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jhovoldKAGA-KOKO
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irqchip: Pass platform device to platform drivers
The IRQCHIP_PLATFORM_DRIVER macros can be used to convert OF irqchip drivers to platform drivers but currently reuse the OF init callback prototype that only takes OF nodes as arguments. This forces drivers to do reverse lookups of their struct devices during probe if they need them for things like dev_printk() and device managed resources. Half of the drivers doing reverse lookups also currently fail to release the additional reference taken during the lookup, while other drivers have had the reference leak plugged in various ways (e.g. using non-intuitive cleanup constructs which still confuse static checkers). Switch to using a probe callback that takes a platform device as its first argument to simplify drivers and plug the remaining (mostly benign) reference leaks. Fixes: 32c6c05 ("irqchip: Add Broadcom BCM2712 MSI-X interrupt controller") Fixes: 70afdab ("irqchip: Add IMX MU MSI controller driver") Fixes: a6199bb ("irqchip: Add Qualcomm MPM controller driver") Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com> Reviewed-by: Changhuang Liang <changhuang.liang@starfivetech.com>
1 parent 3540d99 commit 1e3e330

14 files changed

Lines changed: 78 additions & 109 deletions

drivers/irqchip/irq-bcm2712-mip.c

Lines changed: 3 additions & 7 deletions
Original file line numberDiff line numberDiff line change
@@ -232,16 +232,12 @@ static int mip_parse_dt(struct mip_priv *mip, struct device_node *np)
232232
return ret;
233233
}
234234

235-
static int mip_of_msi_init(struct device_node *node, struct device_node *parent)
235+
static int mip_msi_probe(struct platform_device *pdev, struct device_node *parent)
236236
{
237-
struct platform_device *pdev;
237+
struct device_node *node = pdev->dev.of_node;
238238
struct mip_priv *mip;
239239
int ret;
240240

241-
pdev = of_find_device_by_node(node);
242-
if (!pdev)
243-
return -EPROBE_DEFER;
244-
245241
mip = kzalloc(sizeof(*mip), GFP_KERNEL);
246242
if (!mip)
247243
return -ENOMEM;
@@ -284,7 +280,7 @@ static int mip_of_msi_init(struct device_node *node, struct device_node *parent)
284280
}
285281

286282
IRQCHIP_PLATFORM_DRIVER_BEGIN(mip_msi)
287-
IRQCHIP_MATCH("brcm,bcm2712-mip", mip_of_msi_init)
283+
IRQCHIP_MATCH("brcm,bcm2712-mip", mip_msi_probe)
288284
IRQCHIP_PLATFORM_DRIVER_END(mip_msi)
289285
MODULE_DESCRIPTION("Broadcom BCM2712 MSI-X interrupt controller");
290286
MODULE_AUTHOR("Phil Elwell <phil@raspberrypi.com>");

drivers/irqchip/irq-bcm7038-l1.c

Lines changed: 3 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -394,8 +394,9 @@ static const struct irq_domain_ops bcm7038_l1_domain_ops = {
394394
.map = bcm7038_l1_map,
395395
};
396396

397-
static int bcm7038_l1_of_init(struct device_node *dn, struct device_node *parent)
397+
static int bcm7038_l1_probe(struct platform_device *pdev, struct device_node *parent)
398398
{
399+
struct device_node *dn = pdev->dev.of_node;
399400
struct bcm7038_l1_chip *intc;
400401
int idx, ret;
401402

@@ -453,7 +454,7 @@ static int bcm7038_l1_of_init(struct device_node *dn, struct device_node *parent
453454
}
454455

455456
IRQCHIP_PLATFORM_DRIVER_BEGIN(bcm7038_l1)
456-
IRQCHIP_MATCH("brcm,bcm7038-l1-intc", bcm7038_l1_of_init)
457+
IRQCHIP_MATCH("brcm,bcm7038-l1-intc", bcm7038_l1_probe)
457458
IRQCHIP_PLATFORM_DRIVER_END(bcm7038_l1)
458459
MODULE_DESCRIPTION("Broadcom STB 7038-style L1/L2 interrupt controller");
459460
MODULE_LICENSE("GPL v2");

drivers/irqchip/irq-bcm7120-l2.c

Lines changed: 6 additions & 14 deletions
Original file line numberDiff line numberDiff line change
@@ -206,14 +206,14 @@ static int bcm7120_l2_intc_iomap_3380(struct device_node *dn, struct bcm7120_l2_
206206
return 0;
207207
}
208208

209-
static int bcm7120_l2_intc_probe(struct device_node *dn, struct device_node *parent,
209+
static int bcm7120_l2_intc_probe(struct platform_device *pdev, struct device_node *parent,
210210
int (*iomap_regs_fn)(struct device_node *,
211211
struct bcm7120_l2_intc_data *),
212212
const char *intc_name)
213213
{
214214
unsigned int clr = IRQ_NOREQUEST | IRQ_NOPROBE | IRQ_NOAUTOEN;
215+
struct device_node *dn = pdev->dev.of_node;
215216
struct bcm7120_l2_intc_data *data;
216-
struct platform_device *pdev;
217217
struct irq_chip_generic *gc;
218218
struct irq_chip_type *ct;
219219
int ret = 0;
@@ -224,14 +224,7 @@ static int bcm7120_l2_intc_probe(struct device_node *dn, struct device_node *par
224224
if (!data)
225225
return -ENOMEM;
226226

227-
pdev = of_find_device_by_node(dn);
228-
if (!pdev) {
229-
ret = -ENODEV;
230-
goto out_free_data;
231-
}
232-
233227
data->num_parent_irqs = platform_irq_count(pdev);
234-
put_device(&pdev->dev);
235228
if (data->num_parent_irqs <= 0) {
236229
pr_err("invalid number of parent interrupts\n");
237230
ret = -ENOMEM;
@@ -331,20 +324,19 @@ static int bcm7120_l2_intc_probe(struct device_node *dn, struct device_node *par
331324
if (data->map_base[idx])
332325
iounmap(data->map_base[idx]);
333326
}
334-
out_free_data:
335327
kfree(data);
336328
return ret;
337329
}
338330

339-
static int bcm7120_l2_intc_probe_7120(struct device_node *dn, struct device_node *parent)
331+
static int bcm7120_l2_intc_probe_7120(struct platform_device *pdev, struct device_node *parent)
340332
{
341-
return bcm7120_l2_intc_probe(dn, parent, bcm7120_l2_intc_iomap_7120,
333+
return bcm7120_l2_intc_probe(pdev, parent, bcm7120_l2_intc_iomap_7120,
342334
"BCM7120 L2");
343335
}
344336

345-
static int bcm7120_l2_intc_probe_3380(struct device_node *dn, struct device_node *parent)
337+
static int bcm7120_l2_intc_probe_3380(struct platform_device *pdev, struct device_node *parent)
346338
{
347-
return bcm7120_l2_intc_probe(dn, parent, bcm7120_l2_intc_iomap_3380,
339+
return bcm7120_l2_intc_probe(pdev, parent, bcm7120_l2_intc_iomap_3380,
348340
"BCM3380 L2");
349341
}
350342

drivers/irqchip/irq-brcmstb-l2.c

Lines changed: 11 additions & 10 deletions
Original file line numberDiff line numberDiff line change
@@ -138,11 +138,12 @@ static void brcmstb_l2_intc_resume(struct irq_data *d)
138138
irq_reg_writel(gc, ~b->saved_mask, ct->regs.enable);
139139
}
140140

141-
static int brcmstb_l2_intc_of_init(struct device_node *np, struct device_node *parent,
142-
const struct brcmstb_intc_init_params *init_params)
141+
static int brcmstb_l2_intc_probe(struct platform_device *pdev, struct device_node *parent,
142+
const struct brcmstb_intc_init_params *init_params)
143143
{
144144
unsigned int clr = IRQ_NOREQUEST | IRQ_NOPROBE | IRQ_NOAUTOEN;
145145
unsigned int set = 0;
146+
struct device_node *np = pdev->dev.of_node;
146147
struct brcmstb_l2_intc_data *data;
147148
struct irq_chip_type *ct;
148149
int ret;
@@ -255,21 +256,21 @@ static int brcmstb_l2_intc_of_init(struct device_node *np, struct device_node *p
255256
return ret;
256257
}
257258

258-
static int brcmstb_l2_edge_intc_of_init(struct device_node *np, struct device_node *parent)
259+
static int brcmstb_l2_edge_intc_probe(struct platform_device *pdev, struct device_node *parent)
259260
{
260-
return brcmstb_l2_intc_of_init(np, parent, &l2_edge_intc_init);
261+
return brcmstb_l2_intc_probe(pdev, parent, &l2_edge_intc_init);
261262
}
262263

263-
static int brcmstb_l2_lvl_intc_of_init(struct device_node *np, struct device_node *parent)
264+
static int brcmstb_l2_lvl_intc_probe(struct platform_device *pdev, struct device_node *parent)
264265
{
265-
return brcmstb_l2_intc_of_init(np, parent, &l2_lvl_intc_init);
266+
return brcmstb_l2_intc_probe(pdev, parent, &l2_lvl_intc_init);
266267
}
267268

268269
IRQCHIP_PLATFORM_DRIVER_BEGIN(brcmstb_l2)
269-
IRQCHIP_MATCH("brcm,l2-intc", brcmstb_l2_edge_intc_of_init)
270-
IRQCHIP_MATCH("brcm,hif-spi-l2-intc", brcmstb_l2_edge_intc_of_init)
271-
IRQCHIP_MATCH("brcm,upg-aux-aon-l2-intc", brcmstb_l2_edge_intc_of_init)
272-
IRQCHIP_MATCH("brcm,bcm7271-l2-intc", brcmstb_l2_lvl_intc_of_init)
270+
IRQCHIP_MATCH("brcm,l2-intc", brcmstb_l2_edge_intc_probe)
271+
IRQCHIP_MATCH("brcm,hif-spi-l2-intc", brcmstb_l2_edge_intc_probe)
272+
IRQCHIP_MATCH("brcm,upg-aux-aon-l2-intc", brcmstb_l2_edge_intc_probe)
273+
IRQCHIP_MATCH("brcm,bcm7271-l2-intc", brcmstb_l2_lvl_intc_probe)
273274
IRQCHIP_PLATFORM_DRIVER_END(brcmstb_l2)
274275
MODULE_DESCRIPTION("Broadcom STB generic L2 interrupt controller");
275276
MODULE_LICENSE("GPL v2");

drivers/irqchip/irq-imx-mu-msi.c

Lines changed: 11 additions & 13 deletions
Original file line numberDiff line numberDiff line change
@@ -296,10 +296,9 @@ static const struct imx_mu_dcfg imx_mu_cfg_imx8ulp = {
296296
},
297297
};
298298

299-
static int imx_mu_of_init(struct device_node *dn, struct device_node *parent,
300-
const struct imx_mu_dcfg *cfg)
299+
static int imx_mu_probe(struct platform_device *pdev, struct device_node *parent,
300+
const struct imx_mu_dcfg *cfg)
301301
{
302-
struct platform_device *pdev = of_find_device_by_node(dn);
303302
struct device_link *pd_link_a;
304303
struct device_link *pd_link_b;
305304
struct imx_mu_msi *msi_data;
@@ -415,28 +414,27 @@ static const struct dev_pm_ops imx_mu_pm_ops = {
415414
imx_mu_runtime_resume, NULL)
416415
};
417416

418-
static int imx_mu_imx7ulp_of_init(struct device_node *dn, struct device_node *parent)
417+
static int imx_mu_imx7ulp_probe(struct platform_device *pdev, struct device_node *parent)
419418
{
420-
return imx_mu_of_init(dn, parent, &imx_mu_cfg_imx7ulp);
419+
return imx_mu_probe(pdev, parent, &imx_mu_cfg_imx7ulp);
421420
}
422421

423-
static int imx_mu_imx6sx_of_init(struct device_node *dn, struct device_node *parent)
422+
static int imx_mu_imx6sx_probe(struct platform_device *pdev, struct device_node *parent)
424423
{
425-
return imx_mu_of_init(dn, parent, &imx_mu_cfg_imx6sx);
424+
return imx_mu_probe(pdev, parent, &imx_mu_cfg_imx6sx);
426425
}
427426

428-
static int imx_mu_imx8ulp_of_init(struct device_node *dn, struct device_node *parent)
427+
static int imx_mu_imx8ulp_probe(struct platform_device *pdev, struct device_node *parent)
429428
{
430-
return imx_mu_of_init(dn, parent, &imx_mu_cfg_imx8ulp);
429+
return imx_mu_probe(pdev, parent, &imx_mu_cfg_imx8ulp);
431430
}
432431

433432
IRQCHIP_PLATFORM_DRIVER_BEGIN(imx_mu_msi)
434-
IRQCHIP_MATCH("fsl,imx7ulp-mu-msi", imx_mu_imx7ulp_of_init)
435-
IRQCHIP_MATCH("fsl,imx6sx-mu-msi", imx_mu_imx6sx_of_init)
436-
IRQCHIP_MATCH("fsl,imx8ulp-mu-msi", imx_mu_imx8ulp_of_init)
433+
IRQCHIP_MATCH("fsl,imx7ulp-mu-msi", imx_mu_imx7ulp_probe)
434+
IRQCHIP_MATCH("fsl,imx6sx-mu-msi", imx_mu_imx6sx_probe)
435+
IRQCHIP_MATCH("fsl,imx8ulp-mu-msi", imx_mu_imx8ulp_probe)
437436
IRQCHIP_PLATFORM_DRIVER_END(imx_mu_msi, .pm = &imx_mu_pm_ops)
438437

439-
440438
MODULE_AUTHOR("Frank Li <Frank.Li@nxp.com>");
441439
MODULE_DESCRIPTION("Freescale MU MSI controller driver");
442440
MODULE_LICENSE("GPL");

drivers/irqchip/irq-mchp-eic.c

Lines changed: 3 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -199,8 +199,9 @@ static const struct irq_domain_ops mchp_eic_domain_ops = {
199199
.free = irq_domain_free_irqs_common,
200200
};
201201

202-
static int mchp_eic_init(struct device_node *node, struct device_node *parent)
202+
static int mchp_eic_probe(struct platform_device *pdev, struct device_node *parent)
203203
{
204+
struct device_node *node = pdev->dev.of_node;
204205
struct irq_domain *parent_domain = NULL;
205206
int ret, i;
206207

@@ -273,7 +274,7 @@ static int mchp_eic_init(struct device_node *node, struct device_node *parent)
273274
}
274275

275276
IRQCHIP_PLATFORM_DRIVER_BEGIN(mchp_eic)
276-
IRQCHIP_MATCH("microchip,sama7g5-eic", mchp_eic_init)
277+
IRQCHIP_MATCH("microchip,sama7g5-eic", mchp_eic_probe)
277278
IRQCHIP_PLATFORM_DRIVER_END(mchp_eic)
278279

279280
MODULE_DESCRIPTION("Microchip External Interrupt Controller");

drivers/irqchip/irq-meson-gpio.c

Lines changed: 3 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -572,8 +572,9 @@ static int meson_gpio_irq_parse_dt(struct device_node *node, struct meson_gpio_i
572572
return 0;
573573
}
574574

575-
static int meson_gpio_irq_of_init(struct device_node *node, struct device_node *parent)
575+
static int meson_gpio_irq_probe(struct platform_device *pdev, struct device_node *parent)
576576
{
577+
struct device_node *node = pdev->dev.of_node;
577578
struct irq_domain *domain, *parent_domain;
578579
struct meson_gpio_irq_controller *ctl;
579580
int ret;
@@ -630,7 +631,7 @@ static int meson_gpio_irq_of_init(struct device_node *node, struct device_node *
630631
}
631632

632633
IRQCHIP_PLATFORM_DRIVER_BEGIN(meson_gpio_intc)
633-
IRQCHIP_MATCH("amlogic,meson-gpio-intc", meson_gpio_irq_of_init)
634+
IRQCHIP_MATCH("amlogic,meson-gpio-intc", meson_gpio_irq_probe)
634635
IRQCHIP_PLATFORM_DRIVER_END(meson_gpio_intc)
635636

636637
MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");

drivers/irqchip/irq-qcom-mpm.c

Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -320,9 +320,9 @@ static bool gic_hwirq_is_mapped(struct mpm_gic_map *maps, int cnt, u32 hwirq)
320320
return false;
321321
}
322322

323-
static int qcom_mpm_init(struct device_node *np, struct device_node *parent)
323+
static int qcom_mpm_probe(struct platform_device *pdev, struct device_node *parent)
324324
{
325-
struct platform_device *pdev = of_find_device_by_node(np);
325+
struct device_node *np = pdev->dev.of_node;
326326
struct device *dev = &pdev->dev;
327327
struct irq_domain *parent_domain;
328328
struct generic_pm_domain *genpd;
@@ -478,7 +478,7 @@ static int qcom_mpm_init(struct device_node *np, struct device_node *parent)
478478
}
479479

480480
IRQCHIP_PLATFORM_DRIVER_BEGIN(qcom_mpm)
481-
IRQCHIP_MATCH("qcom,mpm", qcom_mpm_init)
481+
IRQCHIP_MATCH("qcom,mpm", qcom_mpm_probe)
482482
IRQCHIP_PLATFORM_DRIVER_END(qcom_mpm)
483483
MODULE_DESCRIPTION("Qualcomm Technologies, Inc. MSM Power Manager");
484484
MODULE_LICENSE("GPL v2");

drivers/irqchip/irq-renesas-rzg2l.c

Lines changed: 10 additions & 25 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,6 @@
88
*/
99

1010
#include <linux/bitfield.h>
11-
#include <linux/cleanup.h>
1211
#include <linux/clk.h>
1312
#include <linux/err.h>
1413
#include <linux/io.h>
@@ -528,18 +527,15 @@ static int rzg2l_irqc_parse_interrupts(struct rzg2l_irqc_priv *priv,
528527
return 0;
529528
}
530529

531-
static int rzg2l_irqc_common_init(struct device_node *node, struct device_node *parent,
532-
const struct irq_chip *irq_chip)
530+
static int rzg2l_irqc_common_probe(struct platform_device *pdev, struct device_node *parent,
531+
const struct irq_chip *irq_chip)
533532
{
534-
struct platform_device *pdev = of_find_device_by_node(node);
535-
struct device *dev __free(put_device) = pdev ? &pdev->dev : NULL;
536533
struct irq_domain *irq_domain, *parent_domain;
534+
struct device_node *node = pdev->dev.of_node;
535+
struct device *dev = &pdev->dev;
537536
struct reset_control *resetn;
538537
int ret;
539538

540-
if (!pdev)
541-
return -ENODEV;
542-
543539
parent_domain = irq_find_host(parent);
544540
if (!parent_domain)
545541
return dev_err_probe(dev, -ENODEV, "cannot find parent domain\n");
@@ -583,33 +579,22 @@ static int rzg2l_irqc_common_init(struct device_node *node, struct device_node *
583579

584580
register_syscore_ops(&rzg2l_irqc_syscore_ops);
585581

586-
/*
587-
* Prevent the cleanup function from invoking put_device by assigning
588-
* NULL to dev.
589-
*
590-
* make coccicheck will complain about missing put_device calls, but
591-
* those are false positives, as dev will be automatically "put" via
592-
* __free_put_device on the failing path.
593-
* On the successful path we don't actually want to "put" dev.
594-
*/
595-
dev = NULL;
596-
597582
return 0;
598583
}
599584

600-
static int rzg2l_irqc_init(struct device_node *node, struct device_node *parent)
585+
static int rzg2l_irqc_probe(struct platform_device *pdev, struct device_node *parent)
601586
{
602-
return rzg2l_irqc_common_init(node, parent, &rzg2l_irqc_chip);
587+
return rzg2l_irqc_common_probe(pdev, parent, &rzg2l_irqc_chip);
603588
}
604589

605-
static int rzfive_irqc_init(struct device_node *node, struct device_node *parent)
590+
static int rzfive_irqc_probe(struct platform_device *pdev, struct device_node *parent)
606591
{
607-
return rzg2l_irqc_common_init(node, parent, &rzfive_irqc_chip);
592+
return rzg2l_irqc_common_probe(pdev, parent, &rzfive_irqc_chip);
608593
}
609594

610595
IRQCHIP_PLATFORM_DRIVER_BEGIN(rzg2l_irqc)
611-
IRQCHIP_MATCH("renesas,rzg2l-irqc", rzg2l_irqc_init)
612-
IRQCHIP_MATCH("renesas,r9a07g043f-irqc", rzfive_irqc_init)
596+
IRQCHIP_MATCH("renesas,rzg2l-irqc", rzg2l_irqc_probe)
597+
IRQCHIP_MATCH("renesas,r9a07g043f-irqc", rzfive_irqc_probe)
613598
IRQCHIP_PLATFORM_DRIVER_END(rzg2l_irqc)
614599
MODULE_AUTHOR("Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>");
615600
MODULE_DESCRIPTION("Renesas RZ/G2L IRQC Driver");

drivers/irqchip/irq-renesas-rzv2h.c

Lines changed: 9 additions & 23 deletions
Original file line numberDiff line numberDiff line change
@@ -490,29 +490,15 @@ static int rzv2h_icu_parse_interrupts(struct rzv2h_icu_priv *priv, struct device
490490
return 0;
491491
}
492492

493-
static void rzv2h_icu_put_device(void *data)
494-
{
495-
put_device(data);
496-
}
497-
498-
static int rzv2h_icu_init_common(struct device_node *node, struct device_node *parent,
499-
const struct rzv2h_hw_info *hw_info)
493+
static int rzv2h_icu_probe_common(struct platform_device *pdev, struct device_node *parent,
494+
const struct rzv2h_hw_info *hw_info)
500495
{
501496
struct irq_domain *irq_domain, *parent_domain;
497+
struct device_node *node = pdev->dev.of_node;
502498
struct rzv2h_icu_priv *rzv2h_icu_data;
503-
struct platform_device *pdev;
504499
struct reset_control *resetn;
505500
int ret;
506501

507-
pdev = of_find_device_by_node(node);
508-
if (!pdev)
509-
return -ENODEV;
510-
511-
ret = devm_add_action_or_reset(&pdev->dev, rzv2h_icu_put_device,
512-
&pdev->dev);
513-
if (ret < 0)
514-
return ret;
515-
516502
parent_domain = irq_find_host(parent);
517503
if (!parent_domain) {
518504
dev_err(&pdev->dev, "cannot find parent domain\n");
@@ -618,19 +604,19 @@ static const struct rzv2h_hw_info rzv2h_hw_params = {
618604
.field_width = 8,
619605
};
620606

621-
static int rzg3e_icu_init(struct device_node *node, struct device_node *parent)
607+
static int rzg3e_icu_probe(struct platform_device *pdev, struct device_node *parent)
622608
{
623-
return rzv2h_icu_init_common(node, parent, &rzg3e_hw_params);
609+
return rzv2h_icu_probe_common(pdev, parent, &rzg3e_hw_params);
624610
}
625611

626-
static int rzv2h_icu_init(struct device_node *node, struct device_node *parent)
612+
static int rzv2h_icu_probe(struct platform_device *pdev, struct device_node *parent)
627613
{
628-
return rzv2h_icu_init_common(node, parent, &rzv2h_hw_params);
614+
return rzv2h_icu_probe_common(pdev, parent, &rzv2h_hw_params);
629615
}
630616

631617
IRQCHIP_PLATFORM_DRIVER_BEGIN(rzv2h_icu)
632-
IRQCHIP_MATCH("renesas,r9a09g047-icu", rzg3e_icu_init)
633-
IRQCHIP_MATCH("renesas,r9a09g057-icu", rzv2h_icu_init)
618+
IRQCHIP_MATCH("renesas,r9a09g047-icu", rzg3e_icu_probe)
619+
IRQCHIP_MATCH("renesas,r9a09g057-icu", rzv2h_icu_probe)
634620
IRQCHIP_PLATFORM_DRIVER_END(rzv2h_icu)
635621
MODULE_AUTHOR("Fabrizio Castro <fabrizio.castro.jz@renesas.com>");
636622
MODULE_DESCRIPTION("Renesas RZ/V2H(P) ICU Driver");

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