Re: [PATCH v2 1/3] wlcore/wl12xx: spi: add power operation function

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Hi Grygorii,

On 12/28/2015 01:59 PM, Grygorii Strashko wrote:
On 12/27/2015 07:14 PM, Uri Mashiach wrote:
Hello Grygorii,

On 12/24/2015 06:32 PM, Grygorii Strashko wrote:
On 12/24/2015 05:35 PM, Uri Mashiach wrote:
The power function uses a consumer regulator access to update the WiFi
enable GPIO value.

Signed-off-by: Uri Mashiach <uri.mashiach@xxxxxxxxxxxxxx>
---
v1 -> v2: oops fix was removed to a separate fix.

   drivers/net/wireless/ti/wlcore/spi.c | 37
++++++++++++++++++++++++++++++++++++
   1 file changed, 37 insertions(+)

diff --git a/drivers/net/wireless/ti/wlcore/spi.c
b/drivers/net/wireless/ti/wlcore/spi.c


[...]

+
   static struct wl1271_if_operations spi_ops = {
       .read        = wl12xx_spi_raw_read,
       .write        = wl12xx_spi_raw_write,
       .reset        = wl12xx_spi_reset,
       .init        = wl12xx_spi_init,
+    .power        = wl12xx_spi_set_power,
       .set_block_size = NULL,
   };

@@ -353,6 +384,12 @@ static int wl1271_probe(struct spi_device *spi)
        * comes from the board-peripherals file */
       spi->bits_per_word = 32;

+    glue->reg = devm_regulator_get(&spi->dev, "vwlan");
+    if (IS_ERR(glue->reg)) {

It will be more correct to handle -EPROBE_DEFER here also. Like:
           if (PTR_ERR(glue->reg) == -EPROBE_DEFER)
              return PTR_ERR(glue->reg);


It seems that the IS_ERR(glue->reg) condition covers the EPROBE_DEFER case.

True. But this is not an error and it's common practice do not print
any log messages in this case from driver :)


Sorry, already posted v3.
Will be in v4.


+        dev_err(glue->dev, "can't get regulator\n");
+        return PTR_ERR(glue->reg);
+    }
+
       ret = spi_setup(spi);
       if (ret < 0) {
           dev_err(glue->dev, "spi_setup failed\n");







--
Thanks,
Uri
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