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The relevant history introducing serial_lsr_in() looks as follows:
$ git log --graph --oneline --boundary 9fafe733514b..df36f3e3fbb7 -- drivers/tty/serial/8250/8250_port.c
* df36f3e3fbb7 Merge tag 'v5.19-rc3' into tty-next
|\
| * be03b0651ffd serial: 8250: Store to lsr_save_flags after lsr read
* | ...
* | bdb70c424df1 serial: 8250: Create serial_lsr_in()
* | ce338e4477cf serial: 8250: Store to lsr_save_flags after lsr read
* | ...
|/
o 9fafe733514b tty: remove CMSPAR ifdefs
So the patch "serial: 8250: Store to lsr_save_flags after lsr read" was
introduced twice and in one branch it was followed up by commit
bdb70c424df1 ("serial: 8250: Create serial_lsr_in()") which moved
explicit lsr_saved_flags handling into a new function serial_lsr_in().
When the two branches were merged in commit df36f3e3fbb7, we got both,
serial_lsr_in() and the explicit lsr_saved_flags handling.
So drop the explicit lsr_saved_flags handling.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20230202104501.264686-1-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
fbe7e38f3e