Title: [6448] trunk/drivers/spi/spi_bfin5xx.c: [#5144] fix by Wolfgang Muees to make sure SPI controller is in a sane state in case the boot loader left it in a crappy state
- Revision
- 6448
- Author
- vapier
- Date
- 2009-05-21 20:11:02 -0500 (Thu, 21 May 2009)
Log Message
[#5144] fix by Wolfgang Muees to make sure SPI controller is in a sane state in case the boot loader left it in a crappy state
Modified Paths
Diff
Modified: trunk/drivers/spi/spi_bfin5xx.c (6447 => 6448)
--- trunk/drivers/spi/spi_bfin5xx.c 2009-05-21 13:27:40 UTC (rev 6447)
+++ trunk/drivers/spi/spi_bfin5xx.c 2009-05-22 01:11:02 UTC (rev 6448)
@@ -1426,6 +1426,12 @@
goto out_error_queue_alloc;
}
+ /* Reset SPI registers. If these registers were used by the boot loader,
+ * the sky may fall on your head if you enable the dma controller.
+ */
+ write_CTRL(drv_data, 0x0400);
+ write_FLAG(drv_data, 0xFF00);
+
/* Register with the SPI framework */
platform_set_drvdata(pdev, drv_data);
status = spi_register_master(master);
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