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serial: 8250_core: actually limit char reads to max_count
authorFrans Klaver <frans.klaver@xsens.com>
Thu, 6 Nov 2014 20:10:17 +0000 (21:10 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 6 Nov 2014 23:01:03 +0000 (15:01 -0800)
In serial8250_rx_chars(), max_count is set to 256. Due to the
post-decrement operator used in the while() condition, the maximum
number of iterations actually 257. This is not a problem, but it is
mildly surprising if you're debugging. Use pre-decrement instead.

Signed-off-by: Frans Klaver <frans.klaver@xsens.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/tty/serial/8250/8250_core.c patch | blob | history

diff --cc drivers/tty/serial/8250/8250_core.c
Simple merge
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