The following commit has been merged into the irq/core branch of tip:

Commit-ID:     e6d46eded43dacf6370a7ae70f927ef4692cfcab
Gitweb:        
https://git.kernel.org/tip/e6d46eded43dacf6370a7ae70f927ef4692cfcab
Author:        Bartosz Golaszewski <bgolaszew...@baylibre.com>
AuthorDate:    Mon, 01 Mar 2021 15:26:59 +01:00
Committer:     Thomas Gleixner <t...@linutronix.de>
CommitterDate: Mon, 29 Mar 2021 15:36:00 +02:00

genirq/irq_sim: Shrink devm_irq_domain_create_sim()

The custom devres structure manages only a single pointer which can
can be achieved by using devm_add_action_or_reset() as well which
makes the code simpler.

Signed-off-by: Bartosz Golaszewski <bgolaszew...@baylibre.com>
Signed-off-by: Thomas Gleixner <t...@linutronix.de>
Link: https://lore.kernel.org/r/20210301142659.8971-1-b...@bgdev.pl

---
 kernel/irq/irq_sim.c | 31 ++++++++++++-------------------
 1 file changed, 12 insertions(+), 19 deletions(-)

diff --git a/kernel/irq/irq_sim.c b/kernel/irq/irq_sim.c
index 4800660..ee40a84 100644
--- a/kernel/irq/irq_sim.c
+++ b/kernel/irq/irq_sim.c
@@ -24,10 +24,6 @@ struct irq_sim_irq_ctx {
        struct irq_sim_work_ctx *work_ctx;
 };
 
-struct irq_sim_devres {
-       struct irq_domain       *domain;
-};
-
 static void irq_sim_irqmask(struct irq_data *data)
 {
        struct irq_sim_irq_ctx *irq_ctx = irq_data_get_irq_chip_data(data);
@@ -216,11 +212,11 @@ void irq_domain_remove_sim(struct irq_domain *domain)
 }
 EXPORT_SYMBOL_GPL(irq_domain_remove_sim);
 
-static void devm_irq_domain_release_sim(struct device *dev, void *res)
+static void devm_irq_domain_remove_sim(void *data)
 {
-       struct irq_sim_devres *this = res;
+       struct irq_domain *domain = data;
 
-       irq_domain_remove_sim(this->domain);
+       irq_domain_remove_sim(domain);
 }
 
 /**
@@ -238,20 +234,17 @@ struct irq_domain *devm_irq_domain_create_sim(struct 
device *dev,
                                              struct fwnode_handle *fwnode,
                                              unsigned int num_irqs)
 {
-       struct irq_sim_devres *dr;
+       struct irq_domain *domain;
+       int ret;
 
-       dr = devres_alloc(devm_irq_domain_release_sim,
-                         sizeof(*dr), GFP_KERNEL);
-       if (!dr)
-               return ERR_PTR(-ENOMEM);
+       domain = irq_domain_create_sim(fwnode, num_irqs);
+       if (IS_ERR(domain))
+               return domain;
 
-       dr->domain = irq_domain_create_sim(fwnode, num_irqs);
-       if (IS_ERR(dr->domain)) {
-               devres_free(dr);
-               return dr->domain;
-       }
+       ret = devm_add_action_or_reset(dev, devm_irq_domain_remove_sim, domain);
+       if (!ret)
+               return ERR_PTR(ret);
 
-       devres_add(dev, dr);
-       return dr->domain;
+       return domain;
 }
 EXPORT_SYMBOL_GPL(devm_irq_domain_create_sim);

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