mmc: block: add member in mmc queue struct to hold request data
The way the request data is organized in the mmc queue struct, it only allows processing of one request at a time. This patch adds a new struct to hold mmc queue request data such as sg list, request, blk request and bounce buffers, and updates any functions depending on the mmc queue struct. This prepares for using multiple active requests in one mmc queue. Signed-off-by: NPer Forlin <per.forlin@linaro.org> Acked-by: NKyungmin Park <kyungmin.park@samsung.com> Acked-by: NArnd Bergmann <arnd@arndb.de> Reviewed-by: NVenkatraman S <svenkatr@ti.com> Tested-by: NSourav Poddar <sourav.poddar@ti.com> Tested-by: NLinus Walleij <linus.walleij@linaro.org> Signed-off-by: NChris Ball <cjb@laptop.org>
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