From: Peter Hurley <peter@hurleysoftware.com>
Date: Thu, 6 Nov 2014 14:06:12 +0000 (-0500)
Subject: serial: pl011: Fix build breakage with !CONFIG_DMA_ENGINE
X-Git-Tag: omap-for-v3.19/fixes-rc1~86^2~109
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=36f339d136f3b6e91235be619a88289a5f980450;p=pandora-kernel.git

serial: pl011: Fix build breakage with !CONFIG_DMA_ENGINE

Commit 479e9b94fdce7bc4 ("serial: Refactor uart_flush_buffer() from
uart_close") refactored the uart_flush_buffer() in uart_close() into
those drivers that define a flush_buffer() method. However, in the
amba-pl011 driver configured without CONFIG_DMA_ENGINE, flush_buffer()
is a NULL method, so the direct call fails to compile.

Check and call the flush_buffer() method through the ops table instead.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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