From: Han Xu <b45815@freescale.com>
Date: Wed, 13 May 2015 19:40:57 +0000 (-0500)
Subject: mtd: fsl-quadspi: Access multiple chips simultaneously
X-Git-Tag: omap-for-v4.3/fixes-rc1~116^2~43
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=392d39cfcaa9bcfa202fb0fd3bc65f3c20de318f;p=pandora-kernel.git

mtd: fsl-quadspi: Access multiple chips simultaneously

Add supports for simultaneous access to multiple chips. Need to lock
the mutex before any quad spi operations and unlock the mutex after
operations complete.

Signed-off-by: Han Xu <b45815@freescale.com>
[Brian: reworked err path in fsl_qspi_prep()]
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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