tree 7c73b315a1af2c9c5da2cad432c09ebb1072eea5
parent 2cdef3b47a404cb913efb192f280673da6f6e227
author Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com> 1558689088 +0530
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1581716008 -0500

serial: uartps: Move the spinlock after the read of the tx empty

commit 107475685abfdee504bb0ef4824f15797f6d2d4d upstream.

Currently we are doing a read of the status register.
Move the spinlock after that as the reads need not be spinlock
protected. This patch prevents relaxing the cpu with spinlock held.

Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Cc: Pavel Machek <pavel@denx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>