if (usb_pipebulk(urb->pipe)
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} else if (usb_pipebulk(urb->pipe) && maxpacketsize
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&& (urb->transfer_flags & URB_ZERO_PACKET)
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&& !(urb->transfer_buffer_length %
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maxpacketsize)) {
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