On Wednesday 02 May 2018 02:13 PM, Johan Hovold wrote:
On Sat, Apr 28, 2018 at 10:05:39AM +0530, Arvind Yadav wrote:
Replace the manual validity checks for the GPIO with the gpio_is_valid().
Signed-off-by: Arvind Yadav arvind.yadav.cs@gmail.com
chnage in v2 : Returning invalid gpio as error instead of -ENODEV.
drivers/staging/greybus/arche-platform.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/staging/greybus/arche-platform.c b/drivers/staging/greybus/arche-platform.c index 83254a7..c3a7da5 100644 --- a/drivers/staging/greybus/arche-platform.c +++ b/drivers/staging/greybus/arche-platform.c @@ -448,7 +448,7 @@ static int arche_platform_probe(struct platform_device *pdev) arche_pdata->svc_reset_gpio = of_get_named_gpio(np, "svc,reset-gpio", 0);
- if (arche_pdata->svc_reset_gpio < 0) {
- if (!gpio_is_valid(arche_pdata->svc_reset_gpio)) { dev_err(dev, "failed to get reset-gpio\n"); return arche_pdata->svc_reset_gpio;
I'm sorry, but I don't this change is desirable. of_get_named_gpio() returns a valid gpio number or a negative errno, so there's no need to use the legacy gpio_is_valid() helper here.
If you grep for of_get_named_gpio() you'll find that some drivers indeed use that helper this way, but they are in a clear minority.
And ultimately, we want to move to using gpio descriptors anyway.
We need to check gpio validity. If we are using of_get_named_gpio() or not. of_get_name_gpio() will read a device node and fetch the value. But it'll not check that gpio is valid or not valid.
} @@ -468,7 +468,7 @@ static int arche_platform_probe(struct platform_device *pdev) arche_pdata->svc_sysboot_gpio = of_get_named_gpio(np, "svc,sysboot-gpio", 0);
- if (arche_pdata->svc_sysboot_gpio < 0) {
- if (!gpio_is_valid(arche_pdata->svc_sysboot_gpio)) { dev_err(dev, "failed to get sysboot gpio\n"); return arche_pdata->svc_sysboot_gpio; }
@@ -487,7 +487,7 @@ static int arche_platform_probe(struct platform_device *pdev) arche_pdata->svc_refclk_req = of_get_named_gpio(np, "svc,refclk-req-gpio", 0);
- if (arche_pdata->svc_refclk_req < 0) {
- if (!gpio_is_valid(arche_pdata->svc_refclk_req)) { dev_err(dev, "failed to get svc clock-req gpio\n"); return arche_pdata->svc_refclk_req; }
But if this were to be changed, you'd need to update also the fourth call to of_get_named_gpio() in this function.
Sorry, I missed it. Thanks for point out. I will add check for this.
~arvind
Thanks, Johan