Re: [PATCH] spi: davinci: Fix compilation warning.

From: Arvind Yadav
Date: Mon Jun 05 2017 - 09:29:34 EST


Hi,
yes, You are right. we are getting this warning.
drivers/spi/spi-davinci.c: In function âdavinci_spi_probeâ:
drivers/spi/spi-davinci.c:919:7: warning: assignment makes integer from pointer without a cast [enabled by default]
ret = spi_davinci_get_pdata(pdev, dspi);

We should return 'int' in both the case.

Thanks
~arvind

On Monday 05 June 2017 06:37 PM, Geert Uytterhoeven wrote:
Hi Arvind,

On Mon, Jun 5, 2017 at 2:14 PM, Arvind Yadav <arvind.yadav.cs@xxxxxxxxx> wrote:
If CONFIG_OF is disable, it'll through compilation warning.

drivers/spi/spi-davinci.c: In function âspi_davinci_get_pdataâ:
drivers/spi/spi-davinci.c:880:2: warning: return makes pointer from integer without a cast [enabled by default]
return -ENODEV;

Signed-off-by: Arvind Yadav <arvind.yadav.cs@xxxxxxxxx>
---
drivers/spi/spi-davinci.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/spi/spi-davinci.c b/drivers/spi/spi-davinci.c
index 2b0805d..93a4009 100644
--- a/drivers/spi/spi-davinci.c
+++ b/drivers/spi/spi-davinci.c
@@ -877,7 +877,7 @@ static int spi_davinci_get_pdata(struct platform_device *pdev,
*spi_davinci_get_pdata(struct platform_device *pdev,
struct davinci_spi *dspi)
{
- return -ENODEV;
+ return ERR_PTR(-ENODEV);
}
#endif
And you don't get a warning for spi_davinci_probe() doing

int ret;

ret = spi_davinci_get_pdata(pdev, dspi);

?

spi_davinci_get_pdata() returns int if CONFIG_OF, else a pointer.
I guess it always should return int instead.

It's been like this since the function was introduced, in commit
aae7147dfc522062 ("spi/davinci: add OF support for the spi controller").

Gr{oetje,eeting}s,

Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds