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Revert "serial_core: Update buffer overrun statistics."
This reverts commit 642180871b
.
Buffer overruns are for hardware reported overruns, not software ones,
which will only happen if we run out of memory and you will get lots of
-ENOMEM errors at the same time.
Thanks to Alan Cox for catching this.
Reported-by: Alan Cox <alan@linux.intel.com>
Cc: Corbin Atkinson <corbinat@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
bdb595b4a9
commit
55e4b8b416
1 changed files with 2 additions and 4 deletions
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@ -2527,16 +2527,14 @@ void uart_insert_char(struct uart_port *port, unsigned int status,
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struct tty_struct *tty = port->state->port.tty;
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if ((status & port->ignore_status_mask & ~overrun) == 0)
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if (tty_insert_flip_char(tty, ch, flag) == 0)
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++port->icount.buf_overrun;
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tty_insert_flip_char(tty, ch, flag);
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/*
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* Overrun is special. Since it's reported immediately,
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* it doesn't affect the current character.
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*/
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if (status & ~port->ignore_status_mask & overrun)
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if (tty_insert_flip_char(tty, 0, TTY_OVERRUN) == 0)
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++port->icount.buf_overrun;
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tty_insert_flip_char(tty, 0, TTY_OVERRUN);
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}
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EXPORT_SYMBOL_GPL(uart_insert_char);
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