From: Mark A. Greer Date: Wed, 2 Jul 2014 03:28:32 +0000 (-0700) Subject: spi: omap2-mcspi: Configure hardware when slave driver changes mode X-Git-Tag: omap-for-v3.17/fixes-against-rc2~157^2~6^4 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=97ca0d6cc118716840ea443e010cb3d5f2d25eaf;p=pandora-kernel.git spi: omap2-mcspi: Configure hardware when slave driver changes mode Commit id 2bd16e3e23d9df41592c6b257c59b6860a9cc3ea (spi: omap2-mcspi: Do not configure the controller on each transfer unless needed) does its job too well so omap2_mcspi_setup_transfer() isn't called even when an SPI slave driver changes 'spi->mode'. The result is that the mode requested by the SPI slave driver never takes effect. Fix this by adding the 'mode' member to the omap2_mcspi_cs structure which holds the mode value that the hardware is configured for. When the SPI slave driver changes 'spi->mode' it will be different than the value of this new member and the SPI master driver will know that the hardware must be reconfigured (by calling omap2_mcspi_setup_transfer()). Fixes: 2bd16e3e23 (spi: omap2-mcspi: Do not configure the controller on each transfer unless needed) Signed-off-by: Mark A. Greer Signed-off-by: Mark Brown Cc: stable@vger.kernel.org --- Reading git-diff-tree failed