[PATCH 2/2] spi/fsl-lib: Get the SPI controller bus number from DTS

[Hou Zhiqiang <B48286-KZfg59tc24xl57MIdRCFDg@public.gmane.org>]

Get the spi_master's bus_num from DTS to make the spi_master's name
static. So "mtdparts=spi.bus_num.chip_select:..." in cmdline can be
used to asign mtd partions of spi flash.

Signed-off-by: Hou Zhiqiang <B48286-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
---
 drivers/spi/spi-fsl-lib.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/spi/spi-fsl-lib.c b/drivers/spi/spi-fsl-lib.c
index 0b75f26..f5f0307b 100644
--- a/drivers/spi/spi-fsl-lib.c
+++ b/drivers/spi/spi-fsl-lib.c
@@ -198,7 +198,7 @@ int of_mpc8xxx_spi_probe(struct platform_device *ofdev)
 	struct mpc8xxx_spi_probe_info *pinfo;
 	struct fsl_spi_platform_data *pdata;
 	const void *prop;
-	int ret = -ENOMEM;
+	int ret = -ENOMEM, bus_num;
 
 	pinfo = kzalloc(sizeof(*pinfo), GFP_KERNEL);
 	if (!pinfo)
@@ -207,8 +207,12 @@ int of_mpc8xxx_spi_probe(struct platform_device *ofdev)
 	pdata = &pinfo->pdata;
 	dev->platform_data = pdata;
 
-	/* Allocate bus num dynamically. */
-	pdata->bus_num = -1;
+	ret = of_property_read_u32(np, "bus-num", &bus_num);
+	if (ret < 0) {
+		/* Allocate bus num dynamically. */
+		bus_num = -1;
+	}
+	pdata->bus_num = bus_num;
 
 #ifdef CONFIG_FSL_SOC
 	/* SPI controller is either clocked from QE or SoC clock. */
-- 
1.8.5


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