[Qemu-devel] cadence_uart: shouldn't assume qemu_chr_fe_write() returns non-negative value

[Peter Maydell]

This is something coverity spotted: in cadenc_uart_xmit(), the
code assumes that qemu_chr_fe_write() always returns the number
of bytes written, and subtracts it from the tx_count. However
it can also return a negative value indicating an error.

Could one of you fix this please? Skipping the adjustment of
tx_count and the memmove() if ret is negative should do I think.

thanks
-- PMM