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USB: serial: mos7840: drop buffer-callback return-value comments
The driver write_room and chars_in_buffer callbacks used to incorrectly return a negative errno in case they were called with a NULL port driver-data pointer or if some other always-true sanity checks failed. The bogus sanity checks were later removed by commitce039bd4b2
("USB: serial: mos7840: drop paranoid port checks") and7b2faede67
("USB: serial: mos7840: drop port driver data accessors") but the function-header comments were never updated to match. Drop the outdated return-value comments. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
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1 changed files with 0 additions and 5 deletions
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@ -730,9 +730,6 @@ static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port)
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* this function is called by the tty driver when it wants to know how many
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* this function is called by the tty driver when it wants to know how many
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* bytes of data we currently have outstanding in the port (data that has
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* bytes of data we currently have outstanding in the port (data that has
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* been written, but hasn't made it out the port yet)
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* been written, but hasn't made it out the port yet)
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* If successful, we return the number of bytes left to be written in the
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* system,
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* Otherwise we return zero.
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*****************************************************************************/
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*****************************************************************************/
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static unsigned int mos7840_chars_in_buffer(struct tty_struct *tty)
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static unsigned int mos7840_chars_in_buffer(struct tty_struct *tty)
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@ -814,8 +811,6 @@ static void mos7840_break(struct tty_struct *tty, int break_state)
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* mos7840_write_room
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* mos7840_write_room
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* this function is called by the tty driver when it wants to know how many
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* this function is called by the tty driver when it wants to know how many
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* bytes of data we can accept for a specific port.
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* bytes of data we can accept for a specific port.
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* If successful, we return the amount of room that we have for this port
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* Otherwise we return a negative error number.
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*****************************************************************************/
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*****************************************************************************/
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static unsigned int mos7840_write_room(struct tty_struct *tty)
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static unsigned int mos7840_write_room(struct tty_struct *tty)
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