A couple of sparse warnings.
On Fri, Feb 19, 2016 at 11:15:31PM +0200, Roger Quadros wrote:
> Move NAND specific device tree parsing to NAND driver.
>
> The NAND controller node must have a compatible id, register space
> resource and interrupt resource.
>
> Signed-off-by: Roger Quadros <rogerq@xxxxxx>
> ---
> arch/arm/mach-omap2/gpmc-nand.c | 5 +-
> drivers/memory/omap-gpmc.c | 143 +++++++--------------------
> drivers/mtd/nand/omap2.c | 133 +++++++++++++++++++++----
> include/linux/platform_data/mtd-nand-omap2.h | 3 +-
> 4 files changed, 152 insertions(+), 132 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/gpmc-nand.c b/arch/arm/mach-omap2/gpmc-nand.c
> index 04e6998..f6ac027 100644
> --- a/arch/arm/mach-omap2/gpmc-nand.c
> +++ b/arch/arm/mach-omap2/gpmc-nand.c
[...]
> @@ -2039,9 +1939,42 @@ static int gpmc_probe_generic_child(struct platform_device *pdev,
> goto err;
> }
>
> - ret = of_property_read_u32(child, "bank-width", &gpmc_s.device_width);
> - if (ret < 0)
> - goto err;
> + if (of_node_cmp(child->name, "nand") == 0) {
> + /* NAND specific setup */
> + u32 val;
drivers/memory/omap-gpmc.c:1952:13: originally declared here [sparse]
drivers/memory/omap-gpmc.c:2029:21: warning: symbol 'val' shadows an earlier one [sparse]
> +
> + /* Warn about older DT blobs with no compatible property */
> + if (!of_property_read_bool(child, "compatible")) {
> + dev_warn(&pdev->dev,
> + "Incompatible NAND node: missing compatible");
> + ret = -EINVAL;
> + goto err;
> + }
> +
[...]
> diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c
> index 9e99199..0a637c4 100644
> --- a/drivers/mtd/nand/omap2.c
> +++ b/drivers/mtd/nand/omap2.c
[...]
> +static int omap_get_dt_info(struct device *dev, struct omap_nand_info *info)
> +{
> + struct device_node *child = dev->of_node;
> + int i;
> + const char *s;
> +
> + /* In old bindings, CS num is embedded in reg property */
> + if (of_property_read_u32(child, "reg", &info->gpmc_cs) < 0) {
Sparse doesn't like this one:
drivers/mtd/nand/omap2.c:1660:49: warning: incorrect type in argument 3 (different signedness) [sparse]
drivers/mtd/nand/omap2.c:1660:49: expected unsigned int [usertype] *out_value [sparse]
drivers/mtd/nand/omap2.c:1660:49: got int *<noident> [sparse]
> + dev_err(dev, "reg not found in DT\n");
> + return -EINVAL;
> + }
> +
[...]
Brian
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