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由 Jeremy Kerr 提交于
Currently, we export serial8250_rx_chars, which does a whole bunch of reads from the 8250 data register, without any form of flow control between reads. An upcoming change to the aspeed vuart driver implements more fine-grained flow control in the interrupt handler, requiring character-at-a-time control over the rx path. This change exports serial8250_read_char to allow this. Signed-off-by: NJeremy Kerr <jk@ozlabs.org> Tested-by: NEddie James <eajames@linux.vnet.ibm.com> Tested-by: NJoel Stanley <joel@jms.id.au> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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