Re: [PATCH v3 1/3] irqchip: Pass platform_device pointer to init_cb

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On 2021-12-02 17:52, Florian Fainelli wrote:
On 12/2/21 4:21 AM, Shawn Guo wrote:
It makes sense to just pass device_node for callback in IRQCHIP_DECLARE
case, but not so much for IRQCHIP_PLATFORM_DRIVER one, because
platform_driver probe/init usually needs device pointer for various
purposes, e.g. resource allocation, service request, device prefixed
message output, etc. Create a new callback type irqchip_init_cb_t which
takes platform_device pointer as parameter, and update the existing
IRQCHIP_PLATFORM_DRIVER users accordingly.

Cc: Florian Fainelli <f.fainelli@xxxxxxxxx>
Cc: Claudiu Beznea <claudiu.beznea@xxxxxxxxxxxxx>
Cc: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
Signed-off-by: Shawn Guo <shawn.guo@xxxxxxxxxx>

Could you copy all recipients on all 3 patches plus your cover letter
next time so we have the full context? Thanks!

[snip]


-static int __init bcm7120_l2_intc_probe_7120(struct device_node *dn,
+static int __init bcm7120_l2_intc_probe_7120(struct platform_device *pdev,
 					     struct device_node *parent)
 {
-	return bcm7120_l2_intc_probe(dn, parent, bcm7120_l2_intc_iomap_7120,
+	return bcm7120_l2_intc_probe(pdev->dev.of_node, parent,
+				     bcm7120_l2_intc_iomap_7120,
 				     "BCM7120 L2");

If you look further into that driver, you will see that we do something
like this in bcm7120_l2_intc_probe:

          pdev = of_find_device_by_node(dn);
          if (!pdev) {
                  ret = -ENODEV;
                  goto out_free_data;
          }

which would be completely superfluous now that we pass a platform_device
directly. Can you rework your patch so as to eliminate that
of_find_device_by_ndoe() (and the companion put_device call)?

Or just adopt the same construct in the MPM driver. At this stage, drivers
requiring a platform_device are the minority.

        M.
--
Jazz is not dead. It just smells funny...



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