[PATCH -mm] spi: fix compile error

[Fernando Luis Vázquez Cao]

Fix compile error below:

     LD      drivers/spi/built-in.o
     CC [M]  drivers/spi/spi_gpio.o
   In file included from drivers/spi/spi_gpio.c:26:
   include/linux/spi/spi_bitbang.h:23: error: field âworkâ has incomplete type
   make[2]: *** [drivers/spi/spi_gpio.o] Error 1
   make[1]: *** [drivers/spi] Error 2
   make: *** [drivers] Error 2

Signed-off-by: Fernando Luis Vazquez Cao <fernando@xxxxxxxxxxxxx>
---

diff -urNp linux-2.6.28-rc2-mm1-orig/include/linux/spi/spi_bitbang.h linux-2.6.28-rc2-mm1/include/linux/spi/spi_bitbang.h
--- linux-2.6.28-rc2-mm1-orig/include/linux/spi/spi_bitbang.h	2008-10-10 07:13:53.000000000 +0900
+++ linux-2.6.28-rc2-mm1/include/linux/spi/spi_bitbang.h	2008-10-29 16:25:31.000000000 +0900
@@ -18,6 +18,9 @@
  *	duplex (MicroWire) controllers.  Provide chipslect() and txrx_bufs(),
  *	and custom setup()/cleanup() methods.
  */
+
+#include <linux/workqueue.h>
+
 struct spi_bitbang {
 	struct workqueue_struct	*workqueue;
 	struct work_struct	work;


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