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Date: Wed, 8 Nov 2017 17:34:14 +0000 From: Alan Cox <gnomes@...rguk.ukuu.org.uk> To: "Ji-Ze Hong (Peter Hong)" <hpeter@...il.com> Cc: gregkh@...uxfoundation.org, jslaby@...e.com, lukas@...ner.de, rel+kernel@...lox.net, linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org, ricardo.ribalda@...il.com, "Ji-Ze Hong (Peter Hong)" <hpeter+linux_kernel@...il.com> Subject: Re: [PATCH V1 1/1] serial: 8250_fintek: Fix crash with baud rate B0 On Wed, 8 Nov 2017 11:05:46 +0800 "Ji-Ze Hong (Peter Hong)" <hpeter@...il.com> wrote: > The 8250_fintek.c is support the Fintek F81866/F81216 with dynamic clock. > But It'll generate "division by zero" exception and crash in > fintek_8250_set_termios() with baud rate 0 on baudrate_table[i] % baud. 0 means "hang up", so this looks good providing it leaves the device in a sane state. Reviewed-by: Alan Cox <alan@...ux.intel.com>
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