On Thu, Jul 08, 2010 at 06:09:27PM +0100, Alan Cox wrote:
> + else if (offset < 14)/* it is GPOSW */
> + rc = intel_scu_ipc_update_register(GPOSWCTL0 + offset - 8,
> + GPOSW_DRV | GPOSW_DOU | GPOSW_RDRV,
> + GPOSW_DRV | (value ? GPOSW_DOU : 0));
> + else if (offset > 15 && offset < 24)/* it is GPO */
What happened to gpios 14 and 15?
> +
> +static int pmic_gpio_get(struct gpio_chip *chip, unsigned offset)
> +{
> + u8 r;
> +
> + /* we only have 8 GPIO pins we can use as input */
> + if (offset > 8)
> + return -1;
Is there any chance of this getting passed up to userspace? Using
something more descriptive would be nice (ditto for a couple of other
places)
> + if (intel_scu_ipc_ioread8(GPIO0 + offset, &r))
> + return -1;
...especially since you get the same error for two different failure
modes :)
> +static int pmic_irq_type(unsigned irq, unsigned type)
> +{
> + struct pmic_gpio *pg = get_irq_chip_data(irq);
> + u32 gpio = irq - pg->irq_base;
> + unsigned long flags;
> +
> + if (gpio < 0 || gpio > pg->chip.ngpio)
It's unsigned, don't need to check that it's < 0.
> +static int __devinit platform_pmic_gpio_probe(struct platform_device *pdev)
> +{
> + struct device *dev = &pdev->dev;
> + int irq = platform_get_irq(pdev, 0);
> + struct intel_pmic_gpio_platform_data *pdata = dev->platform_data;
I don't think it's really necessary to indicate that the driver's loaded
here.
> + if (!pdata || !pdata->gpio_base || !pdata->irq_base) {
> + dev_dbg(dev, "incorrect or missing platform data\n");
> + return -EINVAL;
> + }
Shouldn't there be an is_mrst() check before trying to dereference this?
--
Matthew Garrett | mjg59@xxxxxxxxxxxxx
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