diff options
| author | Hou Zhiqiang <B48286@freescale.com> | 2014-03-21 06:59:08 (GMT) |
|---|---|---|
| committer | Jose Rivera <German.Rivera@freescale.com> | 2014-03-21 14:07:44 (GMT) |
| commit | a522f951f4dbc2584a1bc3bcdd2944f2b0db2283 (patch) | |
| tree | fca054aacc499ecd4e64a27522a353518640950b /drivers/mtd | |
| parent | ad9b34062e5234df48ad1774543518268b2b929f (diff) | |
| download | linux-fsl-qoriq-a522f951f4dbc2584a1bc3bcdd2944f2b0db2283.tar.xz | |
mtd: m25p80: Modify the name of mtd_info
To specify spi flash layouts by "mtdparts=..." in cmdline, we must
give mtd_info a fixed name,because the cmdlinepart's parser will
match the name of mtd_info given in cmdline.
Now, if use DT, the mtd_info's name will be spi->dev->name. It
consists of spi_master->bus_num, and the spi_master->bus_num maybe
dynamically fetched. So, in this case, replace the component bus_num
with thei physical address of spi master.
Signed-off-by: Hou Zhiqiang <B48286@freescale.com>
Change-Id: I36a6105a43ea408507576a98642cf80c2b2837e4
Reviewed-on: http://git.am.freescale.net:8181/10040
Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com>
Reviewed-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Reviewed-by: Jose Rivera <German.Rivera@freescale.com>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/devices/m25p80.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c index 7eda71d..f5d7a0c 100644 --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c @@ -30,6 +30,7 @@ #include <linux/mtd/cfi.h> #include <linux/mtd/mtd.h> #include <linux/mtd/partitions.h> +#include <linux/of_address.h> #include <linux/of_platform.h> #include <linux/spi/spi.h> @@ -934,9 +935,11 @@ static int m25p_probe(struct spi_device *spi) struct flash_platform_data *data; struct m25p *flash; struct flash_info *info; - unsigned i; + unsigned i, ret; struct mtd_part_parser_data ppdata; struct device_node *np = spi->dev.of_node; + struct resource res; + struct device_node *mnp = spi->master->dev.of_node; /* Platform data helps sort out which chip type we have, as * well as how this board partitions it. If we don't have @@ -1009,8 +1012,17 @@ static int m25p_probe(struct spi_device *spi) if (data && data->name) flash->mtd.name = data->name; - else - flash->mtd.name = dev_name(&spi->dev); + else { + ret = of_address_to_resource(mnp, 0, &res); + if (ret) { + dev_err(&spi->dev, "failed to get spi master resource\n"); + return ret; + } + flash->mtd.name = kasprintf(GFP_KERNEL, "spi%x.%d", + (unsigned)res.start, spi->chip_select); + if (!flash->mtd.name) + return -ENOMEM; + } flash->mtd.type = MTD_NORFLASH; flash->mtd.writesize = 1; |