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tty: xilinx_uartps: Add timeout waiting for loop
There is a potential infinite loop while waiting for the the TXFULL to deassert. Adds the error message and timeout to avoid infinite loop if it fails to get the TX fifo not full. Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com> Link: https://lore.kernel.org/r/20220729114748.18332-7-shubhrajyoti.datta@xilinx.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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